A method to manufacture a steel product in a steelmaking plant including several different tools, the method including the definition of at least two manufacturing routes using different tools and the calculation of the expected level of CO2 emissions associated to each of this defined manufacturing routes.
A method to manufacture a global tonnage of steel products in at least two steelmaking units wherein expected level emissions are calculated and compared with pre-defined targets.
A device for determining the chemical composition of a liquid metallurgical product emitting electromagnetic radiations. The device including a collection probe configured to acquire the electromagnetic radiations emitted by the metallurgical product in a predetermined wavelength range Δλ, a spectroscopic device connected to the collection probe and configured to generate a spectral signal of the acquired electromagnetic radiations and processing means including a database of reference radiances. A method using the device is also provided.
G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement
A method of manufacturing a steel product into at least two different steelmaking units wherein an expected level of CO2 emissions for the manufacturing of said product in each respective steelmaking unit is calculated.
A method for estimating the temperature of a steel product including a calibration step wherein the intensities at 5 wavelengths ranging from 0.9 to 2.1 μm are recorded for several measurement condition and spectral attenuation coefficients are computed, a measurement step wherein the intensities at said 5 wavelengths are recorded and spectral attenuation coefficients are computed for several temperatures and a comparison step wherein a probability test is performed to estimate the steel product temperature.
G01J 5/00 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique
G01J 5/10 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique en utilisant des détecteurs électriques de radiations
G01J 5/52 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique en utilisant la comparaison avec des sources de référence, p.ex. pyromètres à disparition de filament
G01J 5/80 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique Étalonnage
6.
Hot-Formed Previously Welded Steel Part with very High Mechanical Resistance and Production Method
A welded steel part with a very high mechanical strength is provided. The welded steel part is obtained by heating followed by hot forming, then cooling of at least one welded blank obtained by butt welding of at least one first and one second sheet. The at least one first and second sheets including, at least in part, a steel substrate and a pre-coating which includes an intermetallic alloy layer in contact with the steel substrate, topped by a metal alloy layer of aluminum or aluminum-based alloy. A method for the fabrication of a welded steel part and the fabrication of structural or safety parts for automotive vehicles are also provided.
B23K 31/02 - Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux relatifs au brasage ou au soudage
B23K 26/32 - Assemblage tenant compte des propriétés du matériau concerné
B23K 35/02 - Baguettes, électrodes, matériaux ou environnements utilisés pour le brasage, le soudage ou le découpage caractérisés par des propriétés mécaniques, p.ex. par la forme
B23K 35/30 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 1550 C
B23K 35/38 - Emploi d'environnements spécifiés, p.ex. d'atmosphères particulières entourant la zone de travail
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 1/673 - Dispositifs pour trempe pour la trempe en coquille
C21D 9/48 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles tôles embouties
C21D 9/50 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour joints de soudure
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
A method of forming a hot stamped coated steel product includes providing a precoated steel strip, the precoated steel strip including a base steel having a first side and a second side, and a precoating on at least one of the first side and the second side, the precoating being made of aluminum or an aluminum alloy; heating the precoated steel strip in a furnace, wherein the precoated strip experiences a temperature rise at a heating rate (Vc) between 4° and 12° C./s, wherein Vc is a mean heating rate between 20 and 700 C; removing the heated precoated steel strip from the furnace; and then hot stamping the precoated strip to deform the precoated steel strip into a hot stamped coated steel product, the hot stamped coated steel product having a coating including, proceeding from the base steel outwards: (a) an interdiffusion layer, (b) an intermediate layer, (c) an intermetallic layer, and (d) a superficial layer.
A galvannealed steel sheet ontainabel by a method including the provision of a specific steel sheet, a recrystallization annealing with specific heating, soaking and cooling sub-steps using an inert gas, a hot-dip galvanizing and an alloying treatment.
C22C 38/14 - Alliages ferreux, p.ex. aciers alliés contenant du titane ou du zirconium
C22C 38/38 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/42 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/44 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/54 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du bore
C22C 38/58 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C23C 2/00 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergé; Appareils à cet effet
C23C 2/02 - Pré-traitement du matériau à revêtir, p.ex. pour le revêtement de parties déterminées de la surface
C23C 2/04 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergé; Appareils à cet effet caractérisé par le matériau de revêtement
A coated steel sheet and press hardened steel part having a composition including, by weight percent: C 0.26-0.40%, Mn 0.5-1.8%, Si 0.1-1.25%, Al 0.01-0.1%, Cr 0.1-1.0%, Ti 0.01-0.1%, B 0.001-0.004%, P 0.020%, S 0.010%, N 0.010% the remainder of the composition being iron and unavoidable impurities resulting from the smelting. The press hardened steel part includes a bulk having a microstructure including, in surface fraction, more than 95% of martensite and less than 5% of bainite, a coating layer at the surface of the steel part, a ferritic interdiffusion layer between the coating layer and the bulk, and a ratio between the ferritic grain width in the interdiffusion layer GWint over prior austenite grain size in the bulk PAGSbulk, satisfying following equation (GWint/PAGSbulk)−1≥30%.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
A method of production of a coated steel substrate including of the steps to have a steel substrate; performing electroplating of the steel substrate with an electroplating solution having a pH of from 2 to 6 and containing 100 g/l to 500 g/l of NiSO4 and 1 g/l to 15 g/l of MoS2, by applying a current density from 15 A/dm2 to 45 A/dm2 during 30 seconds to 300 seconds to generate a layer of Ni—MoS2 coating; thereafter, rinsing the steel substrate and drying it to obtain a coated steel substrate.
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
The invention relates to a steel substrate coated on at least one of its faces with a metallic coating based on zinc or its alloys wherein the metallic coating is itself coated with a conversion layer comprising:
zincsulphate hydrate,
aluminium in an amount up to 14 mg·m−2,
wherein the conversion layer comprises neither zinc hydroxysulphate, nor free water molecules nor any compounds having free hydroxyl groups, the surface density of sulphur in the conversion layer being greater than or equal to 5.0 mg/m2. The invention also relates to the corresponding treatment method.
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
13.
Antiviral formulation, antiviral filtering material, methods of preparation thereof and antiviral face mask
A first subject of the present invention has an antiviral formulation with metallic copper particles in an unoxidized form and having a median particle diameter inferior or equal to 200 nm, graphene oxide or reduced graphene oxide, and a bonding matrix material. A second subject of the invention has an antiviral filtering material with a layer of textile and at least one layer of an antiviral coating comprising metallic copper particles in an unoxidized form and having a median particle diameter inferior or equal to 200 nm, graphene oxide or reduced graphene oxide, and a bonding matrix into which both metallic copper particles and graphene oxide or reduced graphene oxide are anchored. The invention also concerns methods of preparation of the antiviral formulation and of the antiviral filtering material. Finally, the invention includes an antiviral face mask with a layer of textile coated with the antiviral formulation.
A01P 1/00 - Désinfectants; Composés antimicrobiens ou leurs mélanges
A41D 31/30 - Matériaux spécialement adaptés aux vêtements de dessus caractérisés par une fonction ou une utilisation particulières antimicrobiens, p.ex. antibactériens
A62B 23/02 - Filtres en vue de la protection des voies respiratoires pour appareils respiratoires
B22F 1/103 - Poudres métalliques contenant des agents lubrifiants ou liants; Poudres métalliques contenant des matières organiques contenant un liant organique comprenant un mélange de, ou obtenu par réaction de, plusieurs composants autres que les solvants ou les agents lubrifiants
B22F 1/16 - Particules métalliques revêtues d'un non-métal
D06M 11/74 - Traitement des fibres, fils, filés, tissus ou des articles fibreux faits de ces matières, avec des substances inorganiques ou leurs complexes; Un tel traitement combiné avec un traitement mécanique, p.ex. mercerisage avec du carbone ou ses composés avec des acides graphitiques ou leurs sels
D06M 11/83 - Traitement des fibres, fils, filés, tissus ou des articles fibreux faits de ces matières, avec des substances inorganiques ou leurs complexes; Un tel traitement combiné avec un traitement mécanique, p.ex. mercerisage avec des composés libérant des métaux, p.ex. des métaux-carbonyles; Réduction de composés métalliques sur des textiles
D06M 15/263 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone d'acides carboxyliques non saturés; Leurs sels ou esters
D06M 15/564 - Polyurées, polyuréthanes ou autres polymères comportant des liaisons uréide ou uréthane; Leurs précurseurs précondensés
D06M 16/00 - Traitement biochimique des fibres, fils, filés, tissus ou articles fibreux faits de ces matières, p.ex. enzymatique
14.
HOT ROLLING MILL WITH SEPARATOR FOR MILL SCALE FROM WASTEWATER
A method for collecting mill scale from a hot rolling mill is provided. The hot rolling mill includes a flume. The method includes transporting mill scale particles in wastewater, retrieving the wastewater from a flume of the hot rolling mill and separating the mill scale particles from the wastewater using a separator. A hot rolling mill and a method for retrofitting a hot rolling mill are also provided.
B01D 21/26 - Séparation du sédiment avec emploi de la force centrifuge
B01D 21/00 - Séparation par sédimentation de particules solides en suspension dans des liquides
B01D 21/24 - Mécanismes d'alimentation ou d'évacuation pour bacs de décantation
B21B 1/26 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilés; Séquence des opérations dans les trains de laminoirs; Installation d'une usine de laminage, p.ex. groupement de cages; Succession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies selon un processus continu par laminage à chaud
C02F 1/00 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout
C02F 1/38 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par séparation centrifuge
A tin coated steel sheet is provided for manufacturing a drawn can having: a thickness inferior to 0.7 mm, a yield strength inferior to 400 MPa, an average grain aspect ratio below 1.5, a strain hardening coefficient below 1.5, a tin coating from 0.5 to 4.0 g·m−2 on a first face and from 2.8 to 11.2 g·m−2 on a second face, a chemical composition comprising in weight percent 0.002≤C≤0.09 and 0.0015≤B≤0.005 and a balance of Fe and unavoidable impurities, and the steel sheet having a ferritic microstructure with a mean grain size from 5 to 15 μm.
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
A low density cold rolled and annealed steel sheet having 0.12%≤carbon≤0.25%, 3%≤manganese≤10%, 3.5%≤aluminum≤6.5%, 0%≤phosphorus≤0.1%, 0%≤sulfur≤0.03%, 0%≤nitrogen≤0.1%, 0%≤silicon≤2%, 0.01%≤niobium≤0.03%, 0.01%≤titanium≤0.2%, 0%≤molybdenum≤0.5%, 0%≤chromium≤0.6%, 0.01%≤copper≤2.0%, 0.01%≤nickel≤3.0%, 0%≤calcium≤0.005%, 0%≤boron≤0.01%, 0%≤Magnesium≤0.005%, 0%≤Zirconium≤0.005%, 0%≤Cerium≤0.1%, and the balance including iron, the steel sheet having a microstructure comprising 60% to 90% Delta ferrite, 8% to 30% of residual austenite having average grain size between 0.6 and 2 microns, 1.0% to 10% of alpha-ferrite having average grain size between 0.6 and 2 microns and 0% to 2% of kappa precipitates (Fe,Mn)3AlCx, where x is strictly lower than 1.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/00 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique
17.
METHODS FOR PREPARATION OF SHEETS TO BE USED FOR FABRICATION OF A WELDED STEEL BLANK AND FABRICATING A WELDED BLANK
A method for the preparation of steel sheets for fabricating a welded steel blank is provided. The method includes a step of removing at least part of the first and second metal alloy layers in first and second peripheral zones of pre-coated steel first and second sheets, respectively, by simultaneously ablating the first and second precoatings in the first and second peripheral zones of the pre-coated steel first and second sheets to define first and second ablation zones, the first and second peripheral zones being zones of the first and second principal faces closest to the median plane and located on either side of the median plane.
B23K 26/26 - Soudage de joints continus rectilignes
B23K 26/322 - Assemblage tenant compte des propriétés du matériau concerné faisant intervenir des parties métalliques
B23K 26/348 - Travail par rayon laser, p.ex. soudage, découpage ou perçage en combinaison avec du soudage ou du découpage couvert par les groupes , p.ex. en combinaison avec le soudage par résistance en combinaison avec du soudage à l'arc, p.ex. en atmosphère inerte avec électrode tungstène [TIG], en atmosphère inerte avec électrode métal [MIG] ou du soudage plasma
B23K 9/173 - Soudage ou découpage à l'arc utilisant des gaz de protection et une électrode consommable
B23K 26/211 - Assemblage par soudage avec interposition de matériau particulier pour faciliter la connexion des parties
B23K 9/167 - Soudage ou découpage à l'arc utilisant des gaz de protection et une électrode non consommable
B23K 26/40 - Enlèvement de matière en tenant compte des propriétés du matériau à enlever
B23K 26/361 - Enlèvement de matière pour l'ébarbage ou l'ébavurage mécanique
B23K 28/02 - Procédés ou appareils combinés pour le soudage ou le découpage
B23K 26/32 - Assemblage tenant compte des propriétés du matériau concerné
18.
COLD ROLLED AND HEAT TREATED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF
A cold rolled and heat treated steel sheet having a composition including the following elements: 0.1%≤Carbon≤0.5%, 1%≤Maganeses≤3.4%, 0.5%≤Silicon≤2.5%, 0.01%≤Aluminum≤1.5%, 0.05%≤Chromium≤1%, 0.001%≤Niobium≤0.1%, 0%≤Sulfur≤0.003%, 0.002%≤Phosphorus≤0.02%, 0%≤Nitrogen≤0.01%, 0%≤Molybdenum≤0.5%, 0.001%≤Titanium≤0.1%, 0.01%≤Coppers≤2%, 0.01%≤Nickel≤3%, 0.0001%≤Calcium≤0.005%, 0%≤Vanadium≤0.1%, 0%≤Boron≤0.003%, 0%≤Ceriurm≤0.1%, 0%≤Magnesium≤0.010%, 0%≤Zirconium≤0.010% the remainder composition being composed of iron and the unavoidable impurities, and a microstructure of the rolled steel sheet includes by area fraction, 10% to 60% Bainite, 5% to 50% Ferrite, 5% to 25% Residual Austenite, Martensite 2% to 20%, Tempered Martensite 0% to 25%, the balance being Annealed Martensite, which content shall be from 1% to 45%.
C22C 38/26 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du niobium ou du tantale
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
19.
Process for Manufacturing a Press Hardened Laser Welded Steel Part
A process for manufacturing a press hardened laser welded steel part, includes providing at least one first steel sheet with a composition containing, by weight 0.062≤C≤0.095%, the at least one first steel sheet precoated with a metallic precoating of aluminum, or aluminum-based alloy, or aluminum alloy.
providing at least one second steel sheet with a composition containing, by weight, from to 0.38% of carbon, the at least one second steel sheet precoated with a metallic precoating of aluminum, or aluminum-based alloy, or aluminum alloy;
removing a portion of a thickness of the aluminum precoating at upper and lower sides along one side of a periphery of the at least one first steel sheet and the at least one second steel sheet;
creating a welded blank by laser welding the at least one first steel sheet and the at least one second steel sheet, such that an aluminum content in a weld metal is lower than 0.3% by weight, the laser welding being performed along the periphery wherein the portion of the thickness of the aluminum precoating has been removed;
heating the welded blank and holding the welded blank at a temperature Tm between 890 and 950° C., a holding duration Dm at the temperature being between 1 and 10 minutes, so as to obtain a heated welded blank;
transferring the heated welded blank within a forming press, the transfer duration Dt being less than 10 s;
hot forming the heated welded blank in the forming press so as to obtain a welded formed part; and
cooling the welded formed part at a first cooling rate CR1 between 40 and 360° C./s in a temperature range between 750 and 450° C., and at a second cooling rate CR2 between 15 to 150° C./s in a temperature range between 450° C. and 250° C., wherein CR2
C22C 38/26 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
B21D 22/02 - Estampage utilisant des dispositifs ou outils rigides
C21D 1/673 - Dispositifs pour trempe pour la trempe en coquille
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/46 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/44 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/50 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/54 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du bore
C22C 38/48 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 21/02 - Alliages à base d'aluminium avec le silicium comme second constituant majeur
B21B 1/22 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilés; Séquence des opérations dans les trains de laminoirs; Installation d'une usine de laminage, p.ex. groupement de cages; Succession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies
C21D 6/00 - Traitement thermique des alliages ferreux
C22C 38/22 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
A method of casting a steel semi-product wherein a liquid steel is poured from a ladle to a tundish through a shroud including the steps of determining the light intensity emitted from the surface of the liquid steel in the tundish, detecting, based on said determined intensity, the presence of an open-eye at the surface of the liquid steel and emitting an alert towards an operator when an open-eye is detected.
A method for the manufacture of a steel sheet, in a device including a pre-heating section, a heating section having a maximal heating rate and a soaking section including a calibrating step, a recrystallization annealing and a soaking and a coating step. The calibration step permits to define a lower dew point permitting to achieve a predefined quality target.
Side structure (1) for a motor vehicle (3) including an inner and outer frame (11, 13) each forming a closed ring and having two openings corresponding to the front and rear doors (8, 10), wherein the inner and outer frames (11, 13) are each formed by hot stamping respectively an inner and an outer frame blank (111, 113), each being a single tailor welded blank made of steel and wherein the inner and outer frames (11,13) are assembled to form a hollow volume (7) between them.
A method for manufacturing a thermally treated steel sheet is described. The method includes:
A. preparation step containing:
1) a selection substep, wherein:
a. mtarget and a chemical composition are compared to a list of predefined products, whose microstructure contains predefined phases and predefined proportion of phases, and a product having a microstructure mstandard closest to mtarget and TPstandard is selected, including at least a heating, a soaking and a cooling steps, to obtain mstandard,
b. a heating path, a soaking path including a soaking temperature Tsoaking, a power cooling of the cooling system and a cooling temperature Tcooling are selected based on TPstandard and
2) a calculation substep, wherein through variation of the cooling power, new cooling paths CPx are calculated based on the product selected in step A.1)a and TPstandard, the initial microstructure mi of the steel sheet to reach mtarget, the heating path, the soaking path comprising Tsoaking and Tcooling, the cooling step of TPstandard is recalculated using said CPx in order to obtain new thermal paths TPx, each TPx corresponding to a microstructure mx,
3) a selection substep wherein one TPtarget to reach mtarget is selected, TPtarget being chosen among the calculated thermal paths TPx and being selected such that mx is the closest to mtarget, and
B. a thermal treatment step wherein TPtarget is performed on the steel sheet.
C21D 11/00 - Commande ou régulation du processus lors de traitements thermiques
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 1/667 - Dispositifs pour trempe pour la trempe par pulvérisation
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
A method for the manufacture of a self-standing graphene oxide or reduced graphene oxide film having a thickness between 0.4 and 4.0 μm, including the successive steps of A) preparing an aqueous dispersion including 0.1 to 30 g·L−1 of graphene oxide or reduced graphene oxide, B) depositing the aqueous dispersion on a flat substrate coated with a polymeric film dissolvable in organic solvents and unsolvable in water, so as to form a wet film having a thickness comprised between 1 μm and 3.5 mm, C) drying the wet film, D) separating the polymeric film from the flat substrate, E) placing the polymeric film in a support frame, F) showering the polymeric film with an organic solvent to dissolve the polymeric film, G) separating the graphene oxide or reduced graphene oxide film from the frame to obtain the self-standing graphene oxide or reduced graphene oxide film.
A steel for rail having the following elements, 0.25%≤C≤0.8%; 1.0%≤Mn≤2.0%; 1.40%≤Si≤2%; 0.01%≤Al≤1%; 0.8%≤Cr≤2%; 0≤P≤0.09%; 0≤S≤0.09%; 0%≤N≤0.09%; 0%≤Ni≤1%; 0%≤Mo≤0.5%; 0%≤V≤0.2%; 0%≤Nb ≤0.1%; 0%≤Ti≤0.1%; 0%≤Cu≤0.5%; 0%≤B≤0.008%; 0%≤Sn≤0.1%; 0% ≤Ce≤0.1%; 0%≤Mg≤0.10%; 0%≤Zr≤0.10%; the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure having, by area percentage, 2% to 10% of Proeutectoid Ferrite, the balance being made of Pearlite wherein the pearlite having interlamellar spacing from 100 nm to 250 nm .
A scrap inventory management method allowing to have a better control of scrap stocks. The method includes a calculation step of at least one combination of an action to be performed and an associated quantity for a given scrap based on characteristics of the liquid steel to be produced and on scrap properties.
Rear underfloor structure (2) for a motor vehicle (1) including a first and a second side member (4) and at least one cross member (5) linking the first and second side members (4), wherein the rear underfloor structure (2) is made by stamping a single tailor welded blank (26) comprising at least two sub-blanks.
A trimming device for metallic sheets including: an upper knife, comprising a central circular face having a diameter D1 and a thickness T1, mounted on an upper shaft, a lower knife, comprising a central circular face having a diameter D2 and a thickness T2, mounted on a lower shaft, wherein said upper knife and said lower knife are vertically shifted with an overlap (DOVERLAP) so as to define a shear of said metallic sheet and wherein at least one of said upper or lower shaft is able to be moved vertically, a first distance sensor, able to measure a vertical distance to the upper end of said upper knife, a second distance sensor, able to measure a vertical distance to the lower end of said lower knife, a computer able to compute the overlap.
B23D 35/00 - Outils des machines à cisailler ou des dispositifs de cisaillage; Porte-outils ou mandrins pour ces outils
B23D 19/04 - Machines à cisailler ou dispositifs de cisaillage taillant au moyen de disques rotatifs ayant des disques de cisaillage rotatifs disposés par paires travaillant conjointement
29.
Process and equipment to Laser cut very high strength metallic material
Laser cutting process to produce n trimmed sub-blanks, n being an integer strictly greater than 1, from a mother blank made of metallic material, having the following steps: Op1/ positioning the mother blank on a cutting table having n laths arranged to be moveable relative to one another in a transverse direction, Op2/ clamping at least part of the mother blank to the cutting table, Op3/ cutting, using a laser source, n untrimmed sub-blanks from the mother blank in a longitudinal cutting direction, Op4/ separating the n laths of the cutting table from one another in a transverse direction, Op5/ releasing the clamping, Op6/ clamping the n untrimmed sub-blanks to the n laths, Op7/ laser trimming the n untrimmed sub-blanks in order to form n trimmed sub-blanks, Op8/ releasing the clamping, Op9/ discharging the n trimmed sub-blanks from the cutting table.
B23K 26/38 - Enlèvement de matière par perçage ou découpage
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
30.
HIGH STRENGTH AND HIGH FORMABILITY STEEL SHEET AND MANUFACTURING METHOD
A cold-rolled and heat-treated steel sheet, has a composition comprising, by weight percent: n0.10%≤C≤0.25%, 3.5%≤Mn≤6.0%, 0.5%≤Si≤2.0%, 0.3%≤Al≤1.2%, with Si+Al≥0.8%, 0.10%≤Mo≤0.50%, S≤0.010%, P≤0.020%, N≤0.008%. The cold-rolled steel sheet has a microstructure consisting of, in surface fraction: between 10% and 45% of ferrite, having an average grain size of at most 1.3 μm, the product of the surface fraction of ferrite by the average grain size of the ferrite being of at most 35 μm %, between 8% and 30% of retained austenite, the retained austenite having an Mn content higher than 1.1*Mn %, Mn % designating the Mn content of the steel, at most 8% of fresh martensite, at most 2.5% of cementite and partitioned martensite.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
B23K 11/16 - Soudage par résistance tenant compte des propriétés du métal à souder
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
A method for manufacturing a steel sheet provided with a coating included from 0.80 to 1.40 wt. % of Al, from 0.80 to 1.40 wt. % of Mg, unavoidable impurities and optionally one or more additional elements selected from Si, Sb, Pb, Ti, Ca, Mn, Sn, La, Ce, Cr, Zr or Bi, the weight content of each additional element in the coating being less than 0.3%, the remainder being Zn, the outer surface of the coated steel sheet having a waviness Wa0.8 before skin-pass of less than or equal to 0.50 μm; the coated steel sheet obtained by this method; the part obtained by deformation of a steel sheet and a land motor vehicle comprising a body, the body including the part.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
A method for producing a welded blank (1) includes providing two precoated sheets (2), butt welding the precoated sheets (2) using a filler wire. The precoating (5) entirely covers at least one face (4) of each sheet (2) at the time of butt welding. The filler wire (20) has a carbon content between 0.01 wt. % and 0.45 wt. %. The composition of the filler wire (20) and the proportion of filler wire (20) added to the weld pool is chosen such that the weld joint (22) has (a) a quenching factor FTWJ: FTWJ−0.9FTBM≥0, where FTBM is a quenching factor of the least hardenable substrate (3), and FTWJ and FTBM are determined: FT=128+1553×C+55×Mn+267×Si+49×Ni+5×Cr−79×Al−2×Ni2−1532×C2−5×Mn2−127×Si2−40×C×Ni−4×Ni×Mn, and (b) a carbon content CWJ<0.15 wt. % or, if CWJ≥0.15 wt. %, a softening factor FAWJ such that FAWJ>5000, where FA=10291+4384.1×Mo+3676.9Si−522.64×Al−2221.2×Cr−118.11×Ni−1565.1×C−246.67×Mn.
B62D 21/15 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée comportant des moyens amortisseurs de chocs, p.ex. châssis conçus pour changer de forme ou de dimensions d'une façon définitive ou temporaire à la suite d'une collision avec un autre corps
B23K 33/00 - Extrémités de pièces spécialement profilées pour effectuer des assemblages brasés ou soudés; Remplissage des joints continus ainsi formés
B23K 35/24 - Emploi de matériaux spécifiés pour le soudage ou le brasage
B23K 35/38 - Emploi d'environnements spécifiés, p.ex. d'atmosphères particulières entourant la zone de travail
B62D 27/02 - Assemblages entre sous-ensembles de la carrosserie rigides
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 9/50 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour joints de soudure
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
C22C 30/02 - Alliages contenant moins de 50% en poids de chaque constituant contenant du cuivre
B23K 35/368 - Emploi de compositions non métalliques spécifiées pour fil fourré, soit seules, soit liées à l'emploi de matériaux spécifiés pour le brasage ou le soudage
B23K 35/362 - Emploi de compositions spécifiées de flux
B23K 35/02 - Baguettes, électrodes, matériaux ou environnements utilisés pour le brasage, le soudage ou le découpage caractérisés par des propriétés mécaniques, p.ex. par la forme
A method for estimating the oxide thickness and the temperature of a heated steel strip, undergoing a heat treatment performed at a temperature from 100° C. to 1100° C., including the steps of 1. measuring at least two radiation intensities at different wavelengths, in a range from 1 to 5 μm, emitted by the heated steel strip, 2. estimating the temperature of the heated steel strip, TESTIMATED, based on the at least two measured radiation intensities and a reference radiation intensity for at least a reference wavelength, emitted by a reference steel strip having a determined oxide layer thickness, estimating the emissivity coefficient of the heated steel strip, εESTIMATED, using at least one of the measured radiation intensities and the estimated temperature, TESTIMATED, 4. estimating the oxide thickness, OxESTIMATED, of the heated steel strip using the estimated emissivity, εESTIMATED.
G01J 5/00 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique
G01B 21/08 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
G01J 5/02 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique - Détails structurels
G01J 5/60 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique en utilisant la détermination de la température de couleur
G01J 5/80 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique Étalonnage
35.
Device to inject a reducing gas into a shaft furnace
A device to inject a reducing gas into a shaft furnace including an external casing whose front face is provided with an outlet for gas injection into the shaft furnace, an internal casing located inside the external casing and made of a steel able to resist to a temperature up to 1200° C., this internal casing having an opening matching the gas injection outlet of the front face of the external casing and a refractory layer located between the external casing and the internal casing.
A blast furnace for ironmaking production wherein iron ore is at least partly reduced by a reducing gas which is injected in the stack of the blast furnace. The blast furnace includes an external and an internal wall, having a thickness Tint, in contact with matters charged into the blast furnace. The thickness Tint of the internal wall is substantially constant above and below the injection area of a reducing gas.
A lance (1) for blowing oxygen onto a bath of molten steel including a tip (15) provided with first oxygen ejector (16) and a distributor (17) provided with second ejector (18).
A blast furnace for ironmaking production wherein iron ore is at least partly reduced by a reducing gas which is injected in the stack of the blast furnace. The blast furnace includes an external wall, an internal wall in contact with matters charged into the blast furnace, the internal wall including several rows of staves having a parallelepipedal shape. At least one row of staves comprises staves with a hole drilled in a least one of the corners of the parallelepipedal stave wherein an injection device may be partly inserted in.
A cooling method of a travelling coated steel strip, exiting a hot-dip coating bath, including the steps of A) sucking a gas into a cooling device, B) filtering the sucked gas by a filtering system capturing at least 50% of the particles having a size of at least 2.5 µm, C) blowing, at a velocity comprised from 1 to 80 m.s-1, the sucked and filtered gas onto the coated steel strip.
A structural components node (9) a crash box connector (14) and a crash extender connector (13) each having a top plate extending in a substantially horizontal plane and allowing to secure directly together the crash extender (7) and the crash box (8). Advantageously, the structural components node (9) can further optionally include connections with a hanger (10) and a front transverse member (11). It is possible to reduce the amount of welding operations needed to assemble the structural components node (9) and to provide a robust structural components node (9) ensuring a high structural strength to the assembly and an efficient cooperation between the lower and middle load paths and between the left and right side of the vehicle in case of a front impact. A process of assembling such a structural components node (9) is also provided.
B62D 21/15 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée comportant des moyens amortisseurs de chocs, p.ex. châssis conçus pour changer de forme ou de dimensions d'une façon définitive ou temporaire à la suite d'une collision avec un autre corps
B62D 27/02 - Assemblages entre sous-ensembles de la carrosserie rigides
B62D 21/02 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée comprenant des éléments d'armature disposés longitudinalement ou transversalement
A blast furnace for ironmaking production wherein iron ore is at least partly reduced by a reducing gas which is injected in the stack of the blast furnace in an injection zone, the blast furnace comprising an external wall and an internal wall in contact with matters charged into the blast furnace, wherein in the injection zone the internal wall comprises local inwards enlargements and the reducing gas injections are performed below said inwards enlargements.
A cold rolled and coated steel sheet, the steel including 0.30%≤carbon 0.45%, 1≤manganese≤2.5%, 0.9%≤silicon≤2.2%, 0%≤aluminum≤0.09%, 0.001≤niobium≤0.09%, 0%≤phosphorus≤0.02%, 0%≤sulfur≤0.03%, 0%≤nitrogen≤0.09%, and optionally one or more of the following elements 0%≤molybdenum≤0.5%, 0%≤chromium≤0.6%, 0%≤titanium≤0.06%, 0%≤vanadium≤0.1%, 0%≤calcium≤0.005%, 0%≤boron≤0.010%, 0%≤Magnesium≤0.05%, 0%≤Zirconium≤0.05%, 0%≤Cerium≤0.1%, and the balance including iron and unavoidable impurities, the steel sheet having a microstructure comprising 35% to 65% Partitioned Martensite, 15% to 40% of Bainite, 14% to 30% of residual austenite, 4% to 15% of ferrite and 0% to 10% fresh martensite in area fractions, the balance being partitioned martensite.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
A steel for leaf spring including of the following elements 0.4% ≦ C ≦ 0.7 %; 0.5% ≦ Mn ≦1.5 %;1% ≦ Si ≦ 2.5 %; 0.001% ≦ Al ≦ 0.1%; 0.1% ≦ Ni ≦ 1%;0.2% ≦ Cr ≦ 1.5 %; 0 ≦ P ≦ 0.09%; 0 ≦ S ≦ 0.09%; 0% ≦ N ≦ 0.09%; 0% ≦ Mo ≦ 0.5%; 0% ≦ V ≦ 0.2%; 0% ≦ Nb ≦ 0.1%; 0% ≦ Ti ≦ 0.1%; 0% ≦ Cu ≦ 1%; 0% ≦ B ≦ 0.008%; 0% ≦ Sn ≦ 0.1%; 0% ≦ Ce ≦ 0.1%; 0% ≦ Mg ≦ 0.10%; 0% ≦ Zr ≦ 0.10%; the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel including, by area percentage, 75% to 98% of Martensite, 2% to 20% of Residual Austenite, with a cumulative optional presence of bainite and ferrite between 0% to 5%.
A steel for forging mechanical parts including of the following elements 0.04%≤C≤0.28%; 1.2%≤Mn≤2.2%; 0.3%≤Si≤1.2%; 0.5%≤Cr≤1.5%; 0.01%≤Ni≤1%; 0%≤S≤0.06%; 0%≤P≤0.02%; 0%≤N≤0.015%; 0%≤Al≤0.1%; 0.03%≤Mo≤0.5%; 0%≤Cu≤0.5%; 0.04%≤Nb≤0.15%; 0.01%≤Ti≤0.1%; 0%≤V≤0.5%; 0.0015%≤B≤0.004%; the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel having microstructure including in area fraction, 55% to 85% of Martensite, 20% to 45% of Auto-tempered Martensite, 0 to 10% Residual Austenite and, wherein cumulated amounts of Auto-tempered martensite and martensite is at least 90%.
A cold rolled, annealed and partitioned steel sheet, made of a steel having a composition including, by weight percent: C: 0.05 - 0.18%, Mn: 6.0 - 11.0%, Mo: 0.05 - 0.5%, B: 0.0005 - 0.005%, S ≤ 0.010%, P ≤ 0.020%, N ≤ 0.008%, and including optionally one or more of the following elements, in weight percentage: Al < 3%, Si ≤ 1.20%, Ti ≤ 0.050%, Nb ≤ 0.050%, Cr ≤ 0.5%, V ≤ 0.2%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, said steel sheet having a microstructure including, in surface fraction, from 0% to 30% of ferrite, such ferrite, when present, having a grain size below 1.0 µm, from 8% to 40% of retained austenite, the fraction of austenite islands with a size above 0.5 µm being below or equal to 5% from 30 to 92% of partitioned martensite less than 3% of fresh martensite, a carbon [C]A and manganese [Mn]A content in austenite, expressed in weight percent, such that the ratio ([C]A2 x [Mn]A) / (C%2 x Mn%) is below 18.0, C% and Mn% being the nominal values in carbon and manganese in weight %.
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
B32B 7/05 - Liaison entre couches les couches n’étant pas liées sur toute la surface, p. ex. liaison discontinue ou par motifs particuliers
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 6/00 - Traitement thermique des alliages ferreux
F16B 5/08 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par soudage ou procédés similaires
A cold rolled and double annealed steel sheet, made of a steel having a composition including, by weight percent: C: 0.03-0.18%, Mn: 6.0-11.0%, 0.2≤Al<3%, Mo: 0.05-0.5%, B: 0.0005-0.005%, S≤0.010%, P≤0.020%, N≤0.008%, and including optionally one or more of the following elements. In weight percentage: Si≤1.20%, Nb≤0.050%, Ti≤0.050%, Cr≤0.5%,V≤0.2%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure including, in surface fraction, from 0% to 45% of ferrite, from 20% to 50% of retained austenite, from 5 to 80% of annealed martensite, less than 5% of fresh martensite, a carbon [C]A and manganese [Mn]A content in austenite, expressed in wt %, such that the ratio ([C]A2×[Mn]A)/(C %2×Mn %) is from 4.5 to 11.0, C % and Mn % being the nominal C and Mn weight percent in the steel and a carbides density below 4×106/mm2.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
A cold rolled and annealed steel sheet, made of a steel having a composition including, by weight percent: C: 0.03-0.18%, Mn: 6.0-11.0%, Al: 0.2-3%, Mo: 0.05-0.5%, B: 0.0005-0.005%, S≤0.010%, P≤0.020%, N≤0.008%, and including optionally one or more of the following elements, in weight percentage: Si≤1.20%, Ti≤0.050%, Nb≤0.050%, Cr≤0.5%, V≤0.2%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure including, in surface fraction, from 25% to 55% of retained austenite, from 5% to 50% of ferrite, from 5 to 70% of partitioned martensite less than 5% of fresh martensite, a carbon [C]A and manganese [Mn]A content in austenite, expressed in weight percent, such that the ratio ([C]A2×[Mn]A)/(C %2×Mn %) is from 3.0 to 8.0, C % and Mn % being the nominal values in carbon and manganese in weight % and an inhomogeneous repartition of manganese characterized by a manganese distribution with a slope above or equal to −40.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 6/00 - Traitement thermique des alliages ferreux
B32B 7/05 - Liaison entre couches les couches n’étant pas liées sur toute la surface, p. ex. liaison discontinue ou par motifs particuliers
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
48.
Hot rolled and heat-treated steel sheet and method of manufacturing the same
A hot rolled and heat-treated steel sheet, made of a steel having a composition including, by weight percent: C: 0.03-0.18%, Mn: 6.0-11.0%, Mo: 0.05-0.5%, B: 0.0005-0.005%, S≤0.010%, P≤0.020%, N≤0.008%, and including optionally one or more of the following elements, in weight percentage: Al<3%, Si≤1.20%, Ti≤0.050%, Nb=0.050%, Cr≤0.5%, V≤0.2%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure including, in surface fraction, from 10% to 60% of retained austenite, from 40% to 90% of ferrite, less than 5% of martensite, carbides below 0.8%, and an inhomogeneous repartition of manganese, characterized by a manganese distribution with a slope above or equal to −40.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 6/00 - Traitement thermique des alliages ferreux
Equipment for the continuous hot dip-coating of a metal strip 9 including an annealing furnace, a tank 2 containing a liquid metal bath 3, a snout connecting the annealing furnace and tank 2, through which the metal strip 9 runs in a protective atmosphere and the lower part of the snout, the sabot 5, is at least partly immersed in the liquid metal bath 3 in order to define with the surface of the bath, and inside this snout, a liquid seal 6, an overflow 7 not connected to the snout, the overflow 7 including at least one tray 8, placed in the vicinity of the strip 9 when entering the liquid metal bath 3 and encompassed by liquid seal 6.
C23C 2/00 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergé; Appareils à cet effet
C21D 9/56 - Fours continus pour bandes ou fils métalliques
C23C 2/02 - Pré-traitement du matériau à revêtir, p.ex. pour le revêtement de parties déterminées de la surface
C23F 17/00 - Procédés à étapes multiples pour le traitement de surface de matériaux métalliques utilisant au moins un procédé couvert par la classe et au moins un procédé couvert soit par la sous-classe , soit par la sous-classe , soit par la classe
50.
HEAT TREATED COLD ROLLED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF
A heat treated cold rolled steel sheet with the following elements, 0.1%≤C≤0.2%; 1.2%≤Mn≤2.2%; 0.05%≤Si≤0.6%; 0.001%≤Al≤0.1%; 0.01%≤Cr≤0.5 %; 0%≤S≤0.09%; 0%≤P≤0.09%; 0%≤N≤0.09%; 0%≤Mo≤0.5%; 0%≤Ti≤0.1%; 0%≤Nb≤0.1%; 0%≤V≤0.1%; 0%≤Ni≤1%; 0%≤Cu≤1%; 0%≤Ca≤0.005%; 0%≤B≤0.05%; the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel having, by area percentage, 60% to 85% of tempered martensite, a cumulated amount of ferrite and bainite of 15% to 38%, an optional amount of residual austenite of 0% to 5% and an optional amount of fresh martensite of 0 to 5%.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
A cold rolled, annealed and tempered steel sheet, made of a steel having a composition including, by weight percent: C: 0.03-0.18%, Mn: 6.0-11.0%, Al: <3%, Mo: 0.05-0.5%, B: 0.0005-0.005%, S≤0.010%, P≤0.020%, N≤0.008%, and optionally one or more of the following elements, in weight percentage: Si≤1.20%, Ti≤0.050%, Nb≤0.050%, Cr≤0.5%, V≤0.2%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure including, in surface fraction, from 0% to 30% of ferrite, such ferrite having a grain size below 1.0 μm, from 3% to 30% of retained austenite, from 40 to 95% of tempered martensite less than 5% of fresh martensite, a carbon [C]A and manganese [Mn]A content in austenite, expressed in weight percent, such that the ratio ([C]A2×[Mn]A)/(C %2×Mn %) is below 7.80, C % and Mn % being the nominal values in carbon and manganese in weight %.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 6/00 - Traitement thermique des alliages ferreux
52.
Cold rolled and annealed steel sheet and method of manufacturing the same
A cold rolled and annealed steel sheet, made of a steel having a composition including, by weight percent: C: 0.03-0.18%, Mn: 6.0-11.0%, Al: 0.2-3%, Mo: 0.05-0.5%, B: 0.0005-0.005%, S 0.010%, P 0.020%, N 0.008%, and including optionally one or more of the following elements, in weight percentage: Si≤1.20%, Ti≤0.050%, Nb≤0.050%, Cr≤0.5%, V≤0.2%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure including, in surface fraction, from 25% to 55% of retained austenite, from 45% to 75% of ferrite, less than 5% of fresh martensite, a carbon [C]A and manganese [Mn]A content in austenite, expressed in weight percent, such that the ratio ([C]A×[Mn]2A)/(C %×Mn %) is from 19.0 to 41.0 wt %, C % and Mn % being the nominal values in carbon and manganese in weight % and a carbides density below 3×106/mm2 and—an inhomogeneous repartition of manganese characterized by a manganese distribution with a slope above or equal to −30.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 6/00 - Traitement thermique des alliages ferreux
F16B 5/08 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par soudage ou procédés similaires
53.
ZINC-COATED STEEL SHEET WITH HIGH RESISTANCE SPOT WELDABILITY
A method for producing a zinc or zinc-alloy coated steel sheet with a tensile strength higher than 900 MPa, for the fabrication of resistance spot welds containing in average not more than two Liquid Metal Embrittlement cracks per weld having a depth of 100 μm or more, with steps of providing a cold-rolled steel sheet, heating cold-rolled steel sheet up to a temperature T1 between 550° C. and Ac1+50° C. in a furnace zone with an atmosphere (A1) containing from 2 to 15% hydrogen by volume, so that the iron is not oxidized, then adding in the furnace atmosphere, water steam or oxygen with an injection flow rate Q higher than (0.07%/h×α), α being equal to 1 if said element is water steam or equal to 0.52 if said element is oxygen, at a temperature T≥T1, so to obtain an atmosphere (A2) with a dew point DP2 between −15° C. and the temperature Te of the iron/iron oxide equilibrium dew point, then heating the sheet from temperature T1 up to a temperature T2 between 720° C. and 1000° C. in a furnace zone under an atmosphere (A2) of nitrogen containing from 2 to 15% hydrogen and more than 0.1% CO by volume, with an oxygen partial pressure higher than 10−21 atm., wherein the duration to of heating of the sheet from temperature T1 up to the end of soaking at temperature T2 is between 100 and 500 s, soaking the sheet at T2, then cooling the sheet at a rate between 10 and 400° C./s, then coating the sheet with zinc or zinc-alloy coating.
C21D 9/50 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour joints de soudure
B23K 11/16 - Soudage par résistance tenant compte des propriétés du métal à souder
B23K 31/12 - Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux relatifs à la recherche des propriétés, p.ex. de soudabilité, des matériaux
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
C21D 1/76 - Réglage de la composition de l'atmosphère
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C23F 17/00 - Procédés à étapes multiples pour le traitement de surface de matériaux métalliques utilisant au moins un procédé couvert par la classe et au moins un procédé couvert soit par la sous-classe , soit par la sous-classe , soit par la classe
C25D 5/36 - Prétraitement des surfaces métalliques à revêtir de métaux par voie électrolytique de fer ou d'acier
54.
Cold rolled and annealed steel sheet and method of manufacturing the same
A cold rolled and annealed steel sheet, made of a steel having a composition including, by weight percent
C: 0.03-0.18%,
Mn: 6.0-11.0%,
Al: 0.2-3%,
Mo: 0.05-0.5%,
B: 0.0005-0.005%,
S≤0.010%,
P≤0.020%,
N≤0.008%,
and including optionally one or more of the following elements, in weight percentage:
Si≤1.20%,
Ti≤0.050%,
Nb≤0.050%,
Cr≤0.5%,
V≤0.2%,
the remainder of the composition being iron and unavoidable impurities resulting from the smelting,
the steel sheet having a microstructure including, in surface fraction, from 25% to 54% of retained austenite, from 46% to 75% of ferrite, less than 8% of fresh martensite, a carbon [C]A and manganese [Mn]A content in austenite, expressed in weight percent, wherein [C]A*√[Mn]A is from 0.48 to 1.8, and an inhomogeneous repartition of manganese characterized by a manganese distribution with a slope above or equal to −50.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
Rear lower control arm (5) for a motor vehicle including a top part (5t) and a bottom part (5b) defining together a hollow volume (5h), the top and bottom parts (5t, 5b) each including respectively a top and bottom first hole (17t, 17b) and a top and bottom second hole (19t, 19b), wherein the top and bottom parts (5t, 5b) are joined together by securing together at least part of said top and bottom horizontal surface outer peripheries (5tho, 5bho), at least part of the top and bottom first hole side walls outer peripheries (17tso, 17bso), at least part of said top and bottom second hole side walls outer peripheries (19tso, 19bso).
A hot-dip coated steel substrate coated with a layer of Sn directly topped by a zinc or an aluminum based coating is provided, the steel substrate having the following chemical composition in weight percent:
0.10≤C≤0.4%,
1.2≤Mn≤6.0%,
0.3≤Si≤2.5%,
Al<2.0%,
and on a purely optional basis, one or more elements such as
P<0.1%, Nb
≤0.5%, B≤
0.005%,
Cr≤1.0%,
Mo≤0.50%,
Ni≤1.0%,
Ti≤0.5%,
the remainder of the composition making up of iron and inevitable impurities resulting from the elaboration, the steel substrate further having between 0.0001 and 0.01% by weight of Sn in the region extending from the steel substrate surface up to 10 μm.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
B21B 3/02 - Laminage des alliages ferreux particuliers
B21B 1/22 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilés; Séquence des opérations dans les trains de laminoirs; Installation d'une usine de laminage, p.ex. groupement de cages; Succession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 6/00 - Traitement thermique des alliages ferreux
C22C 38/58 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C22C 38/50 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/48 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/44 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
The present invention relates to a manufacturing method of a steel strip, a steel strip with controlled decarburized depth, a spot welded joint and the use of said steel strip or said spot welded joint. This invention is particularly well suited for the automotive industry due to the improvement of the Liquid Metal Embrittlement (LME) resistance along with target mechanical properties.
C21D 9/52 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour bandes métalliques
59.
A method of casting a steel semi-product with high titanium content
A method of casting a steel semi-product from a liquid steel, the steel semi-product having a targeted composition in titanium of at least 3.5% in weight.
A cold rolled, coated and post batch annealed steel sheet produced by a method is provided. The method includes cold rolling a steel sheet; coating the cold rolled steel sheet with a zinc or zinc alloy coating, the cold rolled, coated steel sheet having an initial hole expansion and an initial yield strength and post batch annealing the cold rolled, coated steel sheet at a tempering temperature in a range from 150 to 650° C., the post batch annealed steel sheet having a final hole expansion and a final yield strength. The steel sheet includes (in wt. %) C-0.1-0.3%, Mn-1-3%, Si-0.5-3.5%, Al-0.05-1.5% and Mo+Cr being between 0-1.0%. The final hole expansion is at least 80% greater than the initial hole expansion and the final yield strength is at least 30% greater than the initial yield strength.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
The present invention relates to a method for the manufacture of a galvannealed steel sheet including the steps of A.) coating of the steel sheet with a first coating consisting of nickel and having a thickness between 150 nm and 650 nm, the steel sheet having the following composition in weight percentage 0.10
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C23C 10/28 - Diffusion à l'état solide uniquement d'éléments métalliques ou de silicium dans la couche superficielle de matériaux métalliques au moyen de solides, p.ex. au moyen de poudres, de pâtes
C25D 3/12 - Dépôt électrochimique; Bains utilisés à partir de solutions de nickel ou de cobalt
C25D 3/22 - Dépôt électrochimique; Bains utilisés à partir de solutions de zinc
C25D 5/12 - Dépôt de plusieurs couches du même métal ou de métaux différents au moins une couche étant du nickel ou du chrome
C25D 5/50 - Post-traitement des surfaces revêtues de métaux par voie électrolytique par traitement thermique
62.
COLD ROLLED AND HEAT-TREATED STEEL SHEET AND METHOD OF MANUFACTURING THEREOF
A cold rolled and heat-treated steel sheet, the steel including, in weight percentage, 0.17%≤carbon≤0.25%, 2%≤manganese≤3%, 0.9%≤silicon≤2%, 0%≤aluminum≤0.09%, 0.01%≤molybdenum≤0.2%, 0%≤phosphorus≤0.02%, 0%≤sulfur≤0.03%, 0%≤nitrogen≤0.09%, and optionally one or more of the following elements 0%≤chromium≤0.3%, 0%≤niobium≤0.06%, 0%≤titanium≤0.06%, 0%≤vanadium≤0.1%, 0%≤calcium≤0.005%, 0%≤boron≤0.010%, 0%≤Magnesium≤0.05%, 0%≤Zirconium≤0.05%, 0%≤Cerium≤0.1%, and the balance including iron and unavoidable impurities, the steel sheet having a microstructure of—50% to 80% of Bainite, 10% to 30% of residual austenite, 15% to 50% of Partitioned martensite, 0% to 10% of ferrite and 0% to 5% fresh martensite in area fractions, and a ferrite-enriched layer extending up to 50 microns from both surfaces of the steel sheet, such ferrite-enriched layer having a mean ferrite content from 55% to 80% in area fraction.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
Reinforced rocker assembly having a closed section reinforcement located in the hollow volume formed between the rocker components, wherein the reinforcement is assembled to a rocker component in the transition zones between an upper horizontal wall and an upper flange of the rocker component and in the transition zones between a lower horizontal wall and a lower flange of the rocker component and wherein in the transition zones, the angles α and β formed between the flange and the branch of the reinforcement extending outwards of the rocker component are between 90° and 180°.
B62D 21/15 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée comportant des moyens amortisseurs de chocs, p.ex. châssis conçus pour changer de forme ou de dimensions d'une façon définitive ou temporaire à la suite d'une collision avec un autre corps
A cold rolled and annealed steel sheet includes by weight: 0.6≤C≤1.3%, 15.0≤Mn≤35%, 5≤Al≤15%, Si≤2.40%, S≤0.03%, P≤0.1%, N≤0.1%, possibly one or more optional elements chosen among Ni, Cr and Cu in an respective amount of up to 4.0%, up to 3.0% and up to 3.0% and possibly one or more elements chosen among B, Ta, Zr, Nb, V, Ti, Mo, and W in a cumulated amount of up to 2.0%, the remainder of the composition making up of iron and inevitable impurities resulting from the elaboration, the microstructure of the sheet including optionally up to 3% of kappa carbides, optionally up to 10.0% of granular ferrite, the remainder being made of austenite, the average grain size and average aspect ratio of the austenite being respectively below 6 μm and comprised between 1.5 and 6 and the average grain size and average aspect ratio of the ferrite, when present, being respectively below 5 μm and below 3.0.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 6/00 - Traitement thermique des alliages ferreux
C22C 38/12 - Alliages ferreux, p.ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
A method for maintaining the optimal argon injection flow rate which will result in production of steel slab of a chosen alloy having optimal cleanliness. The steel is cast using an argon injected slide gate. The selected steel has a known optimal argon injection flow rate Qb* for casting steel of optimal cleanliness. The method involves calculating the present steel pressure and determining the present injection flow rate conductance Gb′ of the argon injected slide gate during either of 1) a steel pressure change event; or 2) an argon flow change event. The measurements are used to calculate present argon pressure required to insure the required injection flow rate of argon into the steel for optimal cleanliness of the cast steel.
B22D 41/58 - Buses de coulée avec des moyens d'injection de gaz
B22D 11/117 - Affinage du métal en le traitant par des gaz
B22D 41/42 - Caractéristiques relatives à l'injection de gaz
66.
Steel sheet for manufacturing press hardened parts, press hardened part having a combination of high strength and crash ductility, and manufacturing methods thereof
A steel sheet for the manufacture of a press hardened part is provided, having a composition of: 0.15%≤C≤0.22%, 3.5%≤Mn<4.2%, 0.001%≤Si≤1.5%, 0.020%≤Al≤0.9%, 0.001%≤Cr≤1%, 0.001%≤Mo≤0.3%, 0.001%≤Ti≤0.040%, 0.0003%≤B≤0.004%, 0.001%≤Nb≤0.060%, 0.001%≤N≤0.009%, 0.0005%≤S≤0.003%, 0.001%≤P≤0.020%. A microstructure has less than 50% ferrite, 1% to 20% retained austenite, cementite, such that the surface density of cementite particles larger than 60 nm is lower than 10{circumflex over ( )}7/mm2, and a complement of bainite and/or martensite, the retained austenite having an average Mn content of at least 1.1*Mn %. Press-hardened steel part obtained by hot forming the steel sheet, and manufacturing methods thereof.
C21D 9/50 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour joints de soudure
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C22C 38/22 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/26 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
67.
Steel sheet for manufacturing press hardened parts, press hardened part having a combination of high strength and crash ductility, and manufacturing methods thereof
A steel sheet for the manufacture of a press hardened part is provided, having a composition of: 0.15%≤C≤0.22%, 3.5%≤Mn<4.2%, 0.001%≤Si≤1.5%, 0.020%≤Al≤0.9%, 0.001%≤Cr≤1%, 0.001%≤Mo≤0.3%, 0.001%≤Ti≤0.040%, 0.0003%≤B≤0.004%, 0.001%≤Nb≤0.060%, 0.001%≤N≤0.009%, 0.0005%≤S≤0.003%, 0.001%≤P≤0.020%. A microstructure has less than 50% ferrite, 1% to 20% retained austenite, cementite, such that the surface density of cementite particles larger than 60 nm is lower than 10{circumflex over ( )}7/mm2, and a complement of bainite and/or martensite, the retained austenite having an average Mn content of at least 1.1*Mn %. Press-hardened steel part obtained by hot forming the steel sheet, and manufacturing methods thereof.
C21D 9/50 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour joints de soudure
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
A method for producing a coated steel sheet having a tensile strength TS of at least 1100 MPa, a total elongation TE according to ISO standard 6892-1 of at least 12%, the product TS×TE of the tensile strength by the total elongation being at least 14200 MPa %, and a hole expansion ratio HER according to ISO standard 16630:2009 of at least 25%, the method including the following successive steps:
providing a cold-rolled steel sheet, the chemical composition of the steel containing in weight %: 0.15%≤C≤0.23%, 2.0%≤Mn≤2.7%, with C+Mn/10≥0.420%, 0≤Cr≤0.40%, with Mn+Cr≥2.25%, 0.2%≤Si≤1.6%, 0.02%≤Al≤1.2%, with 1.0%≤Si+Al≤2.2%, 0≤Nb≤0.035%≤Mo≤0.1%, the remainder being Fe and unavoidable impurities,
annealing the steel sheet at an annealing temperature TA so as to obtain a structure comprising at least 65% of austenite and at most 35% of intercritical ferrite,
quenching the sheet from a temperature of at least 600° C. at a cooling rate comprised between 20° C./s and 50° C./s down to a quenching temperature QT between 200° C. and 270° C.,
heating the sheet up to a partitioning temperature PT comprised between 400° C. and 480° C. and maintaining the sheet at this partitioning temperature PT for a partitioning time Pt comprised between 50 s and 250 s,
hot-dip coating the sheet at a temperature less than 515° C.,
cooling the coated sheet down to the room temperature,
the steel sheet having a microstructure consisting of, in surface fraction: between 3% and 15% of retained austenite, at least 30% of tempered martensite, at most 5% of fresh martensite, at most 35% of bainite, the sum of the surface fractions of tempered martensite, fresh martensite and bainite being comprised between 55% and 92%, and between 5% and 35% of ferrite.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
An installation for continuous hot-dip coating of a metal strip is provided. The installation includes a tank containing a bath of molten metal, a metal strip running through the bath and a confined wiping device. The confined wiping device includes at least two wiping nozzles placed on each side of a path of the strip after the strip has left the bath of molten metal. Each nozzle has at least one gas outlet orifice and an upper face. The confined wiping device also includes a confinement box adjacent each upper face. The confinement boxes are open on a face which faces the strip. Each box includes at least one upper part and two lateral parts.
C23C 2/16 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergé; Appareils à cet effet Élimination de l'excès des revêtements fondus; Commande ou régulation de l'épaisseur du revêtement en utilisant des fluides sous pression, p.ex. par des lames d'air
70.
Cold rolled and annealed steel sheet and method of manufacturing the same
A cold rolled and annealed steel sheet, made of a steel having a composition including, by weight percent
C: 0.03-0.18%
Mn: 6.0-11.0%
Al: 0.2-3%
Mo: 0.05-0.5%
B: 0.0005-0.005%
S≤0.010%
P≤0.020%
N≤0.008%
and including optionally one or more of the following elements, in weight percentage:
Si≤1.20%
Ti≤0.050%
Nb≤0.050%
Cr≤0.5%
V≤0.2%
the remainder of the composition being iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure including, in surface fraction,
from 30% to 55% of retained austenite,
from 45% to 70% of ferrite,
less than 5% of fresh martensite
a carbon [C]A and manganese [Mn]A content in austenite, expressed in weight percent, satisfying
A cold rolled and annealed steel sheet, made of a steel having a composition including, by weight percent
C: 0.03-0.18%
Mn: 6.0-11.0%
Al: 0.2-3%
Mo: 0.05-0.5%
B: 0.0005-0.005%
S≤0.010%
P≤0.020%
N≤0.008%
and including optionally one or more of the following elements, in weight percentage:
Si≤1.20%
Ti≤0.050%
Nb≤0.050%
Cr≤0.5%
V≤0.2%
the remainder of the composition being iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure including, in surface fraction,
from 30% to 55% of retained austenite,
from 45% to 70% of ferrite,
less than 5% of fresh martensite
a carbon [C]A and manganese [Mn]A content in austenite, expressed in weight percent, satisfying
[C]A*[Mn]A/((0.1+C %2)*(Mn %+2))≥1.10
and an inhomogeneous repartition of manganese characterized by a manganese distribution with a slope above or equal to −30.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 6/00 - Traitement thermique des alliages ferreux
71.
HOT-ROLLED AND COATED STEEL SHEET FOR HOT-STAMPING, HOT-STAMPED COATED STEEL PART AND METHODS FOR MANUFACTURING THE SAME
A method for manufacturing a hot-rolled and coated steel sheet having a thickness between 1.8 mm and 5 mm. The method contains the steps of: providing a semi-product having a composition containing: 0.04%≤C≤0.38%, 0.40%≤Mn≤3%, 0.005%≤Si≤0.70%, 0.005%≤Al≤0.1%, 0.001%≤Cr≤2%, 0.001%≤Ni≤2%, 0.001%≤Ti≤0.2%, Nb≤0.1%, B≤0.010%, 0.0005%≤N≤0.010%, 0.0001%≤S≤0.05%, 0.0001%≤P≤0.1%, Mo≤0.65%, W≤0.30%, Ca≤0.006%, hot-rolling with a final rolling temperature FRT, to obtain a hot-rolled steel product having a thickness between 1.8 mm and 5 mm, then cooling down to a coiling temperature Tcoil satisfying: 450° C.≤Tcoil≤Tcoilmax with Tcoilmax=650−140×fγ, Tcoilmax being expressed in degrees Celsius and fγ designating the austenite fraction just before the coiling, and coiling to obtain a hot-rolled steel substrate, pickling and coating the hot-rolled steel substrate with Al or an Al alloy by continuous hot-dipping in a bath, to obtain a hot-rolled and coated steel sheet containing a hot-rolled steel sheet and an Al or an Al alloy coating, having a thickness between 10 and 33 μm, on each side of the hot-rolled steel sheet.
A galvannealed steel sheet having a steel substrate coated with a first alloy layer with iron and nickel directly topped by a second alloy layer based on zinc, the first and second alloyed layers being alloyed through diffusion such that the second alloy layer includes from 5 to 15 wt.% of iron, from 0 to 15 wt.% of nickel, a balance being zinc.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
The present invention relates to a method for the manufacture of a hot-dip coated steel sheet coated with a zinc or an aluminum based coating including the provision of a specific steel sheet, a recrystallization annealing with specific heating, soaking and cooling sub-steps using an inert gas and a hot-dip coating; the hot dip coated steel sheet and the use of the hot-dip coated steel sheet.
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
C23C 2/28 - Post-traitement thermique, p.ex. par traitement dans un bain d'huile
C21D 9/00 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet
74.
Steel sheet having excellent toughness, ductility and strength, and manufacturing method thereof
A cold-rolled and heat treated steel sheet, has a composition comprising 0.1%≤C≤0.4%, 3.5%≤Mn≤8.0%, 0.1%≤Si≤1.5%, Al≤3%, Mo≤0.5%, Cr≤1%, Nb≤0.1%, Ti≤0.1%, V≤0.2%, B≤0.004%, 0.002%≤N≤0.013%, S≤0.003%, P≤0.015%. The structure consists of, in surface fraction: between 8 and 50% of retained austenite, at most 80% of intercritical ferrite, the ferrite grains, if any, having an average size of at most 1.5 μm, and at most 1% of cementite, the cementite particles having an average size lower than 50 nm, martensite and/or bainite.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
A cold rolled and galvannealed steel sheet having a composition including, by weight percent: C 0.15-0.25%, Mn 2.4-3.5%, Si 0.30-0.90%, Cr 0.30-0.70%, Mo 0.05-0.35%, Al 0.001-0.09%, Ti 0.01-0.06, B 0.0010-0.0040%, Nb 0.01-0.05%, P≤0.020%, S≤0.010% and N≤0.008%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, and having a microstructure consisting of, in surface fraction, between 80% and 90% of martensite, the balance being ferrite and bainite.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
76.
COLD ROLLED HEAT TREATED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF
A cold rolled and heat treated steel sheet having a composition with the following elements, expressed in percentage by weight:0.10%≤Carbon≤0.5%, 1%≤Manganese≤3.4%, 0.5%≤Silicon≤2.5%, 0.03%≤Aluminum≤1.5%, 0%≤Sulfur≤0.003% 0.002%≤Phosphorus≤0.02%, 0%≤Nitrogen≤0.01% and can contain one or more of the following optional elements 0.05%≤Chromium≤1%, 0.001%≤Molybdenum≤0.5%, 0.001%≤Niobium≤0.1%, 0.001%≤Titanium≤0.1%, 0.01%≤Copper≤2%, 0.01%≤Nickel≤3%, 0.0001%≤Calcium≤0.005%, 0%≤Vanadium≤0.1%, 0%≤Boron≤0.003%, 0%≤Cerium≤0.1%, 0%≤Magnesium≤0.010%, 0%≤Zirconium≤0.010% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet having in area fraction, 10 to 30% Residual Austenite, 10 to 40% Bainite, 5% to 50% Annealed Martensite, 1% to 20% Quenched Martensite and less than 30% Tempered Martensite, wherein the cumulated amounts of Bainite and Residual Austenite is more than or equal to 25%.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
The present invention relates to a method for the manufacture of a coated steel sheet comprising the following successive steps: A. the coating of the steel sheet with a first coating consisting of nickel and having a thickness between 600 nm and 1400 nm, the steel sheet having the following composition in weight: 0.10
An apparatus (20) for measuring internal gas pressure of a coke oven (31) including a guide (24) receiving at least three pressure probes (21,22,23) each connected to a pressure sensor (61,62,63), wherein, said guide (24) has a circular cross section then forming a tubular guide (24). method (70) for manufacturing the apparatus is also provided. A coke oven (31) including at least one hole (301) through which the above apparatus (20) is inserted horizontally such that a front part of each of the three pressure probes (21,22,23) is inside the coke oven (31) and a rear part of each of the three pressure probes (21,22,23) is outside the coke oven (31).
G01L 19/00 - MESURE DES FORCES, DES CONTRAINTES, DES COUPLES, DU TRAVAIL, DE LA PUISSANCE MÉCANIQUE, DU RENDEMENT MÉCANIQUE OU DE LA PRESSION DES FLUIDES - Détails ou accessoires des appareils pour la mesure de la pression permanente ou quasi permanente d'un milieu fluent dans la mesure où ces détails ou accessoires ne sont pas particuliers à des types particuliers de manomètres
G01K 1/14 - Supports; Dispositifs de fixation; Dispositions pour le montage de thermomètres en des endroits particuliers
A coated metal sheet includes a steel substrate and a coating on at least one surface of the steel substrate. The coating includes between 0.2 and 0.7% by weight of Al, with a remainder of the metal coating being Zn and inevitable impurities. The coated metal sheet was subjected to a skin pass operation after coating. An outer surface of the metal coating has a waviness Wa0.8 of less than or equal to 0.55 μm.
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c. à d. non caractérisé par le procédé de revêtement
C23C 2/04 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergé; Appareils à cet effet caractérisé par le matériau de revêtement
B32B 15/20 - Produits stratifiés composés essentiellement de métal comportant de l'aluminium ou du cuivre
B32B 15/04 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 7/02 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 7/13 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à chaud
C21D 7/00 - Modification des propriétés physiques du fer ou de l'acier par déformation
C21D 8/00 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique
C21D 7/04 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid de la surface
B32B 15/18 - Produits stratifiés composés essentiellement de métal comportant du fer ou de l'acier
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C23C 2/02 - Pré-traitement du matériau à revêtir, p.ex. pour le revêtement de parties déterminées de la surface
C23C 2/16 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergé; Appareils à cet effet Élimination de l'excès des revêtements fondus; Commande ou régulation de l'épaisseur du revêtement en utilisant des fluides sous pression, p.ex. par des lames d'air
C23C 2/34 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergé; Appareils à cet effet caractérisés par la forme du matériau à traiter
A sol composition for producing dielectric layers on a metallic substrate including 10 to 30%, by weight of the sol composition, of a precursor including a trialkoxysilane, 10 to 40%, by weight of the sol composition, of titanium dioxide particles whose median size is below 500 nm, 4.5 to 36%, by weight of the sol composition, of silica particles whose particle size distribution D90 is below 100 nm, 5 to 15%, by weight of the sol composition, of a solvent capable of making the precursor miscible in water, 0.1 to 2%, by weight of the sol composition, of an acidic catalyst, the remainder being water.
C23C 18/12 - Revêtement chimique par décomposition soit de composés liquides, soit de solutions des composés constituant le revêtement, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement; Dépôt par contact par décomposition thermique caractérisée par le dépôt sur des matériaux inorganiques, autres que des matériaux métalliques
H01L 31/0392 - Dispositifs à semi-conducteurs sensibles aux rayons infrarouges, à la lumière, au rayonnement électromagnétique d'ondes plus courtes, ou au rayonnement corpusculaire, et spécialement adaptés, soit comme convertisseurs de l'énergie dudit rayonnement e; Procédés ou appareils spécialement adaptés à la fabrication ou au traitement de ces dispositifs ou de leurs parties constitutives; Leurs détails caractérisés par leurs corps semi-conducteurs caractérisés par leur structure cristalline ou par l'orientation particulière des plans cristallins comprenant des films minces déposés sur des substrats métalliques ou isolants
A process for manufacturing an additively-manufactured part from a metal powder having a composition having the following elements, expressed in content by weight: 6%≤Ni≤14%, 5%≤Cr≤10%, 0.5%≤Si≤2.5%, 0.5%≤Ti≤2%, C≤0.04% and optionally containing 0.5%≤Cu≤2%, the balance being Fe and unavoidable impurities resulting from the elaboration, the metal powder having a microstructure including in area fraction more than 98% of a body-centered cubic crystalline phase, the process having a step during which at least a part of the metal powder is melted in an atmosphere substantially composed of an inert gas other than Argon or of a combination of inert gases other than Argon.
A method of production of a cold rolled and heat treated steel sheet having the following steps: providing a cold rolled steel sheet with a composition with the following elements, expressed in percent by weight: 0.10%≤carbon≤0.6%; 4%≤manganese≤20%; 5%≤aluminum≤15%; 0≤silicon≤2% aluminium+silicon+nickel≥6.5%; and optionally at least one of certain optional elements; a remainder being composed of iron and unavoidable impurities caused by processing; heating the cold rolled steel sheet up to a soaking temperature between 750 and 950° C. during less than 600 seconds, then cooling the sheet down to room temperature; and reheating the steel sheet to a soaking temperature of 150° C. to 600° C. during 10 s to 1000 h, then further cooling the sheet.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
A steel sheet is provided with a coating having at least one layer of zinc and a top layer of paint applied by cataphoresis. The zinc layer is deposited by a jet vapor deposition process in a deposition chamber maintained at a pressure between 6·10−2 mbar and 2·10−1 mbar. A fabrication method and an installation are also provided.
C23C 14/28 - Evaporation sous vide par énergie éléctromagnétique ou par rayonnement corpusculaire
B32B 15/00 - Produits stratifiés composés essentiellement de métal
C25D 13/02 - Revêtement électrophorétique caractérisé par le procédé avec des matières inorganiques
C23C 14/16 - Matériau métallique, bore ou silicium sur des substrats métalliques, en bore ou en silicium
C23C 14/56 - Appareillage spécialement adapté au revêtement en continu; Dispositifs pour maintenir le vide, p.ex. fermeture étanche
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
A protective element (1) named shield element for a battery pack of an electric or hybrid vehicle, wherein the protective element (1) includes a securing device (2) configured to removably secure the shield element (1) both to the battery pack and to a body (11) of the vehicle.
B60L 50/64 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries - Détails de construction des batteries spécialement adaptées aux véhicules électriques
B60L 58/26 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques pour la surveillance et la commande des batteries pour la commande de la température des batteries par refroidissement
B60K 1/04 - Agencement ou montage des ensembles de propulsion électriques des dispositifs d'emmagasinage de l'énergie électrique pour la propulsion
H01M 50/24 - Montures; Boîtiers secondaires ou cadres; Bâtis, modules ou blocs; Dispositifs de suspension; Amortisseurs; Dispositifs de transport ou de manutention; Supports caractérisés par les propriétés physiques des boîtiers ou des bâtis, p.ex. dimensions adaptés pour protéger les batteries de leur environnement, p.ex. de la corrosion
H01M 50/242 - Montures; Boîtiers secondaires ou cadres; Bâtis, modules ou blocs; Dispositifs de suspension; Amortisseurs; Dispositifs de transport ou de manutention; Supports caractérisés par les propriétés physiques des boîtiers ou des bâtis, p.ex. dimensions adaptés pour protéger les batteries contre les vibrations, les collisions ou le gonflement
A hot rolled steel sheet having a composition including the following elements, 0.18%≤Carbon≤0.3%, 1.8%≤Manganese≤4.5%. 0.8%≤Silicon≤2%,0 001%≤Aluminum ≤0.2%, 0.1%≤Molybdenum≤1%, 0.001%≤Titanium≤0.2%, 0.0001%≤Boron≤0.01%, 0%≤Phosphorus≤0.09%, 0%≤Sulfur≤0.09%.,0%≤Nitrogen≤0.09%, 0%≤Chromium≤0.5%, 0%≤Niobium≤0.1%, 0%≤Vanadium≤0.5%, 0%≤Nickel≤1%, 0%≤Copper≤1%, 0%≤Calcium≤0.005%, 0%≤Magnesium≤0.0010% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet including in area fraction, of at least 70% martensite, 8% to 25% residual austenite, wherein the shape factor of the residual austenite is between 4 and 12.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
A metal powder for additive manufacturing having a composition including the following elements, expressed in content by weight: 0.01%≤C≤0.2%, 4.6%≤Ti≤10%, (0.45×Ti)−0.22%≤B≤(0.45×Ti)+0.70%, S≤0.03%, P≤0.04%, N≤0.05%, O≤0.05% and optionally containing: Si≤1.5%, Mn≤3%, Al≤1.5%, Ni≤1%, Mo≤1%, Cr≤3%, Cu≤1%, Nb≤0.1%, V≤0.5% and including eutectic precipitates of TiB2 and Fe2B, the balance being Fe and unavoidable impurities resulting from the elaboration, the volume percentage of TiB2 being equal or more than 10% and the mean bulk density of the powder being 7.50 g/cm3 or less. A manufacturing method by atomization is also provided.
B22F 9/08 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau liquide par coulée, p.ex. à travers de petits orifices ou dans l'eau, par atomisation ou pulvérisation
B22F 10/25 - Dépôt direct de particules métalliques, p.ex. dépôt direct de métal [DMD] ou mise en forme par laser [LENS]
B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
A spot welded joint of at least two steel sheets is provided. At least one of the steel sheets presents yield strength above or equal to 600 MPa, an ultimate tensile strength above or equal to 1000 MPa, uniform elongation above or equal to 15%. The base metal chemical composition includes 0.05≤C≤0.21%, 4.0≤Mn≤7.0%, 0.5≤Al≤3.5%, Si≤2.0%, Ti≤0.2%, V≤0.2%, Nb≤0.2%, P≤0.025%, B≤0.0035%, and the spot welded joint contains a molten zone microstructure containing more than 0.5% of Al and containing a surface fraction of segregated areas lower than 1%, said segregated areas being zones larger than 20 μm2 and containing more than the steel nominal phosphorus content.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C22C 38/12 - Alliages ferreux, p.ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C21D 9/50 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour joints de soudure
B22D 11/00 - Coulée continue des métaux, c. à d. en longueur indéfinie
C21D 6/00 - Traitement thermique des alliages ferreux
A reinforcement frame (1) for a battery pack (2) of an electric or hybrid vehicle (37), the battery pack including a plurality of battery cells lying on and secured to a shield element, the reinforcement frame including at least: a reinforcement frame fastening portion (3) provided to be secured to both the battery pack and the body of the vehicle, and a reinforcement frame hollow portion (4) provided to surround at least the battery cells.
H01M 50/249 - Montures; Boîtiers secondaires ou cadres; Bâtis, modules ou blocs; Dispositifs de suspension; Amortisseurs; Dispositifs de transport ou de manutention; Supports spécialement adaptés aux aéronefs ou aux véhicules, p.ex. aux automobiles ou aux trains
H01M 50/262 - Montures; Boîtiers secondaires ou cadres; Bâtis, modules ou blocs; Dispositifs de suspension; Amortisseurs; Dispositifs de transport ou de manutention; Supports avec des moyens de fixation, p.ex. des serrures
B60L 50/64 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries - Détails de construction des batteries spécialement adaptées aux véhicules électriques
B60L 50/60 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries
89.
Pre-coated steel sheet comprising an additional coating for increasing the mechanical strength of the weld metal zone of a welded steel part prepared from said pre-coated sheet.
A pre-coated steel sheet wherein at least a region at the periphery (7) of at least one (6a,6b) of the opposite faces (6a,6b) of said pre-coated sheet (1,1′) is coated with an additional coating (8) selected for increasing the vapor pressure between the pre-coating (2) and said additional coating (8) during a laser welding method up to a critical pressure at which the pre-coating (2) is ejected away from the weld (14). Preferably, the vaporization temperature of the additional coating (8) is greater than the vaporization temperature of the pre-coating (2) and the additional coating includes gammagene elements like carbon and/or nickel. A steel part obtained by laser welding, preferably butt laser welding, of at least a first and second pre-coated steel sheet (1,1′) as above indicated is also provided.
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
90.
Hot rolled plate or forging of an austenitic steel
A hot rolled plate or forging of an austenitic steel not susceptible to relaxation cracking is provided. The hot rolled plate or austenitic steel includes a composition having in percentages by weight: 0.019%≤C≤0.030%, 0.5%≤Mn≤2%, 0.1%≤Si≤0.75%, Al≤0.25%, 18%≤Cr≤25%, 14%≤Ni≤17%, 1.5%≤Mo≤3%, 0.001%≤B≤0.008%, 0.25%≤V≤0.35%, 0.23%≤N≤0.27%, the balance being iron and unavoidable impurities, Ni(eq.)≥1.11 Cr(eq.)−8.24, Cr(eq)=Cr+Mo+1.5Si+5V+3Al+0.02, Ni(eq)=Ni+30C+x(N−0.045)+0.87; x=30 for N≤0.2, x=22 for 0.2
A steel sheet has a composition comprising 0.060%≤C≤0.085%, 1.8%≤Mn≤2.0%, 0.4%≤Cr≤0.6%, 0.1%≤Si≤0.5%, 0.010%≤Nb≤0.025%, 3.42N≤Ti≤0.035%, 0≤Mo≤0.030%, 0.020%≤Al≤0.060%, 0.0012%≤B≤0.0030%, S≤0.005%, P≤0.050%, 0.002%≤N≤0.007% and optionally 0.0005%≤Ca≤0.005%, the remainder of the composition being iron and unavoidable impurities. The microstructure consists of 34% to 80% bainite, 10% to 16% martensite, and 10% to 50% of ferrite. The surface fraction of unrecrystallized ferrite, with respect to the whole structure, is of less than 30%. The martensite consists of self-tempered martensite and fresh martensite, the surface fraction of self-tempered martensite being comprised between 4% and 10%.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
A heat treated and cold rolled steel sheet having a composition including of the following elements 0.09%≤Carbon≤0.15%, 1.8%≤Manganese≤2.5%, 0.2%≤Silicon≤0.7%, 0.01%≤Aluminum≤0.1%, 0%≤Phosphorus≤0.09%, 0%≤Sulfur≤0.09%, 0%≤Nitrogen≤0.09%, 0%≤Niobium≤0.1%, 0%≤Titanium≤0.1%, 0%≤Chromium≤1%, 0%≤Molybdenum≤1%, 0%≤Vanadium≤0.1%, 0%≤Calcium≤0.005%, 0%≤Boron≤0.01%, 0%≤Cerium≤0.1%, 0%≤Magnesium≤0.05%, 0%≤Zirconium≤0.05% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet comprising in area fraction, 65 to 85% Tempered Martensite, 0% to 5% Residual Austenite and a cumulative presence of Ferrite and Bainite between 15 and 35%.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
A heat treated and cold rolled steel sheet having a composition including of the following elements 0.09%≤Carbon≤0.15%, 1.8%≤Manganese≤2.5%, 0.2%≤Silicon≤0.7%, 0.01%≤Aluminum≤0.1%, 0%≤Phosphorus≤0.09%, 0%≤Sulfur≤0.09%, 0%≤Nitrogen≤0.09%, 0%≤Niobium≤0.1%, 0%≤Titanium≤0.1%, 0%≤Chromium≤1%, 0%≤Molybdenum≤1%, 0%≤Vanadium≤0.1%, 0%≤Calcium≤0.005%, 0%≤Boron≤0.01%, 0%≤Cerium≤0.1%, 0%≤Magnesium≤0.05%, 0%≤Zirconium≤0.05% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet comprising in area fraction, 65 to 85% Tempered Martensite, 0% to 5% Residual Austenite and a cumulative presence of Ferrite and Bainite between 15 and 35%.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
94.
Hot rolled and heat-treated steel sheet and method of manufacturing the same
A hot rolled and heat-treated steel sheet having a composition including, by weight percent C 0.12-0.25% Mn 3.0-8.0%, Si 0.70-1.50%, Al 0.3-1.2%, B 0.0002-0.004%, S≤0.010%, P≤0.020%, N≤0.008%, the remainder of the composition being iron and unavoidable impurities resulting from the smelting, and having a microstructure consisting of, in surface fraction: between 5% and 45% of ferrite, between 25% and 85% of partitioned martensite, the partitioned martensite having a carbides density less than 2×106 /mm2, between 10% and 30% of retained austenite, less than 8% of fresh martensite, a part of the fresh martensite being combined with retained austenite in the shape of martensite-austenite islands in total surface fraction less than 10%, and a pancaking index lower than 5.
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
B21B 1/22 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilés; Séquence des opérations dans les trains de laminoirs; Installation d'une usine de laminage, p.ex. groupement de cages; Succession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 6/00 - Traitement thermique des alliages ferreux
A metal powder for additive manufacturing having a composition including the following elements, expressed in content by weight: 0.01%≤C≤0.2%, 2.5%≤Ti≤10%, (0.45×Ti)−1.35%≤B≤(0.45×Ti)+0.70%, S≤0.03%, P≤0.04%, N≤0.05%, O≤0.05% and optionally containing: Si≤1.5%, Mn≤3%, Al≤1.5%, Ni≤1%, Mo≤1%, Cr≤3%, Cu≤1%, Nb≤0.1%, V≤0.5% and including eutectic precipitates of TiB2 and optionally of Fe2B, the balance being Fe and unavoidable impurities resulting from the elaboration, the metal powder having a mean roundness of at least 0.70. The invention also relates to its manufacturing method by argon atomization.
B22F 1/052 - Poudres métalliques caractérisées par la dimension ou la surface spécifique des particules caractérisées par un mélange de particules de dimensions différentes ou par la distribution granulométrique des particules
C22C 1/03 - Fabrication des alliages non ferreux par fusion utilisant des alliages-mères
C22C 38/58 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C22C 38/54 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du bore
C22C 38/50 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/48 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/46 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/44 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/42 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du cuivre
A hot rolled steel sheet having a composition including, by weight percent:C:0.10-0.25%, Mn:3.5-5.0%, Si:0.80-1.60%, B:0.0003-0.004%, S≤0.010%, P≤0.020%, N≤0.008% the remainder of the composition being iron and unavoidable impurities resulting from the smelting, and having a microstructure consisting of, in surface fraction: between 50% and 80% of lath bainite, lower than 30% of granular bainite, the rest being martensite, martensite-austenite islands and austenite films, and having less than 20% of martensite and M-A islands having the multiplication of the maximum length Lmax of the grain by the maximum width Wmax of the grain higher than 1 μm2.
C22C 38/38 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
97.
METHOD FOR PRODUCING HIGH-STRENGTH STEEL PARTS WITH IMPROVED DUCTILITY, AND PARTS OBTAINED BY SAID METHOD
A rolled steel sheet, for press hardening is provided, having a chemical composition where Ti/N>3.42, and the carbon, manganese, chromium and silicon contents satisfy:
A rolled steel sheet, for press hardening is provided, having a chemical composition where Ti/N>3.42, and the carbon, manganese, chromium and silicon contents satisfy:
2.6
C
+
Mn
5.3
+
Cr
13
+
Si
15
≥
1.1
%
.
A rolled steel sheet, for press hardening is provided, having a chemical composition where Ti/N>3.42, and the carbon, manganese, chromium and silicon contents satisfy:
2.6
C
+
Mn
5.3
+
Cr
13
+
Si
15
≥
1.1
%
.
The sheet has a nickel content Nisurf at any point of the steel in the vicinity of the surface over a depth Δ, such that: Nisurf>Ninom, Ninom denoting the nominal nickel content of the steel, and such that, Nimax denoting the maximum nickel content within Δ:
A rolled steel sheet, for press hardening is provided, having a chemical composition where Ti/N>3.42, and the carbon, manganese, chromium and silicon contents satisfy:
2.6
C
+
Mn
5.3
+
Cr
13
+
Si
15
≥
1.1
%
.
The sheet has a nickel content Nisurf at any point of the steel in the vicinity of the surface over a depth Δ, such that: Nisurf>Ninom, Ninom denoting the nominal nickel content of the steel, and such that, Nimax denoting the maximum nickel content within Δ:
(
Ni
max
+
Ni
nom
)
2
×
(
Δ
)
≥
0.6
,
A rolled steel sheet, for press hardening is provided, having a chemical composition where Ti/N>3.42, and the carbon, manganese, chromium and silicon contents satisfy:
2.6
C
+
Mn
5.3
+
Cr
13
+
Si
15
≥
1.1
%
.
The sheet has a nickel content Nisurf at any point of the steel in the vicinity of the surface over a depth Δ, such that: Nisurf>Ninom, Ninom denoting the nominal nickel content of the steel, and such that, Nimax denoting the maximum nickel content within Δ:
(
Ni
max
+
Ni
nom
)
2
×
(
Δ
)
≥
0.6
,
and such that:
A rolled steel sheet, for press hardening is provided, having a chemical composition where Ti/N>3.42, and the carbon, manganese, chromium and silicon contents satisfy:
2.6
C
+
Mn
5.3
+
Cr
13
+
Si
15
≥
1.1
%
.
The sheet has a nickel content Nisurf at any point of the steel in the vicinity of the surface over a depth Δ, such that: Nisurf>Ninom, Ninom denoting the nominal nickel content of the steel, and such that, Nimax denoting the maximum nickel content within Δ:
(
Ni
max
+
Ni
nom
)
2
×
(
Δ
)
≥
0.6
,
and such that:
(
Ni
max
-
Ni
nom
)
Δ
≥
0.01
A rolled steel sheet, for press hardening is provided, having a chemical composition where Ti/N>3.42, and the carbon, manganese, chromium and silicon contents satisfy:
2.6
C
+
Mn
5.3
+
Cr
13
+
Si
15
≥
1.1
%
.
The sheet has a nickel content Nisurf at any point of the steel in the vicinity of the surface over a depth Δ, such that: Nisurf>Ninom, Ninom denoting the nominal nickel content of the steel, and such that, Nimax denoting the maximum nickel content within Δ:
(
Ni
max
+
Ni
nom
)
2
×
(
Δ
)
≥
0.6
,
and such that:
(
Ni
max
-
Ni
nom
)
Δ
≥
0.01
and the surface density of all of the particles Di , and the surface density of the particles D(>2 μm) larger than 2 micrometers satisfy, at least to a depth of 100 micrometers in the vicinity of the surface of said sheet:
A rolled steel sheet, for press hardening is provided, having a chemical composition where Ti/N>3.42, and the carbon, manganese, chromium and silicon contents satisfy:
2.6
C
+
Mn
5.3
+
Cr
13
+
Si
15
≥
1.1
%
.
The sheet has a nickel content Nisurf at any point of the steel in the vicinity of the surface over a depth Δ, such that: Nisurf>Ninom, Ninom denoting the nominal nickel content of the steel, and such that, Nimax denoting the maximum nickel content within Δ:
(
Ni
max
+
Ni
nom
)
2
×
(
Δ
)
≥
0.6
,
and such that:
(
Ni
max
-
Ni
nom
)
Δ
≥
0.01
and the surface density of all of the particles Di , and the surface density of the particles D(>2 μm) larger than 2 micrometers satisfy, at least to a depth of 100 micrometers in the vicinity of the surface of said sheet:
Di+6.75 D(>2 μm)<270
A rolled steel sheet, for press hardening is provided, having a chemical composition where Ti/N>3.42, and the carbon, manganese, chromium and silicon contents satisfy:
2.6
C
+
Mn
5.3
+
Cr
13
+
Si
15
≥
1.1
%
.
The sheet has a nickel content Nisurf at any point of the steel in the vicinity of the surface over a depth Δ, such that: Nisurf>Ninom, Ninom denoting the nominal nickel content of the steel, and such that, Nimax denoting the maximum nickel content within Δ:
(
Ni
max
+
Ni
nom
)
2
×
(
Δ
)
≥
0.6
,
and such that:
(
Ni
max
-
Ni
nom
)
Δ
≥
0.01
and the surface density of all of the particles Di , and the surface density of the particles D(>2 μm) larger than 2 micrometers satisfy, at least to a depth of 100 micrometers in the vicinity of the surface of said sheet:
Di+6.75 D(>2 μm)<270
Di and D(>2 μm) being expressed as number of particles per square millimeter, and said particles denoting all the oxides, sulfides, and nitrides, either pure or combined such as oxysulfides and carbonitrides, present in the steel matrix.
C21D 9/48 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles tôles embouties
C22C 38/44 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/54 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du bore
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 1/673 - Dispositifs pour trempe pour la trempe en coquille
Method for producing a precoated steel blank including the successive steps of: —providing a precoated steel strip including a steel substrate having, on at least one of its main faces, a precoating, the precoating including an intermetallic alloy layer and a metallic layer extending atop said intermetallic alloy layer, the metallic layer being a layer of aluminum, a layer of aluminum alloy or a layer of aluminum-based alloy, —laser cutting the precoated steel strip in order to obtain at least one precoated steel blank, the precoated steel blank including a laser cut edge surface resulting from the laser cutting operation, the laser cut edge surface including a substrate portion and a precoating portion, wherein the laser cutting is carried out in such a way that the substrate portion of the laser cut edge directly resulting from the cutting operation has an oxygen content greater than or equal to 15% in weight.
A facade element (1D), to be fastened to a building structure with other such facade elements (1A, 1B, 1C) to build one of the external walls of the building. The facade element includes an assembly of sandwich panels fastened to a metal framework, an upper waterproofing membrane that covers up an upper edge of the facade element, and a lower waterproofing membrane (5D) fixed to the inner face of the facade element. The lower waterproofing membrane extends beyond a lower edge of the facade element, up to an outer face of another facade element (1B) placed below. Both the upper and lower waterproofing membranes have overhanging parts (51D), extending beyond the left (35D) and right edges of the facade element. A building facade, and to a process for the assembling of a building facade is also provided.
E04C 2/292 - Eléments de construction de relativement faible épaisseur pour la construction de parties de bâtiments, p.ex. matériaux en feuilles, dalles ou panneaux caractérisés par des matériaux spécifiés composés de matériaux couverts par plusieurs des groupes , , ou de matériaux couverts par un de ces groupes avec un matériau non spécifié dans l'un de ces groupes au moins un des matériaux étant isolant composés de matériau isolant et de tôle
A metal powder having a composition including the following elements, expressed in content by weight: 6.5%≤Si≤10%, 4.5%≤Nb≤10%, 0.2%≤B≤2.0%, 0.2%≤Cu≤2.0%, C≤2% and optionally containing Ni≤10 wt % and/or Co≤10 wt % and/or Cr≤7 wt % and/or Zr as a substitute for any part of Nb on a one-to-one basis and/or Mo as a substitute for any part of Nb on a one-to-one basis and/or P as a substitute for any part of Si on a one-to-one basis, the balance being Fe and unavoidable impurities resulting from the elaboration, the metal powder having a microstructure including at least 5% in area fraction of an amorphous phase, the balance being made of crystalline ferritic phases with a grain size below 20 μm and possible precipitates, the metal powder having a mean sphericity SPHT of at least 0.80.
B22F 1/052 - Poudres métalliques caractérisées par la dimension ou la surface spécifique des particules caractérisées par un mélange de particules de dimensions différentes ou par la distribution granulométrique des particules
C22C 38/44 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/52 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du cobalt
C22C 38/54 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du bore
C22C 38/56 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et plus de 1,7% en poids de carbone
brevets
