The invention relates to a cemented carbide material, in particular a hard metal, comprising 70-95 wt.%, preferably 80-95 wt.%, tungsten carbide in dispersed form, and a binder phase, the binder phase comprising metallic binder material, the metallic binder material comprising Co, the binder phase comprising intermetallic phase material and/or the dissolved elements Ni and Al, said intermetallic phase material, if present, being formed according to the structural formula (M,Y)3 (Al,X), where M = Ni, Y = Co and/or another constituent, and X = tungsten and/or another constituent, said binder phase having the following chemical element composition: Ni > 25 wt.%, Al > 4 wt.%, and the remainder Co and dissolved binder constituents, for example W and/or C. Such a cemented carbide material is characterised by a high resistance to wear and at the same time a high breaking strength.
B22F 3/14 - Both compacting and sintering simultaneously
B22F 3/24 - After-treatment of workpieces or articles
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B22F 9/04 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
C22C 1/05 - Mixtures of metal powder with non-metallic powder
C22C 29/06 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
The invention relates to a cemented carbide material, in particular a hard metal, comprising 70-95 wt.% tungsten carbide in dispersed form, and a binder phase, the binder phase comprising metallic binder material and intermetallic phase material, the proportion of metallic binder material in the cemented carbide material being 2-28 wt.%, the proportion of intermetallic phase material in the cemented carbide material being 2-28 wt.%, the metallic binder material comprising Co, the intermetallic phase material being formed according to the structural formula (M,Y)3 (Al,X), where M = Ni, Y = Co and/or another constituent, and X = tungsten and/or other constituent. Such a cemented carbide material is characterised by particularly good resistance to wear.
B22F 3/14 - Both compacting and sintering simultaneously
B22F 3/24 - After-treatment of workpieces or articles
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B22F 9/04 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
C22C 1/05 - Mixtures of metal powder with non-metallic powder
C22C 29/06 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
The invention relates to a method for manufacturing a cemented-carbide body, wherein: in a mixing and/or grinding process, preferably in a wet grinding process, tungsten carbide powder (WC powder) and metal binder material, comprising cobalt powder (Co), nickel (Ni) and aluminum (Al), are mixed to form a powder mixture; a green compact is pressed from at least part of the powder mixture; and the green compact is sintered in a sintering step under the influence of temperature and pressure, such that, after a cooling step following the sintering step, the cemented-carbide body is formed. According to the invention, in order to provide an easy-to-control and reliable method for manufacturing a cemented-carbide body characterized by improved wear resistance and, at the same time, high fracture strength, nickel aluminide, preferably nickel aluminide powder, more particularly Ni3Al powder, is added, as an intermetallic phase material, to the mixing and/or grinding process.
B22F 3/14 - Both compacting and sintering simultaneously
B22F 3/24 - After-treatment of workpieces or articles
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B22F 9/04 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
C22C 1/05 - Mixtures of metal powder with non-metallic powder
C22C 29/06 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
A shear bar is provided having a carrier comprising a cutting region and a plurality of cutting elements set alongside one another therein. The cutting elements comprising a partial edge. Some of the partial edges form a cutting edge. The cutting edge form a transition between a cutting surface defined by the cutting elements, extending transversely to a cutting direction, and an exposed surface extending in the cutting direction and adjoins the cutting edge. The shear bar is provided with an infeed element for break-resistant. The infeed element is sintered with an infeed bevel, and is provided on/in the row of cutting elements. The infeed bevel is carried over indirectly/directly into the cutting edge and is arranged at a tilt with respect to the cutting edge in a manner that it is arranged with a setback with respect to the exposed surface and toward the cutting surface.
A01D 34/42 - Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a horizontal axis, e.g. cutting-cylinders
A01F 29/06 - Cutting apparatus specially adapted for cutting hay, straw or the like having rotating knives with their cutting edges on a cylinder surface, e.g. of the helical-type
The present invention relates to a milling pick, in particular a straight shank pick with a pick head (40) comprising a pick bit (30) made of hard material as the cutting element, wherein a pick shaft (10) is further coupled directly or indirectly to the pick head (40), a wear protection disk (20) with a passage, in particular a bore, slipped on the pick shaft (11), wherein the wear protection disk (20) on the side facing the pick head (40) comprises a countersurface (23) designed to abut a support surface (41) of the pick head (40), the wear protection disk, away from the countersurface (23), comprising a bottom support surface (21) that is parallel to the countersurface (23), and having a disk thickness (d) between the countersurface (23) and the support surface (21), the milling pick being characterised in that the ratio between the diameter of the pick shaft (10) in the area of the passage (25) and the thickness (d) of the disk ranges from 1.5 to 3.75, preferably from 2 to 3.
E21C 35/197 - Means for fixing picks or holders using sleeves, rings or the like, as main fixing elements
B28D 1/18 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
The invention relates to a cultivator for an agricultural soil processing machine, comprising a base part which has a cutting element on a cutter support. The base part has at least one screw receiving area for securing to a support, in particular a tine of the agricultural soil processing machine. The screw receiving area is designed as a blind hole with an inner thread and is recessed into a cultivator support surface aligned opposite the tool advancing direction of the cultivator, or the screw receiving area is designed as a through-bore with an inner thread and is covered by at least one wear protection element in the tool advancing direction. The cultivator is characterized by reduced wear.
The invention relates to a pick, in particular a round-shank pick, having a pick head and a pick shank, having a supporting element which has a seat surface on its underside and a centering extension that projects beyond the seat surface, wherein the centering extension has a centering surface that extends in an inclined manner with respect to the longitudinal center axis of the pick and transitions indirectly or directly into the seat surface, and wherein the supporting element is pierced along the longitudinal center axis by a mounting hole with an inside diameter Di for receiving the pick shank. In this case, provision is made for a collar height, measured in the direction of the longitudinal center axis between an end, facing away from the seat surface, of the centering extension and the seat surface or between the end of the centering extension and an inner termination of a recess that is integrally formed in the supporting element in an indented manner with respect to the seat surface, to be configured such that the ratio between the inside diameter Di of the mounting hole in the supporting element and the collar height is less than 8, and/or that the collar height is greater than an axial clearance of the pick mounted in a pick holder. The pick is distinguished by reduced wear.
The invention relates to a tool (10, 20) for fastening on a machine, in particular a screen machine, a road groover, or similar, the tool having a tool body (12, 50, 53), on which a functional unit (11, 11.1, 11.2, 11.4, 40, 30) comprising at least two materials of different damping properties is fastened, one material being a mechanically resistant material (11, 11.1, 11.2, 31, 32) and an intermediate material (11.4, 42, 43) being provided between the mechanically resistant material (11, 11.1, 11.2, 31, 32) and the tool body (12, 50, 53). An improved wear resistance compared to the wear resistance known from prior art is achieved in that the modulus of elasticity of the intermediate material (11.4, 42, 43) amounts to 30 % of the modulus of elasticity of the mechanically resistant material (11, 11.1, 11.2, 31, 32).
B07B 1/46 - Constructional details of screens in general; Cleaning or heating of screens
B23P 15/28 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
B28D 1/18 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
The invention relates to a tool (20) for securing on a tool holder (30) of a machine tool for machining vegetable and/or mineral materials, comprising a tool body (200) which is equipped with a machining attachment that points in a tool feeding direction (V) and comprises a cutting region, in particular a cutting element (20.1), and on which a fitting element (50) for meshing with a mating element (60) provided on the tool holder (30) is formed on a support surface (22) facing the tool holder (30). The dependability and operational reliability when using a machine tool can be ensured if the fitting element (50) has at least two molded regions (51, 53) with different contour regions over the vertical course (x) of the fitting element with respect to the support surface (22).
B02C 18/14 - Disintegrating by knives or other cutting or tearing members which chop material into fragments; Mincing machines or similar apparatus using worms or the like with rotating knives within horizontal containers
The invention relates to a soil-working system for an agricultural soil-working machine, comprising a base element (2), which is designed to hold a bottom element (3), wherein the bottom element (3) has at least one cutting element (4), and comprising an injection element (5) for introducing substances into the soil material to be worked, wherein the soil-working elements are detachably or undetachably connected to a carrier element (6) of the soil-working machine, wherein the detachable connections form an interlocking and/or frictional connection and wherein the elements at least partially form a protection against abrasive wear in relation to each other.
The invention relates to a pick, in particular a round-shank pick, comprising a pick head and a pick shank, wherein the pick head consists of at least a base part and a cutting element, which is connected to the base part and is composed of a hard material, in particular hard metal, wherein the base part has a wear-resistant layer on the outer surface thereof at the connection to the cutting element, which wear-resistant layer covers at least one segment of the outer surface of the base part facing the cutting element and wherein an end face of the wear-resistant layer facing the cutting element is covered by the cutting element. According to the invention, the base part has an axially oriented cut-out for receiving a fastening segment of the cutting element, the base part has a counter surface facing the cutting element and extending around the cut-out, and the counter surface and the end face of the wear-resistant layer form a continuous flat surface. The invention further relates to two methods for producing such a pick. The pick formed in such a way has low abrasive wear.
E21C 35/183 - Mining picks; Holders therefor with inserts or layers of wear-resisting material
E01C 23/08 - Devices or arrangements for working the finished surface; Devices for repairing the surface of damaged paving for removing high spots or material bonded to the surface, e.g. markings
E21B 10/46 - Drill bits characterised by wear resisting parts, e.g. diamond inserts
12.
TOOL SYSTEM FOR AN AGRICULTURAL GROUND CULTIVATING MACHINE
There is provided herein a tool system for an agricultural ground cultivating machine. The tool system has a share tip, which is arranged on a carrier element, having a base part as the basic body and wing shares, which are mounted laterally on the carrier element. The specific arrangement of the present tool system ensures that the fastening plate of the wing shares or the fastening element of the detachable wing shares are advantageously protected by the base part, which can provide significantly longer life service than conventional prior art tool systems and improved wear performance which is matched to the components of the tool system with respect to one another. There is also provided herein a corresponding wing share.
The invention relates to a blade tip and to a tool combination having a blade tip for an agricultural soil cultivation machine, wherein the blade tip has a base part which has a cutter on a cutter carrier, and a guiding element attached to the blade tip, wherein the blade tip has a screw receptacle for fastening to a tine of the agricultural soil cultivation machine. Here, provision is made for the base part to have a receptacle which is covered by means of a covering portion in the tool feeding direction (V), for the guiding element to have a plug attachment which is held in the receptacle, and for a form-fitting connection, which prevents any movement of the guiding element out of the receptacle, to act in the region of the receptacle between the blade tip and the guide element.
The invention relates to a beet puller share having a base part which comprises a cutting edge, wherein one or several hard material elements which form deflecting faces on their top surfaces are arranged in the region of the cutting edge, wherein the deflecting faces transition into a surface region of the base part, and wherein said surface region forms a beet guiding zone, in particular a beet ejecting zone. To improve the service life of the beet puller share and to improve the harvest yield connected therewith, it is provided according to the invention that the hard material elements are realized as cutting elements which form the cutting edge at least in regions and that the deflecting face of at least one cutting element is convexly curved and merges into the convexly curved beet guiding zone, in particular beet ejecting zone.
The invention relates to a tool combination, comprising a share tip and an adjoining guide element, wherein the share tip and the guide element have threaded receptacles for fastening to a tine. An easy and secure fastening of both the share tip and the guide element is achieved according to the invention in that the guide element has a threaded receptacle which is covered in the tool advancement direction by means of a cover portion of the share tip.
The invention relates to a soil working tool, in particular a cultivator tip, having a carrier (10) which bears a primary cutting element (20) and at least two secondary cutting elements (21) on a cutter holder (13), wherein both the primary cutting element (20) and the secondary cutting elements (21) comprise a cutting edge (20.3, 21.3). In order to optimize the penetration so as to achieve better cutting results, the cutting edges of the secondary cutting elements (21) are arranged offset with respect to the cutting edges of the primary cutting element (20).
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