By using a forming die having a fixed die and a movable die moving along a parting surface on the fixed die and by moving the movable die along the parting surface, to press and hold a sintered part between the movable die and the fixed die, to form a cavity around the sintered part except parts which abut on the fixed die and the movable die by the forming die, and to fill the cavity with melted material which becomes an exterior part, so that the sintered part and the exterior part are integrated by insert molding.
B29C 45/14 - Moulage par injection, c. à d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule fermé; Appareils à cet effet en incorporant des parties ou des couches préformées, p.ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
B22F 7/08 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés avec une ou plusieurs parties non faites à partir de poudre
F16C 33/14 - Procédés particuliers de fabrication; Rodage
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
2.
INSERT SINTERED PART AND MANUFACTURING METHOD FOR SAME
By using a forming die having a fixed die and a movable die moving along a parting surface on the fixed die and by moving the movable die along the parting surface, to press and hold a sintered part between the movable die and the fixed die, to form a cavity around the sintered part except parts which abut on the fixed die and the movable die by the forming die, and to fill the cavity with melted material which becomes an exterior part, so that the sintered part and the exterior part are integrated by insert molding.
B29C 45/14 - Moulage par injection, c. à d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule fermé; Appareils à cet effet en incorporant des parties ou des couches préformées, p.ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
B22F 7/08 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés avec une ou plusieurs parties non faites à partir de poudre
A method for manufacturing a Cu—Ni—Al-based sintered alloy according to the present invention includes: adding pure Al powder to alloy powder containing Cu, Ni, and Al and mixing them to produce raw material powder with a composition ratio of Ni: 1% to 15% by mass, Al: 1.9% to 12% by mass, and a Cu balance containing inevitable impurities; compacting the raw material powder to form a green compact; and sintering the green compact in a mixture gas atmosphere of hydrogen gas and nitrogen gas that contains 3% by volume or more of hydrogen gas.
A heat-resistant sintered sliding member according to the present invention has a structure in which a lubrication phase is dispersed in a matrix, in which an entire composition of the sliding member is composed of a composition containing, by mass %, Cr: 18% to 35%, Mo: 0.3% to 15%, Ni: 0% to 30%, Si: 0.5% to 6%, S: 0.2% to 4.0%, P: 0% to 1.2%, B: 0% to 0.8%, and a Fe balance containing inevitable impurities, in which the matrix is a Fe—Cr—Mo—Si-based matrix or a Fe—Cr—Mo—Ni—Si-based matrix, the lubrication phase contains chromium sulfide, and a porosity of an entire sliding member is 2.0% or less.
A sintered component forming step is for forming a sintered component by powder molding. An insert forming step is for forming a sintered insert component in which an exterior component is integrated on an outer peripheral portion of the sintered component. One or more grooves or ridges are formed on an outer peripheral portion of a region except for one end portion of the sintered component in the sintered component forming step. The insert forming step includes a step for bringing the outer peripheral portion of the end portion into contact with an inner peripheral surface of an insert forming mold along a circumferential direction and covering the one or more grooves or ridges by the insert forming mold with an interval to form a cavity on an outer peripheral portion of the sintered component and a step for filling a melted material in the cavity.
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
F16C 33/14 - Procédés particuliers de fabrication; Rodage
B22F 7/08 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés avec une ou plusieurs parties non faites à partir de poudre
6.
METALLIC GLASS POWDER MAGNETIC CORE HAVING HIGH DENSITY AND HIGH SPECIFIC RESISANCE, AND METHOD FOR MANUFACTURING SAME
A metallic glass powder magnetic core which comprises a plurality of grains each comprising a soft magnetic metallic glass alloy and 1% by mass or less of an insulation film formed at each of grain boundaries among the plurality of grains, has a density ratio of 0.90 or more, an iron loss of 200 kW/m3(0.1 T/50 kHz) or less in a magnetic path cross section of 10 mm, and has specific resistance of 1×105 μΩm or more.
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
B22F 9/02 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques
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
C22C 45/02 - Alliages amorphes avec le fer comme constituant majeur
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
H01F 27/255 - Noyaux magnétiques fabriqués à partir de particules
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittage; Appareils spécialement adaptés à cet effet
7.
INSERT SINTERED PART AND MANUFACTURING METHOD FOR SAME
The present invention includes: using a forming mold that includes a fixed mold and a movable mold that moves along a parting surface with respect to the fixed mold; moving the movable mold along the parting surface, thereby pressing and holding a sintered part between the movable mold and the fixed mold; forming a cavity, using the forming mold, around a region excluding portions of the sintered part that contacts the fixed mold and the movable mold; filling the cavity with a molten material that becomes an exterior part; and integrating the sintered part and the exterior part by insert molding.
B22F 5/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser
B22F 7/08 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés avec une ou plusieurs parties non faites à partir de poudre
B29C 45/14 - Moulage par injection, c. à d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule fermé; Appareils à cet effet en incorporant des parties ou des couches préformées, p.ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
A sintered bearing includes a bearing main body which has a substantially cylindrical shape and is made of a sintered material, a through-hole being formed in a center of the bearing main body; a sealing member in a disk shape, the sealing member being configured to be disposed such that one surface side of the sealing member is in contact with the bearing main body, and an opening being formed in a center of the sealing member; and a locking member in a block shape, the locking member being configured to be in contact with at least another surface side of the sealing member and holding the sealing member between the locking member and the bearing main body.
A method for manufacturing a Cu-Ni-Al-based sintered alloy according to the present invention is characterized by comprising preparing a raw material powder including, in terms of mass% compositional ratios, 1-15% Ni and 1.9-12% Al, the remainder comprising Cu and unavoidable impurities, by adding pure Al powder to an alloy powder including Cu, Ni, and Al and mixing the powder, forming a powder compression molded body by powder compression molding using the raw material powder, and sintering the powder compression molded body in a mixed gas atmosphere of nitrogen gas and hydrogen gas including at least 3 vol% of hydrogen gas.
Provided is a bearing for a motor-type fuel injection pump. This bearing is composed of a Cu—Ni-based sintered alloy, inexpensive and has a superior corrosion resistance and abrasion resistance. The bearing contains 10 to 20% by mass of Ni, 2 to 4.5% by mass of Sn, 0.05 to 0.4% by mass of P, 2 to 7% by mass of C, and a remainder consisting of Cu and inevitable impurities. The bearing has a metal structure where Sn is uniformly dispersed and distributed in a metal matrix, and has a porosity of 7 to 17% where a free graphite is dispersed and distributed in pores.
C22C 9/06 - Alliages à base de cuivre avec le nickel ou le cobalt comme second constituant majeur
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
B22F 3/11 - Fabrication de pièces ou d'objets poreux
C22C 32/00 - Alliages non ferreux contenant entre 5 et 50% en poids d'oxydes, de carbures, de borures, de nitrures, de siliciures ou d'autres composés métalliques, p.ex. oxynitrures, sulfures, qu'ils soient soient ajoutés comme tels ou formés in situ
F16C 33/14 - Procédés particuliers de fabrication; Rodage
11.
CUTTING TOOL AND MATERIAL USED TO FORM SURFACE PROTECTIVE COATING OF SAME
Provided is a cutting tool characterized by having, on a surface of the cutting tool before cutting a material being cut, a surface protective coating containing a wear resistance improving material derived from a material added to the material being cut. Also provided are a compact and a plating raw material characterized by containing a material used as a raw material for the wear resistance improving material.
This heat-resistant sintered sliding member (1) is characterized by having a structure in which lubricating phases (3) are dispersed in a matrix phase (2), and in that: the overall composition has a composition containing 18-35% of Cr, 0.3-15% of Mo, 0-30% of Ni, 0.5-6% of Si, 0.2-4.0% of S, 0-1.2% of P and 0-0.8% of B, with the remainder comprising Fe and unavoidable impurities; the matrix phase (2) is a Fe-Cr-Mo-Si-based matrix phase or a Fe-Cr-Mo-Ni-Si-based matrix phase; the lubricating phases (3) contain chromium sulfide; and the porosity of the sliding member as a whole is 2.0% or less.
In the present invention, a sintered component such as a sintered bearing and an exterior component are integrated by insert molding without forming a film on at least one end surface of the sintered component. The present invention comprises: a sintered component forming step for forming a sintered component by powder molding; and an insert molding step for forming a sintered insert component in which an outer peripheral section of the sintered component is integrated with an exterior component, wherein in the sintered component forming step, one or more grooves or elongated projections are formed on the outer peripheral section in a region excluding at least one end portion of the sintered component, and the insert molding step includes a mold assembling step for forming a cavity in the outer peripheral section of the sintered component by causing an outer peripheral surface of the end portion to abut on an inner peripheral surface of an insert molding mold along the circumferential direction and covering the peripheries of the one or more grooves or elongated projections by the insert molding mold with spaces therebetween, and a filling step for filling, after the mold assembling step, the cavity with a molten material that is to become the exterior component.
B22F 5/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser
B22F 7/08 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés avec une ou plusieurs parties non faites à partir de poudre
B29C 45/14 - Moulage par injection, c. à d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule fermé; Appareils à cet effet en incorporant des parties ou des couches préformées, p.ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
F16C 33/14 - Procédés particuliers de fabrication; Rodage
F16C 35/02 - Supports rigides de paliers; Corps de paliers, p.ex. calottes, couvercles dans le cas de paliers à contact lisse
Provided is a novel sintered oil-impregnated bearing superior in wear resistance and cost performance under a severe use condition where the bearing collides with a shaft due to a high load and vibration, such as a condition associated with an output shaft of an electric motor installed in a vehicle and a wiper motor installed therein. The sintered oil-impregnated bearing contains: 15 to 30% by mass of Cu; 1 to 4% by mass of C; and a remainder consisting of Fe and inevitable impurities, in which a metal structure with copper being melted therein is provided at least on a bearing surface; pearlite or a pearlite with ferrite being partially scattered therein is provided in a matrix; a copper-rich phase arranged in a mesh-like manner is also provided in the matrix; and a free graphite is dispersed and distributed in the matrix as well.
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
16.
Heat-resistant sintered material having excellent high-temperature wear resistance and salt damage resistance and method for producing same
This heat-resistant sintered material has, as an overall composition, a composition including, in terms of % by mass, Cr: 15% to 30%, Ni: 8% to 30%, Si: 2.0% to 6.0%, and C: 0.5% to 2.5% with a remainder being Fe and inevitable impurities, wherein the heat-resistant sintered material has a structure in which hard phases are dispersed in a matrix, the matrix includes Fe, Cr, Ni, and Si, the hard phase includes Fe, Cr, and C, and a porosity is 2.0% or less.
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
17.
Oil-impregnated sintered bearing and production method therefor
The oil-impregnated sintered bearing of the present invention is an oil-impregnated sintered bearing having a Fe—Cu-based sintered body being impregnated with, a bearing hole being formed in the Fe—Cu-based sintered body and configured to be penetrated by and support a rotating shaft, in which an inner circumferential surface of the bearing hole includes a first region forming a central portion in a shaft direction, a second region from a first end portion of the first region to a first opening of the bearing hole, and a third region from a second end portion of the first region to a second opening of the bearing hole, and an area ratio of the Cu phase of the second region in a center along the shaft direction is 80% or more and 100% or less of an area ratio of the Cu phase of the third region in a center along the shaft direction.
An oil-impregnated sintered bearing in which a Fe—Cu-based sintered body is impregnated with a lubricant and which has a bearing hole that is configured to support a rotary shaft inserted therethrough, in which an inner circumferential surface of the bearing hole includes at least a first region including a central portion in a shaft direction and a second region forming a portion from a first end portion of the first region to a first opening of the bearing hole, and, in a friction surface of the second region, an area of a Fe phase is larger and an area of a Cu phase formed of Cu powder including Cu-based flat raw material powder is smaller than those in a friction surface of the first region.
F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
F16C 33/10 - Structures relatives à la lubrification
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
A sintered bearing comprises: a bearing sleeve that is formed of a sintered material and has a shaft hole; an annular ring-shaped seal member that is disposed such that one surface thereof comes into contact with the bearing sleeve; and a washer member that comes into contact with the other surface of the seal member on a side opposite to the one surface and is configured for the seal member to engage with the bearing sleeve. The washer member is fixed to the bearing sleeve.
An oil-impregnated sintered bearing comprises a bearing hole. In the bearing, sliding surfaces supporting an outer circumferential surface of a shaft and an oil supply surface whose diameter is larger than that of the sliding surfaces are formed on an inner circumferential surface of the bearing hole into which the shaft is inserted. The sliding surfaces and the oil supply surfaces are adjacent to each other in the axial direction of the bearing hole. A height gap “d1” between the sliding surfaces and the oil supply surface is not less than 0.01% and not more than 15% of an inner diameter of the sliding surfaces. A surface opening percentage of the sliding surfaces is not higher than 10%. A surface opening percentage of the oil supply surface is higher than 10%. An average circle-equivalent diameter of opening parts of pores on the sliding surfaces is not larger than 20 μm.
F16C 33/10 - Structures relatives à la lubrification
F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
F16C 33/14 - Procédés particuliers de fabrication; Rodage
B22F 3/16 - Compactage et frittage par des opérations successives ou répétées
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
This sintered bearing is characterized by comprising: a substantially circular cylindrical bearing body (11, 31, 41, 51, 61A, 61B, 71A, 71B, 81, 91) which has a through-hole (21, 86, 96) formed at the center thereof, and which is formed from a sintered material; a circular plate-shaped seal member (12, 82, 92) which has one surface side disposed so as to be in contact with the bearing body (11, 31, 41, 51, 61A, 61B, 71A, 71B, 81, 91) and which has an opening (23, 82a, 92a) formed at the center thereof; and a block-shaped engagement member (13, 33, 43, 53, 61A, 71A, 83, 93) which is in contact with at least the other surface side (12b) of the seal member (12, 82, 92) and which grips the seal member (12, 82, 92) between the engagement member (13, 33, 43, 53, 61A, 71A, 83, 93) and the bearing body (11, 31, 41, 51, 61A, 61B, 71A, 71B, 81, 91).
A sintered bearing exhibits a less of a hard iron alloy phase, and has an excellent wear resistance and cost performance under low-revolution and high-load use conditions. The sintered bearing contains Cu: 10 to 55% by mass, Sn: 0.5 to 7% by mass, Zn: 0 to 4% by mass, P: 0 to 0.6% by mass, C: 0.5 to 4.5% by mass and a remainder composed of Fe and inevitable impurities. An area ratio of a free graphite dispersed in a metal matrix of the bearing is 5 to 35%; an area ratio of a copper phase in the metal matrix of a bearing surface is not less than 30%; a porosity thereof is 16 to 25%; a hardness of an iron alloy phase in the matrix is Hv 65 to 200; and raw material powders employ at least one of a crystalline graphite powder and a flake graphite powder each having an average particle size of 10 to 100 μm.
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
The molding die of the invention includes: a first die having a through-hole; a second die inserted into the through-hole and capable of moving relative to the first die; and a first punch and a second punch each insertable into the through-hole. A cavity surrounded by the second die, the first punch, and the second punch to compression-mold a molding object is formed in the through-hole. An undercut molding part is formed in the surface of the second die facing the cavity. The second die is formed so as to be splittable into two or more split bodies.
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
B30B 11/02 - Presses spécialement adaptées à la fabrication d'objets à partir d'un matériau en grains ou à l'état plastique, p.ex. presses à briquettes ou presses à tablettes utilisant un pilon exerçant une pression sur le matériau dans une cavité de moulage
A die having a cavity and a lower punch fitted into the cavity. The cavity is divided and the parts slide along a division plane passing through the cavity parallel to the fitting direction of the die and the lower punch. The divided cavity parts are placed in a state of alignment along the division plane. The divided cavity parts are each filled with raw material powder. The die and the lower punch are then slid along the division plane, whereby the divided cavity parts are combined as the original cavity. The raw material powder in the cavity in a combined state is compressed by an upper punch and the lower punch.
B22F 7/02 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de couches successives
B30B 11/02 - Presses spécialement adaptées à la fabrication d'objets à partir d'un matériau en grains ou à l'état plastique, p.ex. presses à briquettes ou presses à tablettes utilisant un pilon exerçant une pression sur le matériau dans une cavité de moulage
B22F 7/06 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés
B30B 11/00 - Presses spécialement adaptées à la fabrication d'objets à partir d'un matériau en grains ou à l'état plastique, p.ex. presses à briquettes ou presses à tablettes
25.
Iron-copper-based oil-impregnated sintered bearing and method for manufacturing same
A sintered bearing exhibits less of a hard iron alloy phase, and has an excellent wear resistance and cost performance under low-revolution and high-load use conditions; and a method for producing such a sintered bearing. The sintered bearing contains Cu: 10 to 55% by mass, Sn: 0.5 to 7% by mass, Zn: 0 to 4% by mass, P: 0 to 0.6% by mass, C: 0.5 to 4.5% by mass and a remainder composed of Fe and inevitable impurities. An area ratio of a free graphite dispersed in a metal matrix of the bearing is 5 to 35%; a porosity thereof is 16 to 25%; a hardness of an iron alloy phase in the matrix is Hv 65 to 200; and raw material powders employ at least one of a crystalline graphite powder and a flake graphite powder each having an average particle size of 10 to 100 μm.
F16C 33/10 - Structures relatives à la lubrification
F16C 33/14 - Procédés particuliers de fabrication; Rodage
B22F 3/11 - Fabrication de pièces ou d'objets poreux
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
26.
OIL IMPREGNATED SINTERED BEARING AND PRODUCTION METHOD THEREOF
A plurality of recessed oil supply surfaces arranged in an isolated island-like distribution pattern, and a sliding surface continuous around the oil supply surfaces and supporting the outer circumferential surface of a shaft, are formed on the inner circumferential surface of a bearing hole into which the shaft is inserted, and the maximum difference in elevation between the sliding surface and the oil supply surfaces is 0.01% to 0.5% of the inner diameter Di of the sliding surface. The surface opening ratio of pores in the sliding surface is equal to or less than 10%, the surface opening ratio of the pores in the oil supply surfaces is more than 10% and less than 40%, and the surface area of a single oil supply surface is 0.03 mm2to 0.2×Di2mm2.
The present invention relates to a powder magnetic core with silica-based insulating film having a structure in which a plurality of Fe-based soft magnetic powder particles having surfaces coated with a silica-based insulating film are joined with each other through a grain boundary layer made of the silica-based insulating film. Fe diffused from the Fe-based soft magnetic powder particles is contained in the grain boundary layer and the grain boundary layer contains an oxide of each of Fe and Si or a composite oxide of Fe and Si.
H01F 1/33 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux particules métalliques ayant un revêtement d'oxyde
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
H01F 1/147 - Alliages caractérisés par leur composition
H01F 27/255 - Noyaux magnétiques fabriqués à partir de particules
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
H01F 1/24 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre comprimées, frittées ou agglomérées les particules étant isolées
This silica-based insulator-coated soft magnetic powder is an Fe-based soft magnetic powder the surface of which is coated with a silica-based insulating film, wherein the silica-based insulating film contains an Fe oxide and a Si oxide, and the Fe oxide and the Si oxide satisfy the relationship O(-Fe) / O(-Si) (the ratio of the quantity of O in the Fe oxide relative to the quantity of O in the Si oxide in the silica-based insulating film) = 0.05-1.0 (at% ratio).
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
C01B 33/12 - Silice; Ses hydrates, p.ex. acide silicique lépidoïque
H01F 1/20 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre
A molding die includes a first die having a through-hole; a second die inserted into the through-hole and configured to be movable relative to the first die; and first and second punches configured to be insertable into the through-hole, wherein an undercut molding part is provided on the second die, and a molding target is compression-molded in a cavity surrounded by inner side walls of the through-hole, the second die, the first punch, and the second punch.
B29C 43/02 - Moulage par pressage, c. à d. en appliquant une pression externe pour faire couler la matière à mouler; Appareils à cet effet pour la fabrication d'objets de longueur définie, c. à d. d'objets séparés
B30B 11/02 - Presses spécialement adaptées à la fabrication d'objets à partir d'un matériau en grains ou à l'état plastique, p.ex. presses à briquettes ou presses à tablettes utilisant un pilon exerçant une pression sur le matériau dans une cavité de moulage
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittage; Appareils spécialement adaptés à cet effet
Provided is a novel sintered oil-retaining bearing which exhibits excellent wear resistance and cost performance under harsh use conditions such as an output shaft of a motor for an electric component and a wiper motor of an automobile, where a bearing is subject to a heavy load and hammering vibration from a shaft. The bearing has: a metallographic structure containing 15-30 mass% of Cu, 1-4 mass% of C, and the balance Fe and incidental impurities, the copper being fused into at least the bearing surface; and in the base metal, pearlite or pearlite containing locally scattered ferrite and a copper-rich phase arranged in a mesh-like pattern. Free graphite is also dispersedly distributed in the base metal.
The Cu-based sintered sliding material has a composition including, by mass %, 7% to 35% of Ni, 1% to 10% of Sn, 0.9% to 3% of P, and 0.5% to 5% of C, with a remainder of Cu and inevitable impurities, wherein the Cu-based sintered sliding material includes a sintered body including: alloy grains that contain Sn and C and contain a Cu—Ni-based alloy as a main component; grain boundary phases that contain Ni and P as main components and are dispersedly distributed in grain boundaries of the alloy grains; and free graphite that intervenes at the grain boundaries of the alloy grains, the Cu-based sintered sliding material has a structure in which pores are dispersedly formed in the grain boundaries of the alloy grains, and an amount of C in a metal matrix including the alloy grains and the grain boundary phases is, by mass %, 0.02% to 0.20%.
C22C 9/06 - Alliages à base de cuivre avec le nickel ou le cobalt comme second constituant majeur
B22F 3/11 - Fabrication de pièces ou d'objets poreux
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
C22C 9/02 - Alliages à base de cuivre avec l'étain comme second constituant majeur
B22F 5/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser
F16C 33/10 - Structures relatives à la lubrification
F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
F16C 33/14 - Procédés particuliers de fabrication; Rodage
F16C 17/10 - Paliers à contact lisse pour mouvement de rotation exclusivement à la fois pour charges radiales et axiales
32.
Oil-retaining sintered bearing and method of producing the same
An oil-retaining sintered bearing in which friction coefficient can be reduced and a sliding property as a bearing can be improved by supplying a sufficient amount of oil to a sliding surface and preventing the supplied oil from moving to an interior from the sliding surface; a sliding surface 3 supporting an outer peripheral surface of a shaft and a helical oiling surface 4 around a shaft axis of a bearing hole are adjacently formed on an inner peripheral surface of the bearing hole into which the shaft is inserted; a surface open rate at the sliding surface 3 is not larger than 10%; and a surface open rate at the oiling surface exceeds 10%.
The present invention provides a bearing for a motor-type fuel injection pump, the bearing being formed of a Cu-Ni-based sintered alloy that is inexpensive and exhibits excellent corrosion resistance and abrasion resistance. The present invention comprises, in mass%, 10-20% of Ni, 2-4.5% of Sn, 0.05-0.4% of P, and 2-7% of C, with the remaining portion being Cu and unavoidable impurities, has a metal structure in which Sn is uniformly dispersed and distributed in the metal matrix, has a porosity of 7-17%, and has free graphite dispersed and distributed with pores.
Provided is a heat-resistant sintered material: that has a composition which includes, by mass%, Cr: 15 to 30%, Ni: 8 to 30%, Si: 2.0 to 6.0%, C: 0.5 to 2.5%, and the balance comprising Fe and inevitable impurities; and that has a structure in which a hard phase is dispersed in a parent phase. The parent phase contains Fe, Cr, Ni, and Si, the hard phase contains Fe, Cr, and C, and porosity is 2.0% or less.
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
35.
HEAT-RESISTANT SINTERED MATERIAL HAVING EXCELLENT OXIDATION RESISTANCE, WEAR RESISTANCE AT HIGH TEMPERATURES AND SALT DAMAGE RESISTANCE, AND METHOD FOR PRODUCING SAME
This heat-resistant sintered material has a composition which contains, in mass% as a whole composition, 20-38% of Cr, 0.5-3.0% of Mo, 3.0-7.0% of Si and 0.5-2.5% of C with the balance made up of Fe and unavoidable impurities. This heat-resistant sintered material has a structure wherein hard phases are dispersed in a matrix; the matrix contains Fe, Cr, Mo and Si; the hard phases contain Cr, Fe, Mo and C; and the porosity is 2.0% or less.
In order to provide an adequate amount of oil to a sliding surface and to prevent oil from moving from the sliding surface to the interior, thereby achieving lower friction and improving the bearing sliding characteristic, in this oil-impregnated sintered bearing (1) a sliding surface (3) supporting the outer circumferential surface of a shaft (11) and an oil supply surface (4) having a larger diameter than the sliding surface (3) are formed on the inner circumferential surface of a bearing hole (2) in which the shaft (11) is inserted, and are formed adjacent to each other in the axial direction of the bearing hole (2). The difference in height d1 between the sliding surface (3) and the oil supply surface (4) is 0.01% to 15% of the inner diameter of the sliding surface, the surface opening ratio of the sliding surface (3) is 10% or less, the surface opening ratio of the oil supply surface (4) exceeds 10%, and the average equivalent-circle diameter of the openings of pores in the sliding surface is 20 μm or less.
The present invention is characterized by being provided with: a bearing sleeve (11) composed of a sintered material and having a shaft hole; an annular seal member (12) disposed such that one surface thereof contacts the bearing sleeve; and a washer member (13) which is in contact with the other surface opposite to the one surface of the seal member and engages the seal member with the bearing sleeve, wherein the washer member (13) is fixed relative to the bearing sleeve (11).
The present invention pertains to an oil-impregnated sintered bearing in which a Fe-Cu-based sintered body is impregnated with lubricant oil and which has a bearing hole (3) for supporting a rotary shaft (2) inserted therethrough, wherein: an inner circumferential surface (S) of the bearing hole (3) is at least provided with a first region (3A) that includes the central part in an axial direction and provided with a second region (3B or 3C) that covers from one end of the first region (3A) up to one opening of the bearing hole (3); and the second region (3B or 3C) has a friction surface (S2 or S3) that has a larger Fe-phase area and a smaller Cu-phase area as compared to those in a friction surface (S1) of the first region (3A).
This oil-impregnated sintered bearing comprises a Fe-Cu sintered body impregnated with a lubricant oil and has a bearing hole for supporting a rotation shaft passing therethrough. The inner circumferential surface of the bearing hole comprises a first region that forms a center portion in the axial direction, a second region extending from one end of the first region to one opening of the bearing hole, and a third region extending from the other end of the first region to the other opening of the bearing hole. The area ratio of a Cu phase in the center along the axial direction of the second region is 80-100% of the area ratio of a Cu phase in the center along the axial direction of the third region.
B22F 5/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 3/035 - Presses de moulage à cet effet avec une ou plusieurs parties montées de façon pivotante
F16C 33/10 - Structures relatives à la lubrification
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
F16C 33/14 - Procédés particuliers de fabrication; Rodage
40.
Heat-resistant sintered material having excellent oxidation resistance, high-temperature wear resistance and salt damage resistance, and method for producing same
An object of this heat-resistant sintered material and a production method therefor is to obtain a heat-resistant sintered material having excellent oxidation resistance, high-temperature wear resistance and salt damage resistance. This heat-resistant sintered material has a composition containing, in mass % values, Cr: 25 to 50%, Ni: 2 to 25% and P: 0.2 to 1.2%, with the remainder being Fe and unavoidable impurities, and has a structure including an Fe—Cr matrix, and a hard phase composed of Cr—Fe alloy particles dispersed within the Fe—Cr matrix, wherein the Cr content of the Fe—Cr matrix is from 24 to 41 mass %, the Cr content of the hard phase is from 30 to 61 mass %, and the effective porosity is 2% or less.
A die 31 having a cavity 32, and a lower punch 41 fitted into the cavity 32 are divided and slid along a division plane 34 passing through the cavity 32 parallel to the fitting direction of the die 31 and the lower punch 41, whereby divided cavities 32A, 32B are placed in a state of alignment along the division plane 34, the divided cavities 32A, 32B are each filled with a raw material powder, and the die 31 and the lower punch 41 are then slid along the division plane 34, whereby the divided cavities 32A, 32B are combined as the original cavity 32, and the raw material powder in the cavity 32 in the combined state is compressed by an upper punch and the lower punch 41.
B22F 7/06 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés
B22F 3/035 - Presses de moulage à cet effet avec une ou plusieurs parties montées de façon pivotante
B30B 11/00 - Presses spécialement adaptées à la fabrication d'objets à partir d'un matériau en grains ou à l'état plastique, p.ex. presses à briquettes ou presses à tablettes
B30B 11/02 - Presses spécialement adaptées à la fabrication d'objets à partir d'un matériau en grains ou à l'état plastique, p.ex. presses à briquettes ou presses à tablettes utilisant un pilon exerçant une pression sur le matériau dans une cavité de moulage
This molding die is provided with a first die having a through-hole, a second die inserted in the through-hole and capable of moving relative to the first die, and a first punch and second punch each insertable into the through-hole, a cavity for compression-molding a molded object being formed in the through-hole, the cavity being surrounded by the second die and the first punch and second punch, an undercut molding part being formed in the surface of the second die facing the cavity, and the second die being formed so as to be divisible into at least two divisions.
B22F 3/035 - Presses de moulage à cet effet avec une ou plusieurs parties montées de façon pivotante
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
B30B 11/02 - Presses spécialement adaptées à la fabrication d'objets à partir d'un matériau en grains ou à l'état plastique, p.ex. presses à briquettes ou presses à tablettes utilisant un pilon exerçant une pression sur le matériau dans une cavité de moulage
43.
IRON-COPPER-BASED OIL-IMPREGNATED SINTERED BEARING AND METHOD FOR MANUFACTURING SAME
Provided are a novel iron-copper-based oil-impregnated sintered bearing and a method for manufacturing the same, the bearing having minimal hard iron alloy phases and excellent wear resistance and cost performance in a low-rotation, high-load usage condition such as in the output shaft of an electric motor for an automobile. An iron-copper-based oil-impregnated sintered bearing including 10-55% by mass of Cu, 0.5-7% by mass of Sn, 0-4% by mass of Zn, 0-0.6% by mass of P, and 0.5-4.5% by mass of C, the remainder comprising Fe and unavoidable impurities, wherein the area ratio of free graphite dispersed in a metal matrix thereof is 5-35%, the porosity thereof is 15% to 25%, and the hardness of an iron alloy phase in a base thereof is Hv 65-200. In the present invention, flake graphite powder and/or scaly graphite powder having an average particle diameter of 10-100 µm is used.
In a die for compressing and sizing a sintered body at straight portions, upper taper portions are provided on a die upper portion and a core rod upper portion, and the straight portions are provided at a die lower portion and a core rod lower portion. The die upper portion and the core rod upper portion have Young's moduli higher than the die lower portion and the core rod lower portion. The die upper portion and the core rod upper portion are made of materials having Young's moduli that are at least 50 GPa higher than that of the sintered body. The sintered body can be densified with a smaller ironing margin. Since the sintered body is ironed without being compressed, by the upper taper portions and the core rod upper portion having high Young's moduli, the die is prevented from breaking and being abraded due to ironing.
Provided is a Cu-based sintered bearing comprising: 15-36 mass % of Ni; 3-13 mass % of Sn; 0.05-0.55 mass % of P; and 0.02-4 mass % of C in total, the balance consisting of Cu and inevitable impurities, wherein the content of C forming an alloy with a matrix within Cu—Ni-based main phase grains is 0.02-0.10 mass %.
B22F 3/16 - Compactage et frittage par des opérations successives ou répétées
B22F 5/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
A sintered sliding material with excellent corrosion resistance, heat resistance, and wear resistance is provided. The sintered sliding material has a composition made of: 36-86 mass % of Ni; 1-11 mass % of Sn; 0.05-1.0 mass % of P; 1-9 mass % of C; and the Cu balance including inevitable impurities. The sintered sliding material is made of a sintered material of a plurality of grains of alloy of Ni—Cu alloy or Cu—Ni alloy, the Ni—Cu alloy and the Cu—Ni alloy containing Sn, P, C, and Si; has a structure in which pores are dispersedly formed in grain boundaries of the plurality of the grains of alloy; and as inevitable impurities in a matrix constituted from the grains of alloy, a C content is 0.6 mass % or less and a Si content is 0.15 mass % or less.
B22F 7/00 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
B22F 3/11 - Fabrication de pièces ou d'objets poreux
C22C 9/06 - Alliages à base de cuivre avec le nickel ou le cobalt comme second constituant majeur
C22C 19/03 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 3/16 - Compactage et frittage par des opérations successives ou répétées
C22C 19/00 - Alliages à base de nickel ou de cobalt, seuls ou ensemble
C22C 30/02 - Alliages contenant moins de 50% en poids de chaque constituant contenant du cuivre
C22C 30/04 - Alliages contenant moins de 50% en poids de chaque constituant contenant de l'étain ou du plomb
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
F16C 33/14 - Procédés particuliers de fabrication; Rodage
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
C22C 1/08 - Alliages poreux avec pores ouverts ou fermés
C22C 1/10 - Alliages contenant des composants non métalliques
47.
DUST CORE COATED WITH SILICA-BASED INSULATION, METHOD FOR MANUFACTURING SAME, AND ELECTROMAGNETIC CIRCUIT COMPONENT
The present invention pertains to a dust core coated with silica-based insulation, the dust core being characterized by having a structure in which Fe-based soft magnetic powder particles having surfaces coated with silica-based insulating films are bonded via grain boundary layers composed of the plurality of silica-based insulating films, wherein the grain boundary layers contain Fe diffused from the Fe-based soft magnetic powder particles, and contain oxides of each of Fe and Si, or a composite oxide of Fe and Si.
H01F 1/147 - Alliages caractérisés par leur composition
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittage; Appareils spécialement adaptés à cet effet
B22F 3/24 - Traitement ultérieur des pièces ou objets
H01F 27/255 - Noyaux magnétiques fabriqués à partir de particules
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
This molding mold is characterized by the following: being provided with a first die having a through hole, a second die that is inserted in the through hole and is capable of relative movement with respect to the first die, and a first punch and a second punch that can each be inserted in the through hole; an undercut forming part being provided to the second die; and an object to be molded being compression-molded in a cavity surrounded by an inner side surface of the through hole, the second die, the first punch, and the second punch.
B30B 11/02 - Presses spécialement adaptées à la fabrication d'objets à partir d'un matériau en grains ou à l'état plastique, p.ex. presses à briquettes ou presses à tablettes utilisant un pilon exerçant une pression sur le matériau dans une cavité de moulage
This sintered sliding material is characterized by: comprising a sintered body of a plurality of Cu-Ni alloy grains including Sn and C which has a composition including, expressed in mass%, 10-35% of Ni, 5-12% of Sn, 0-0.9% of P, and 4.1-9% of C, the remainder being Cu and unavoidable impurities; and having a structure in which pores are formed in a dispersed manner at boundaries of the plurality of alloy grains, and free graphite is distributed in the pores. The sintered sliding material is further characterized in that the amount of C in a metal matrix formed by the alloy grains is 0-0.07% expressed in mass%.
This Cu-based sintered sliding material comprises a sintered body having a composition which includes, expressed in mass%, 7-35% of Ni, 1-10% of Sn, 0.9-3% of P, and 0.5-5% of C, the remainder being Cu and unavoidable impurities. The sintered body is provided with: alloy grains which include Sn and C, and which have a Cu-Ni-based alloy as a main component; a grain boundary phase which is distributed in a dispersed manner at boundaries of the alloy grains, and which has Ni and P as main components; and free graphite interposed between the boundaries of the alloy grains. The Cu-based sintered sliding material has a structure in which pores are formed in a dispersed manner at the boundaries of the alloy grains. The C content in a metal matrix including the alloy grains and the grain boundary phase is 0.02-0.20% expressed in mass%.
B22F 5/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser
B22F 3/11 - Fabrication de pièces ou d'objets poreux
C22C 9/02 - Alliages à base de cuivre avec l'étain comme second constituant majeur
C22C 9/06 - Alliages à base de cuivre avec le nickel ou le cobalt comme second constituant majeur
F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
F16C 33/10 - Structures relatives à la lubrification
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
F16C 33/14 - Procédés particuliers de fabrication; Rodage
51.
COBALT-FREE HEAT-RESISTANT SINTERING MATERIAL HAVING SUPERIOR HIGH-TEMPERATURE WEAR RESISTANCE AND HIGH-TEMPERATURE STRENGTH, AND METHOD FOR PRODUCING SAME
The invention according to the present application pertains to a cobalt-free heat-resistant sintering material (A) having superior high-temperature wear resistance and high-temperature strength, and comprising a ferrous alloy base (1) and 33–60% by volume of Chromium-Iron-Boron hard particles (2) dispersed therein. The production method of the invention according to the present application is characterized in that at least one from among powdered CrB2, powdered Cr2B, and powdered CrB is added to and mixed with a ferrous powdered alloy having an average particle size of 5–15 μm, after which the mixed powder is compression molded, and then sintered at 1150–1250°C.
C22C 29/14 - Alliages à base de carbures, oxydes, borures, nitrures ou siliciures, p.ex. cermets, ou d'autres composés métalliques, p.ex. oxynitrures, sulfures à base de borures
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
C22C 38/54 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du bore
52.
SINTERED OIL-RETAINING BEARING AND PROCESS FOR PRODUCING THE SAME
The present invention pertains to a sintered oil-retaining bearing in which a sliding surface (3) for supporting the outer peripheral surface of a shaft (11) and a helical oil supply surface (4) centered about the axial center of a shaft hole (2) are formed adjacent to each other in the inner peripheral surface of the shaft hole (2) through which the shaft (11) is inserted, the surface opening ratio in the sliding surface (3) is 10% or less, and the surface opening ratio of the oil supply surface (4) exceeds 10%. The present invention thereby makes it possible to supply a sufficient amount of oil to the sliding surface (3), to minimize the amount of supplied oil that moves to the interior from the sliding surface (3), to achieve a low coefficient of friction, and to improve the sliding characteristic of the bearing.
In the present invention, a die for compressing and sizing a sintered body (1) with straight parts (11, 21) is provided with upper part-side tapered parts (15, 25) at a die upper part (13) and a core rod upper part (23), and is provided with the straight parts (11, 21) at a die lower part (14) and a core rod lower part (24). The material of the die upper part (13) and the core rod upper part (23) has a higher Young's modulus than the material of the die lower part (14) and the core rod lower part (24). The die upper part (13) and the core rod upper part (23) are formed of a material having a Young's modulus that is higher than that of the sintered body (1) by at least 50 GPa. As a result, the sintered body (1) can be densified with a small drawing margin (S). In addition, by performing the drawing without compression at the tapered parts that are parts of the die upper part (13) and the core rod upper part (23) and are formed of a material having a high Young's modulus, damage to the die can be prevented and wear of the die caused by drawing can be suppressed.
HEAT-RESISTANT SINTERED MATERIAL HAVING EXCELLENT OXIDATION RESISTANCE, WEAR RESISTANCE AT HIGH TEMPERATURES AND SALT DAMAGE RESISTANCE, AND METHOD FOR PRODUCING SAME
The purpose of this heat-resistant sintered material and a production method thereof is to obtain a heat-resistant sintered material that has excellent oxidation resistance, wear resistance at high temperatures, and salt damage resistance. This heat-resistant sintered material is characterized by: having a composition that contains, in mass%, 25-50% of Cr, 2-25% of Ni and 0.2-1.2% of P, with the balance made up of Fe and unavoidable impurities; and having a structure that comprises an Fe-Cr matrix and hard phases that are dispersed within the Fe-Cr matrix and are composed of Cr-Fe alloy grains. This heat-resistant sintered material is also characterized in that: the Cr content in the Fe-Cr matrix is 24-41% by mass; the Cr content in the hard phases is 30-61% by mass; and the intercommunicating porosity is 2% or less.
The invention of the present application is characterized in comprising a sintered compact of a plurality of grains of a Ni-Cu or Cu-Ni alloy that contains Sn, P, and C, said grains comprising 36-86% of Ni, 1-11% of Sn, 0.05-1.0% of P, and 1-9% of C (percentages given with respect to mass), the remainder comprising Cu and inevitable impurities; said invention having a structure in which pores are dispersedly formed at the boundaries of the alloy grains, and the inevitable impurity content of the matrix constituted by the alloy grains being no more than 0.6% of C, and no more than 0.15% of Si (percentages given with respect to mass).
Provided is a Cu-based sintered bearing comprising: 15-36 mass% of Ni; 3-13 mass% of Sn; 0.05-0.55 mass% of P; and 0.02-4 mass% C in total, the balance consisting of Cu and inevitable impurities, wherein the content of C forming an alloy with a matrix within Cu-Ni main-phase grains is 0.02-0.10 mass%.
09 - Appareils et instruments scientifiques et électriques
12 - Véhicules; appareils de locomotion par terre, par air ou par eau; parties de véhicules
Produits et services
Iron and steel; nonferrous metals and their alloys; ores of
metal; steel, unwrought or semi-wrought; steel alloys;
anti-friction metal; iron, unwrought or semi-wrought; common
metals, unwrought or semi-wrought; alloys of common metals;
brass, unwrought or semi-wrought; bronze; copper, unwrought
or semi-wrought; steel and iron produced by metal sintering
processes; common metals and their alloys produced by metal
sintering processes; metals in powder form for powder
metallurgy; magnetic alloys. Non-electric prime movers [not for land vehicles] and parts
of non-electric prime movers; pneumatic or hydraulic
machines and instruments; machine elements [not for land
vehicles]; starters for motors and engines; AC motors and DC
motors [not including those for land vehicles but including
"parts" for any AC motors and DC motors]; AC generators
[alternators]; DC generators; engines, other than for land
vehicles; parts, fittings and component parts for engines;
motors [not including those for AC motors and DC motors for
land vehicles but including "parts" for any AC motors and DC
motors]; pumps; lubricating oil pumps; oil pumps for
automobile engines; oil pump rotors for engines for land
vehicles; sprockets for power transmissions and gearing for
machines [not for land vehicles]; pulleys; gears for
machines; exhausts for motors and engines; air intake
apparatus for motors and engines; variable valve timing
system for engines for land vehicles; parts, fittings and
component parts of variable valve timing system for engines
for land vehicles; air intake valve guide for automobile
engines; exhaust valve guide for automobile engines; pistons
[parts of machines or engines]; bearings [machine elements
not for land vehicles]; housings of variable valve timing
system for engines for land vehicles; alternators; brakes,
not for land vehicles; valves, being parts of machines, not
for land vehicles; camshafts for vehicle engines; crank
shafts; intake and exhaust valves for engines for land
vehicles. Power distribution or control machines and apparatus; rotary
converters; phase modifiers; parts and fittings for
telecommunication machines and apparatus; magnetic cores;
resistance wires; electromagnetic coils and their parts,
fittings and component parts; choking coils [impedance] and
their parts, fittings and component parts; inductors
[electricity] and their parts, fittings and component parts;
electric reactors and their parts, fittings and component
parts; metallic magnetic materials. Non-electric prime movers for land vehicles [not including
"their parts"]; mechanical elements for land vehicles; AC
motors or DC motors for land vehicles [not including "their
parts"]; railway rolling stock and their parts and fittings;
automobiles and their parts and fittings; two-wheeled motor
vehicles, bicycles and their parts and fittings; engines for
land vehicles; electric motors for land vehicles;
transmissions for land vehicles, and their parts, fittings
and component parts; gearings for land vehicles; torque
converters for land vehicles, and their parts, fittings and
component parts; reduction gears for land vehicles; shock
absorbers for land vehicles, and their parts, fittings and
component parts; clutches for land vehicles, and their
parts, fittings and component parts; brakes for vehicles,
and their parts, fittings and component parts; steering
device for land vehicles, and their parts, fittings and
component parts; sprockets for land vehicles; gears for land
vehicles; bearings for land vehicles.
Provided is a raw material powder for powder metallurgy, capable of preventing stains, surface defects and decarburization of a sintered body, improving strength and density thereof. The raw material powder for powder metallurgy is for use in the production of a sintered body that is sintered at a temperature of not lower than 500° C., composed of a mixture of a metal powder and a lubricant, in which the lubricant is melamine cyanurate or terephthalic acid. Alternatively, the raw material powder for powder metallurgy is for use in the production of a sintered body that is sintered at a temperature of not lower than 500° C, composed of a mixture of a metal powder, a first lubricant and a second lubricant, in which the first lubricant is melamine cyanurate or terephthalic acid, while the second lubricant is preferably erucic acid amide or stearic acid amide.
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
C10M 105/70 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé organique non macromoléculaire contenant de l'azote en tant qu'hétéro-atome d'un cycle
C10M 105/00 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé organique non macromoléculaire
Provided are a new rotating body, rotating body material, and manufacturing method for a rotating body, which make it possible to shorten the cutting distance in an inner diameter axis direction of an inner diameter surface to thereby suppress the processing cost of the inner diameter surface and manufacture an inner rotor at lower cost. An inner diameter surface (12) into which a shaft of a metallic rotating body (11) is press-fitted is provided with a processed portion (13) subjected to cutting processing at one end side, and an unprocessed portion (14) not subjected to cutting processing at the other end side. The inner diameter of the processed portion (13) is formed smaller than the inner diameter of the unprocessed portion (14). Chamfered portions are provided, respectively, in both end portions of the inner diameter surface (12), the chamfered portion (15) in the end portion at one end side is subjected to cutting processing, and the chamfered portion (6) in the end portion at the other end side is not subjected to cutting processing. An inner diameter surface (2) of a material (1) that is processed into the rotating body (11) is provided with a small-diameter portion (3) at one end side and a large-diameter portion (4) having a larger inner diameter than the small-diameter portion (3) at the other end side. A step (5) is formed between the small-diameter portion (3) and the large-diameter portion (4), and the chamfered portion (6) is formed in an end portion at the other end side.
F04C 2/10 - Machines ou pompes à piston rotatif du type à engrènement extérieur, c. à d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés du type à axe interne, l'organe externe ayant plus de dents ou de parties équivalentes de prise, p.ex. de rouleaux, que l'organe interne
F04C 15/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires des "machines", des pompes ou installations de pompage non couverts par les groupes
09 - Appareils et instruments scientifiques et électriques
12 - Véhicules; appareils de locomotion par terre, par air ou par eau; parties de véhicules
Produits et services
[ Iron and steel; nonferrous metals and their alloys; ores of metal; steel, unwrought or semi-wrought; steel alloys; anti-friction metal; iron, unwrought or semi-wrought; common metals, unwrought or semi-wrought; alloys of common metals; brass, unwrought or semi-wrought; ] bronze; copper, unwrought or semi-wrought; steel and iron produced by metal sintering processes; common metals and their alloys produced by metal sintering processes [ ; common metals in powder form for powder metallurgy; magnetic alloys ] [ Non-electric prime movers not for land vehicles and parts thereof, namely, internal combustion engines not for land vehicles, turbochargers for internal combustion engines for land vehicles, turbochargers for internal combustion engines not for land vehicles, exhaust gas recirculation system for internal combustion engines for land vehicles, exhaust gas recirculation system for internal combustion engines not for land vehicles; ] engine parts for land vehicles, namely, [ variable camshaft timing system comprising rotors, ] engine timing components, [ cam sprockets and chains, engine camshafts, gears, sprockets and pulleys, variable valve lift control system comprising rotors, camshafts, gears, sprockets and pulleys, and bearings; machine elements not for land vehicles, namely, bearings being machine elements not for land vehicles, power transmission and gearing for machines not for land vehicles, shock absorbers being machine elements not for land vehicles, valves being machine elements not for land vehicles, and cams being machine elements not for land vehicles; starters for motors and engines; AC motors and DC motors not including those for land vehicles and component parts therefore, namely, component parts for AC motors and DC motors not for land vehicles, namely, non-land vehicle bearings; AC generators; alternators; DC generators; engines, other than for land vehicles and component parts therefore; motors other than for land vehicles and component parts therefore; lubricating oil pumps; oil pumps for automobile engines; ] oil pump rotors for engines for land vehicles; [ engine timing components, namely, cam sprockets for power transmissions and gearing for machines, not for land vehicles, and sprockets for drive chains and conveyor chains for power transmissions and gearing for machines, not for land vehicles; pulleys being parts of machines; gears for machines; exhausts for motors and engines; air intake apparatus comprising air intake manifolds, air intake valves and air intake filters for motors and engines for land vehicles and for motors and engines other than for land vehicles; variable valve timing system for engines for land vehicles comprising rotors, camshafts, gears, sprockets and pulleys; ] parts, fittings and component parts of variable valve timing system for engines for land vehicles, namely, [ cam, shafts, gears, rotors, ] housings, [ cases, sprockets and pulleys; air intake valve guide for automobile engines; exhaust valve guide for automobile engines; pistons for machines or engines; bearings, being machine elements not for land vehicles; ] housings of variable valve timing system for engines for land vehicles [ ; alternators; brakes for machines; valves, being parts of machines, not for land vehicles; camshafts for vehicle engines; crank shafts being parts of engines and motors for land vehicles and non-land vehicles; intake and exhaust valves for engines for land vehicles ] [ Power distribution or control machines and apparatus, namely, converters, electric transformers, induction voltage regulators, electric reactors; rotary converters; ] magnetic cores [ ; resistance wires; electromagnetic coils and their component parts and fittings; choking coils for impedance for use in electrical apparatus, and their component parts and fittings; electrical inductors and their component parts and fittings; electric reactors and their component parts and fittings ] Non-electric prime movers for land vehicles not including their parts, namely, internal combustion engines; mechanical elements for land vehicles, namely, axles, drive shafts, spindles, axle bearings, shaft couplings, pulleys, and land vehicle transmissions; AC motors or DC motors for land vehicles, not including their parts; railway rolling stock and their parts and fittings; automobiles and their structural parts and fittings; two-wheeled motor vehicles, bicycles and their structural parts and fittings; engines for land vehicles; electric motors for land vehicles; transmissions for land vehicles, and their parts, fittings and component parts, namely, transmission chains, transmission mechanisms, transmission mounting plates, transmission top covers, power transmission belts, transmission shafts, idling pulleys, cams, belt pulleys and roller chains; gearings for land vehicles; torque converters for land vehicles, and their component parts and fittings; reduction gears for land vehicles; shock absorbers for land vehicles, and their component parts and fittings; clutches for land vehicles, and their component parts and fittings; brakes for vehicles, and their component parts and fittings; steering apparatus for land vehicles, namely, steering wheels and steering linkages for land vehicles; sprockets for motorcycle drives; reduction, reversing and speed change gears for land vehicles and transmission gears for land vehicles
61.
Method of producing a Cu-based sintered sliding member
A Cu-based sintered sliding member that can be used under high-load conditions. The sliding member is age-hardened, including 5 to 30 mass % Ni, 5 to 20 mass % Sn, 0.1 to 1.2 mass % P, and the rest including Cu and unavoidable impurities. In the sliding member, an alloy phase containing higher concentrations of Ni, P and Sn than their average concentrations in the whole part of the sliding member, is allowed to be present in a grain boundary of a metallic texture, thereby achieving excellent wear resistance. Hence, without needing expensive hard particles, there can be obtained, at low cost, a Cu-based sintered sliding member usable under high-load conditions. Even more excellent wear resistance is achieved by containing 0.3 to 10 mass % of at least one solid lubricant selected from among graphite, graphite fluoride, molybdenum disulfide, tungsten disulfide, boron nitride, calcium fluoride, talc and magnesium silicate mineral powders.
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
C22C 9/02 - Alliages à base de cuivre avec l'étain comme second constituant majeur
C22C 9/06 - Alliages à base de cuivre avec le nickel ou le cobalt comme second constituant majeur
C22C 32/00 - Alliages non ferreux contenant entre 5 et 50% en poids d'oxydes, de carbures, de borures, de nitrures, de siliciures ou d'autres composés métalliques, p.ex. oxynitrures, sulfures, qu'ils soient soient ajoutés comme tels ou formés in situ
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
A bearing for a motor-type fuel pump comprises a Zn—P—Ni—Sn—C—Cu-based sintered alloy and has corrosion resistance to a coarse gasoline containing sulfur or an organic acid(s); superior wear resistance; and superior conformability with a shaft as a counterpart. The bearing is suitable for use in a downsized fuel pump and has a structure in which a base comprises 3 to 13% by mass of Zn, 0.1 to 0.9% by mass of P, 10 to 21% by mass of Ni, 3 to 12% by mass of Sn, 1 to 8% by mass of C and a remainder composed of Cu and inevitable impurities. The base also comprises a solid solution phase of a Zn—Ni—Sn—Cu alloy. A Sn alloy phase containing no less than 15% by mass of Sn is formed in grain boundaries of the base. Pores have a porosity of 8 to 18% and free graphite distributed therein.
A sintered bearing has a structure in which Ni—P alloy particles having an average diameter of 10 to 100 μm are dispersed in an amount of 1 to 20% by mass in a Cu-based sintered alloy base, a Fe—Cu-based sintered alloy base or a Cu—Ni-based sintered alloy base. The Ni—P alloy particles are derived from a raw material powder comprising 1 to 12% by mass of P; and a remainder composed of Ni and inevitable impurities. The Cu-based sintered alloy base contains no less than 40% by mass of Cu. The Fe—Cu-based sintered alloy base contains no more than 50% by mass of Fe. The Cu—Ni-based sintered alloy base contains 20 to 40% by mass of Ni and 0.1 to 1.0% by mass of P; or contains 10 to 25% by mass of Ni, 10 to 25% by mass of Zn and 0.1 to 1.0% by mass of P.
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
C22C 9/02 - Alliages à base de cuivre avec l'étain comme second constituant majeur
C22C 9/04 - Alliages à base de cuivre avec le zinc comme second constituant majeur
C22C 9/06 - Alliages à base de cuivre avec le nickel ou le cobalt comme second constituant majeur
C22C 19/03 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel
C22C 1/05 - Mélanges de poudre métallique et de poudre non métallique
C22C 1/10 - Alliages contenant des composants non métalliques
C22C 30/02 - Alliages contenant moins de 50% en poids de chaque constituant contenant du cuivre
C22C 30/06 - Alliages contenant moins de 50% en poids de chaque constituant contenant du zinc
C22C 32/00 - Alliages non ferreux contenant entre 5 et 50% en poids d'oxydes, de carbures, de borures, de nitrures, de siliciures ou d'autres composés métalliques, p.ex. oxynitrures, sulfures, qu'ils soient soient ajoutés comme tels ou formés in situ
Provided is an oil pump rotor capable of improving a volume efficiency and a quietness. When a diameter of a base circle bi of an inner rotor is Φ bi; a diameter of a first outer rolling circle Di is Φ Di; a diameter of a first inner rolling circle di is Φ di; a diameter of a base circle bo of an outer rotor is Φ bo; a diameter of a second outer rolling circle Do is Φ Do; a diameter of a second inner rolling circle do is Φ do; and an eccentricity amount between the inner rotor and the outer rotor is e, Φ bi=n·(Φ Di+Φ di) and Φ bo=(n+1)·(Φ Do+Φ do) hold; either Φ Di+Φ di=2e or Φ Do+Φ do=2e holds; and Φ Do>Φ Di and Φ di>Φ do hold. When a clearance between the inner rotor and the outer rotor is t, 0.3≦((Φ Do+Φ do)−(Φ Di+Φ di))·(n+1)/t≦0.6 holds, provided that Φ Di+Φ di=2e; or 0.3≦((Φ Do+Φ do)−(Φ Di+Φ di))·n/t≦0.6 holds, provided that Φ Do+Φ do=2e.
F04C 2/10 - Machines ou pompes à piston rotatif du type à engrènement extérieur, c. à d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés du type à axe interne, l'organe externe ayant plus de dents ou de parties équivalentes de prise, p.ex. de rouleaux, que l'organe interne
F04C 2/08 - Machines ou pompes à piston rotatif du type à engrènement extérieur, c. à d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés
Provided is a starting material powder that is for powder metallurgy and that is capable of improving strength and density, and preventing sintered-body contamination, surface defects, and decarburization. The starting material powder for powder metallurgy is for use in the production of a sintered body obtained by sintering at 500°C or higher, wherein a metal powder and a lubricant are mixed with one another, and the lubricant is melamine cyanurate or terephthalic acid. Or, the starting material powder for powder metallurgy is for use in the production of a sintered body obtained by sintering at 500°C or higher, wherein a metal powder, a first lubricant and a second lubricant are mixed with one another, the first lubricant is melamine cyanurate or terephthalic acid, and it is preferable for the second lubricant to be erucic acid amide or stearic acid amide.
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
C10M 105/30 - Acides carboxyliques ou leurs sels comportant plusieurs groupes carboxyle liés à un atome de carbone d'un cycle aromatique à six chaînons
C10M 105/70 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé organique non macromoléculaire contenant de l'azote en tant qu'hétéro-atome d'un cycle
The purpose of the present invention is to provide a bearing for a motor-type fuel pump that has corrosion resistance against poor-quality gasoline that includes sulfur or organic acids, that, because of resistance to wear and outstanding conformability with a coupled shaft, can be used favorably even in compact fuel pumps, and that is made of a novel Zn-P-Ni-Sn-C-Cu-based sintered alloy. The bearing is characterized by having a structure in which contained are, by weight, 3-13% Zn, 0.1-0.9% P, 10-21% Ni, 3-12% Sn, and 1-8% C, with the remainder consisting of Cu and unavoidable impurities, in which an Sn alloy phase that comprises at least 15% Sn by weight is formed on grain boundaries of a base comprising a solid solution phase of a Zn-Ni-Sn-Cu alloy, and in which the porosity is 8-18%, and free graphite is distributed in the pores.
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
F16C 33/16 - Surface de glissement principalement constituée de graphite
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
67.
Composite soft magnetic material having low magnetic strain and high magnetic flux density, method for producing same, and electromagnetic circuit component
A composite soft magnetic material having low magnetostriction and high magnetic flux density contains: pure iron-based composite soft magnetic powder particles that are subjected to an insulating treatment by a Mg-containing insulating film or a phosphate film; and Fe—Si alloy powder particles including 11%-16% by mass of Si. A ratio of an amount of the Fe—Si alloy powder particles to a total amount is in a range of 10%-60% by mass. A method for producing the composite soft magnetic material comprises the steps of: mixing a pure iron-based composite soft magnetic powder, and the Fe—Si alloy powder in such a manner that a ratio of the Fe—Si alloy powder to a total amount is in a range of 10%-60%; subjecting a resultant mixture to compression molding; and subjecting a resultant molded body to a baking treatment in a non-oxidizing atmosphere.
H01F 1/24 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre comprimées, frittées ou agglomérées les particules étant isolées
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
B22F 3/16 - Compactage et frittage par des opérations successives ou répétées
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
H01F 27/255 - Noyaux magnétiques fabriqués à partir de particules
H01F 1/26 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre comprimées, frittées ou agglomérées les particules étant isolées au moyen de substances organiques macromoléculaires
H01F 1/33 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux particules métalliques ayant un revêtement d'oxyde
68.
SINTERED ALLOY HAVING EXCELLENT ABRASION RESISTANCE
Provided is a novel sintered bearing having abrasion resistance superior to that of conventional products. The present invention is provided with a structure in which 1-20 mass % of Ni-P alloy particles having an average particle diameter of 10-100 μm are dispersed in a Cu-based sintered alloy base metal, Fe-Cu-based sintered alloy base metal or Cu-Ni-based sintered alloy base metal; the Ni-P alloy particles are derived from a raw material powder comprising 1-12 mass % of P, with the remainder being Ni and unavoidable impurities. The Cu-based sintered alloy base metal contains 40 mass % or more of Cu. The Fe-Cu-based sintered alloy base metal contains 50 mass % or less of Fe. The Cu-Ni-based sintered alloy base metal contains 20-40 mass % of Ni and 0.1-1.0 mass % of P or 10-25 mass % of Ni, 10-25 mass % of Zn and 0.1-1.0 mass % of P.
There is provided a Cu-based oil-impregnated sintered bearing which can be used for high-load applications such as an ABS system and a wiper motor system in automobile, can be manufactured at low cost, and is excellent in abrasion resistance and seizure resistance. The bearing contains 5 to 40% by mass of Ni, 3 to 15% by mass of Sn, 0.5 to 4.0% by mass of P, or further 0.3 to 5.0% by mass of a solid lubricant, and a remainder comprising Cu and inevitable impurities, and has a metallic structure in which a phase mainly composed of Ni and P is dispersed in a matrix, and has a 5 to 25% porosity.
F16C 33/10 - Structures relatives à la lubrification
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
C22C 1/10 - Alliages contenant des composants non métalliques
C22C 9/02 - Alliages à base de cuivre avec l'étain comme second constituant majeur
C22C 9/06 - Alliages à base de cuivre avec le nickel ou le cobalt comme second constituant majeur
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
B22F 3/11 - Fabrication de pièces ou d'objets poreux
Provided is a sliding sintered member having excellent wear resistance under high-temperature environments and excellent oxidation resistance. In the sintered member, at least one component selected from a barium compound, a strontium compound, mica, an aluminum-silicon composite oxide and alumina is dispersed as a solid lubricant in a stainless alloy selected from an austenitic stainless alloy, a martensitic stainless alloy and a ferritic stainless alloy each containing 10 to 35 mass% of Cr, wherein the content of the solid lubricant is 3 to 50 vol%. As the solid lubricant, BaSO4, BaO, BaSiO3, BaNiO3, SrSO4, Sr2CrO4, sericite, phlogopite, mullite and alumina can be used suitably.
There is provided a bearing for motor-powered fuel injection pumps, made from Cu—Ni-based sintered alloy, which is able to be obtained at a low cost, having excellent corrosion and abrasion resistances. The bearing contains 10 to 20% by mass of Ni, 5 to 13% by mass of Sn, 0.1 to 0.8% by mass of P, 1 to 6% by mass of C, and a remainder containing Cu and inevitable impurities, and is formed with a Ni—Sn—Cu—P phase containing at least 30% by mass of Sn in a grain boundary, and has a 8 to 18% porosity. The Ni—Sn—Cu—P phase contains 30 to 49% by mass of Ni, 10 to 30% by mass of Cu, 0.5 to 1.5% by mass of P, and a remainder containing Sn and inevitable impurities.
Provided are a composite soft magnetic material, having favorable DC bias characteristics and high specific resistance, and a production method therefor. An inorganic insulative powder (3) and a coated powder obtained by coating a soft magnetic powder (1) that is coated with an insulative film (4) with a silicone resin (2) are uniformly mixed, and the resultant mixture is molded and fired. By uniformly mixing the inorganic insulative powder (3) and the coated powder obtained by coating the soft magnetic powder that is coated with the insulative film (4) with the silicone resin (2), rupture of the insulative film due to the inorganic insulative material when molding pressed powder is prevented. By uniformly dispersing the inorganic insulative material while high specific resistance is maintained, the gap between molded soft magnetic powder particles is uniformly maintained. As a result, a composite soft magnetic material is provided having high specific resistance and favorable DC bias characteristics.
H01F 1/20 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittage; Appareils spécialement adaptés à cet effet
B22F 3/24 - Traitement ultérieur des pièces ou objets
H01F 1/26 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre comprimées, frittées ou agglomérées les particules étant isolées au moyen de substances organiques macromoléculaires
H01F 1/33 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux particules métalliques ayant un revêtement d'oxyde
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
[Technical Problem] Provided is an oil pump rotor that can embody the improvement of noiseless properties and volume effects. [Technical Solution] When a base circle (bi) of an inner rotor has a diameter (φbi), a first external rolling circle (Di) has a diameter (φDi), a first internal rolling circle (di) has a diameter (φdi), a base circle (bo) of an outer rotor has a diameter (φbo), a second external rolling circle (Do) has a diameter (φDo), a second external rolling circle (do) has a diameter (φdo), and an amount of eccentricity between the inner rotor and an outer rotor is e, the following formulas are satisfied: φbi = n·(φDi ＋ φdi) and φbo ＝ (n + 1)·(φDo ＋ φdo), and either φDi ＋ φdi = 2e or φDo ＋ φdo = 2e, and furthermore, φDo＞φDi, and φdi＞φdo. When a clearance between the inner rotor and the outer rotor is t, in a case of φDi ＋ φdi = 2e, the following formula is satisfied: 0.3 ≦ ((φDo ＋ φdo) - (φDi ＋ φdi ))·(n +1)/t ≦ 0.6. In the case of φDo ＋ φdo = 2e, the following formula is satisfied: 0.3 ≦ ((φDo ＋ φdo) - (φDi ＋ φdi))·n/t ≦ 0.6.
F04C 2/10 - Machines ou pompes à piston rotatif du type à engrènement extérieur, c. à d. avec un engagement des organes coopérants semblable à celui d'engrenages dentés du type à axe interne, l'organe externe ayant plus de dents ou de parties équivalentes de prise, p.ex. de rouleaux, que l'organe interne
F04C 15/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT; POMPES À DÉPLACEMENT POSITIF, À PISTON ROTATIF OU OSCILLANT - Parties constitutives, détails ou accessoires des "machines", des pompes ou installations de pompage non couverts par les groupes
There is provided a sliding part in which a surface coverage ratio of copper in the sliding part increases. A bearing which is the sliding part is formed by filling the raw powder into the filling portion of the forming mold, compacting the raw powder to form a powder compact, which is sintered. A copper-based raw powder is composed of a copper-based flat raw powder whose diameter is smaller than that of an iron-based raw powder and an aspect ratio larger than that of the iron-based raw powder, and a copper-based small-sized raw powder whose diameter is smaller than that of the copper-based flat raw powder. The copper is allowed to segregate at the surface of the sliding part. The surface of the bearing is covered with the copper-based small-sized raw powder and the copper-based flat raw powder, thereby the surface coverage ratio of copper can be increased.
F16C 33/14 - Procédés particuliers de fabrication; Rodage
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
75.
COMPOSITE SOFT MAGNETIC MATERIAL HAVING LOW MAGNETIC STRAIN AND HIGH MAGNETIC FLUX DENSITY, METHOD FOR PRODUCING SAME, AND ELECTROMAGNETIC CIRCUIT COMPONENT
This composite soft magnetic material having low magnetic strain and high magnetic flux density contains pure iron-based composite soft magnetic powder particles, which have been subjected to insulating treatment by means of a magnesium-containing insulating coating film or a phosphate coating film, and Fe-Si alloy powder particles, which contain 11 to 16 mass % of Si, contains 10 to 60 mass % of the Fe-Si alloy powder particles relative to the overall mass of the composite soft magnetic material, and has inter-particle boundary layers. This method for producing a composite soft magnetic material having low magnetic strain and high magnetic flux density comprises blending a pure iron-based composite soft magnetic powder, which has been subjected to insulating treatment by means of a magnesium-containing insulating coating film or a phosphate coating film, and an Fe-Si alloy powder, which contains 11 to 16 mass % of Si, so that the proportion of the Fe-Si alloy powder is 10 to 60 mass % relative to the overall mass of the composite soft magnetic material, compression molding and then firing in a non-oxidizing atmosphere. If the composite soft magnetic powder is subjected to insulating treatment by means of a magnesium-containing insulating coating film, the firing temperature is 500°C to 1000°C, and if the composite soft magnetic powder is subjected to insulating treatment by means of a phosphate coating film, the firing temperature is 350°C to 500°C.
H01F 1/33 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux particules métalliques ayant un revêtement d'oxyde
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
H01F 1/24 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre comprimées, frittées ou agglomérées les particules étant isolées
H01F 1/26 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre comprimées, frittées ou agglomérées les particules étant isolées au moyen de substances organiques macromoléculaires
H01F 27/255 - Noyaux magnétiques fabriqués à partir de particules
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
There is provided a novel sintered sliding member superior in thermal resistance, corrosion resistance and wear resistance. The sintered sliding member of the present invention includes 7.7-30.3% Cu, 2.0-20.0% Sn and 0.3-7.0% boron nitride by mass, with a remainder composed of Ni and unavoidable impurities. The sintered sliding member may further include 0.1-3.0% C or 0.1-0.7% P. A porosity of the sintered sliding member is 5-25%.
Oxide-coated Fe powder for producing various electromagnetic circuit components requiring high resistivity is provided. The oxide-coated Fe powder is a Mg-containing oxide film-coated iron powder coated with an Mg—Fe—O ternary-based deposition film at least containing (Mg, Fe)O. The (Mg,Fe)O is a crystalline MgO-dissolving wustite. The Mg—Fe—O ternary-based oxide deposition film has a sulfur-enriched layer containing a higher concentration of sulfur than that of central portion of the iron powder, fine crystalline texture having a grain size of 200 nm or less, and the outermost surface is substantially composed of MgO. A composite soft magnetic material using the Mg-containing oxide film-coated iron powder is also provided.
Provided is a bearing for motor-powered fuel injection pumps, which is inexpensive, has excellent corrosion resistance and abrasion resistance and is composed of a Cu-Ni-based sintered alloy. The bearing comprises, in mass%, 10-20% of Ni, 5-13% of Sn, 0.1-0.8% of P, 1-6% of C and a reminder made up by Cu and unavoidable impurities, in which an Ni-Sn-Cu-P phase containing 30 mass% or more of Sn is formed on a grain boundary and the porosity of the bearing is 8-18%. The Ni-Sn-Cu-P phase comprises, in mass%, 30-49% of Ni, 10-30% of Cu, 0.5-1.5% of P and a remainder made up by Sn and unavoidable impurities.
Provided is a Cu-based oil-containing sintered bearing which can be used in high-load applications such as a bearing used in an ABS system or a wiper motor system in an automobile, is inexpensive, and has excellent abrasion resistance and seizure resistance. The bearing comprises, in mass%, 5-40% of Ni, 3-15% of Sn, 0.5-4.0% of P, optionally 0.3-5.0% of a solid lubricant, and a remainder made up by Cu and unavoidable impurities, has a metallic structure in which a phase mainly composed of Ni and P is dispersed in a matrix, and has a porosity of 5-25%.
−1 MPa, while optionally tumbling; and a method for producing a composite soft magnetic material from the soft magnetic metal powder coated with a Mg-containing oxide film.
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
Provided is a novel sintered sliding member having excellent heat resistance, corrosion resistance, and abrasion resistance. The sintered sliding member includes, by mass%, 7.7% to 30.3% of Cu, 2.0% to 20.0% of Sn, and 0.3% to 7.0% of boron nitride, with the balance comprising Ni and inevitable impurities. The sintered sliding member optionally includes 0.1% to 3.0% of C or 0.1% to 0.7% of P. Porosity is 5% to 25%.
Provided is a copper-based sintered sliding member that can be used in high-load usage environments. The provided copper-based sintered member, which is age-hardened, comprises 5-30% nickel, 5-20% tin, and 0.1-1.2% phosphorus by mass, with the remainder comprising copper and unavoidable impurities. Abrasion resistance is excellent due to the existence of an alloy phase, at grain boundaries, having higher nickel, phosphorus, and tin concentrations than the mean nickel, phosphorus, and tin concentrations across the entire sintered alloy. This results in reduced cost, as expensive hard particles are not needed, and allows a copper-based sintered sliding member that can be used in high-load usage environments. Even better abrasion resistance can be obtained by including 0.3-10% by mass of at least one of the following solid lubricants: graphite, graphite fluoride, molybdenum disulfide, tungsten disulfide, boron nitride, calcium fluoride, talc, and magnesium silicate mineral powder.
C22C 9/06 - Alliages à base de cuivre avec le nickel ou le cobalt comme second constituant majeur
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
C22C 1/05 - Mélanges de poudre métallique et de poudre non métallique
C22C 9/02 - Alliages à base de cuivre avec l'étain comme second constituant majeur
C22C 32/00 - Alliages non ferreux contenant entre 5 et 50% en poids d'oxydes, de carbures, de borures, de nitrures, de siliciures ou d'autres composés métalliques, p.ex. oxynitrures, sulfures, qu'ils soient soient ajoutés comme tels ou formés in situ
F16C 33/10 - Structures relatives à la lubrification
F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille
83.
SINTERED SLIDER MATERIAL AND PROCESS FOR MANUFACTURE THEREOF
A novel sintered slider material is provided which has excellent wear resistance and has high heat resistance and high corrosion resistance as well. The sintered slider material contains Ni at a content of 41-90%, Sn at a content of 2-20% and/or P at a content of 0.1-1.2% (the content being based on mass), may further contain a solid lubricant at a content of 0.3-10%, and has a balance of Cu and unavoidable impurities. The material includes an alloy phase containing Sn at a concentration higher than the average concentration of Sn in the entire sintered slider material, or an alloy phase containing P at a concentration higher than the average concentration of P in the entire sintered slider material dispersed therein. The aforementioned solid lubricant is constituted of any substance selected from boron nitride, talc, calcium fluoride, graphite, and molybdenum disulfide.
There is provided an oil-impregnated sintered bearing which enable to prevent oil leakage from an outer peripheral surface of an bearing body. The oil-impregnated sintered bearing includes a bearing body which is made of a porous sintered alloy containing vacancies and has a bearing hole in which a rotary shaft can be inserted, wherein the vacancies opened on an outer peripheral surface of the bearing body are crushed. The vacancies may be crushed in the state of a green compact, or in the state of a sintered alloy after sintering the green compact. Consequently, the oil leakage from the outer peripheral surface of the bearing can be prevented, and oil pressure in the bearing hole can be preserved.
Disclosed is a composite soft magnetic material which is characterized by being obtained by mixing, compacting and firing an iron powder, which has been subjected to an insulating treatment, a Sendust alloy powder and a binder. The composite soft magnetic material is also characterized by comprising a main phase in which the iron powder and the Sendust alloy powder are compacted, and a grain boundary phase which is formed around the main phase and is mainly composed of the binder, and by having a ratio of the Sendust alloy in the main phase of 5% by mass or more, but less than 20% by mass, a saturation magnetic flux density at a magnetic field of 10 kA/m of 1 T or more, a coercivity of 260 A/m or less, and an iron loss (at 0.1 T, 10 kHz) of 20 W/kg or less. Consequently, the composite soft magnetic material has characteristics of the Sendust alloy, namely a high magnetic permeability, low coercivity and low iron loss, while maintaining a high saturation magnetic flux density which is intrinsic to an iron powder. Also disclosed is a method for producing the composite soft magnetic material.
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittage; Appareils spécialement adaptés à cet effet
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
H01F 1/147 - Alliages caractérisés par leur composition
H01F 1/22 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre comprimées, frittées ou agglomérées
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
Oxide-coated Fe powder for producing various electromagnetic circuit components requiring high resistivity is provided. The oxide-coated Fe powder is a Mg-containing oxide film-coated iron powder coated with an Mg—Fe—O ternary-based deposition film at least containing (Mg, Fe)O. The (Mg,Fe)O is a crystalline MgO-dissolving wustite. The Mg—Fe—O ternary-based oxide deposition film has a sulfur-enriched layer containing a higher concentration of sulfur than that of central portion of the iron powder, fine crystalline texture having a grain size of 200 nm or less, and the outermost surface is substantially composed of MgO. A composite soft magnetic material using the Mg-containing oxide film-coated iron powder is also provided.
B32B 5/16 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par le fait qu'une des couches est formée de particules, p.ex. de copeaux, de fibres hachées, de poudre
B32B 15/00 - Produits stratifiés composés essentiellement de métal
H01F 1/33 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux particules métalliques ayant un revêtement d'oxyde
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
H01F 1/147 - Alliages caractérisés par leur composition
H01F 1/24 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre comprimées, frittées ou agglomérées les particules étant isolées
H02K 1/02 - MACHINES DYNAMO-ÉLECTRIQUES - Détails du circuit magnétique caractérisés par le matériau magnétique
87.
HIGH-STRENGTH SOFT-MAGNETIC COMPOSITE MATERIAL OBTAINED BY COMPACTION/BURNING AND PROCESS FOR PRODUCING THE SAME
A soft-magnetic composite material obtained by compaction/burning. The burned material is obtained by mixing soft-magnetic particles each coated with a magnesium-containing oxide with at least one of silicone resins, low-melting glasses, and metal oxides, compacting the mixture, burning the compact in a non-oxidizing atmosphere to form a precursor for the soft-magnetic composite compacted/burned material, and then heat-treating the precursor in an oxidizing atmosphere.
H01F 1/33 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux particules métalliques ayant un revêtement d'oxyde
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
H01F 1/24 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre comprimées, frittées ou agglomérées les particules étant isolées
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
A sliding part in which a surface coverage ratio of copper in the sliding part increases. A bearing which is the sliding part is formed by filling the raw powder into the filling portion of the forming mold, compacting the raw powder to form a powder compact, and sintering the powder compact. A copper-based raw powder is composed of a copper-based flat raw powder having an average diameter smaller than that of an iron-based raw powder and an aspect ratio larger than that of the iron-based raw powder, and a copper-based small-sized raw powder having the average diameter is smaller than that of the copper-based flat raw powder. The copper segregates at the surface of the sliding part. In the bearing in which the copper-based flat powder segregates at the surface, the surface is covered with the copper-based small-sized raw powder that has emerged on the surface, as well as the copper-based flat raw powder, thereby it is possible to increase the surface coverage ratio of copper. Furthermore, containing calcium fluoride improves the seizure resistance.
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
A bearing for a motorized fuel pump is made of a Cu—Ni based sintered alloy, composed of: 21 to 35% by mass of Ni, 5 to 12% by mass of Sn, 3 to 7% by mass of C, 0.1 to 0.8% by mass of P, and the balance of Cu and inevitable impurities. A matrix of the bearing is formed with pores with a porosity of 8 to 18%, and the P component is predominantly included at the grain boundary, and free graphite is distributed along the insides of open pores that are open to the surface and extending into the bearing. In this bearing, a Sn rich alloy layer containing equal to or more than 50% by mass of Sn is formed on the insides of the open pores and near openings of the open pores.
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
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
B32B 15/20 - Produits stratifiés composés essentiellement de métal comportant de l'aluminium ou du cuivre
90.
Bearing made of sintered copper alloy for a recirculation exhaust gas flow rate control valve
A bearing with strength and abrasion resistance for a flow rate control valve of an exhaust gas recirculation system of an internal combustion engine. By using a sintered Cu alloy with a composition consisting of, by mass %, Ni: 10 to 30%, Sn: 5 to 12%, C: 3 to 10%, P: 0.1 to 0.9% and Cu and inevitable impurities as the balance, the bearing exhibits a thermal expansion coefficient corresponding to that of a shaft made of austenitic stainless steel. As a result, a bearing with strength and abrasion resistance under high temperature conditions is obtained.
An inner rotor having excellent corrosion resistance, which has an outer gear serving as a component of an internal gear pump, and an outer rotor having excellent corrosion resistance, which has an inner gear engaging with the outer gear. The inner rotor and outer rotor of are made of Cu—Ni-based sintered copper alloy that contains 12 to 50% by mass of Ni, 5 to 20% by mass of Sn, 0.5 to 5% by mass of C, and if necessary, further contains 5 to 20% by mass of Zn, 0.1 to 0.9% by mass of P, and a balance being Cu and inevitable impurities.
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittage; Appareils spécialement adaptés à cet effet
92.
Oil-impregnated sintered bearing and method of producing the same
An oil-impregnated sintered which does not damage rotating shaft and itself and has a high durability even in the case that the rotating shaft is inclined in the bearing by a large shear load applied thereto, and a method of manufacturing an oil-impregnated sintered bearing which exhibits center deviation-suppressing action of the bearing satisfactorily by accurately forming a bearing hole in an intermediate completely sintered are disclosed.
A surface treatment layer 11 is formed on a surface 10 of a through-hole 1 so that the surface 10 has an angle X of contact with solution L which is smaller than an angle Y of contact of a die 2 per se with the solution L. When the solution L is applied, the wetting action of the solution L relative to the through-hole 1 is improved so that the solution L can be extended over the surface treatment layer 11, eventually over the entire surface of the through-hole 1. Consequently, the entire surface thereof can be formed with a crystallized layer by performing water evaporation. As a result, molding at higher temperature can be realized, and high-density compacts can be stably obtained. Further, the solution L in which the lubricant is dissolved in a solvent into a homogeneous phase, is applied to a molding portion 1A, and then evaporated to thereby form crystals thereon, thus forming the crystallized layer.
B29C 43/02 - Moulage par pressage, c. à d. en appliquant une pression externe pour faire couler la matière à mouler; Appareils à cet effet pour la fabrication d'objets de longueur définie, c. à d. d'objets séparés
