US20040234820A1 - Wear-resistant member having a hard composite comprising hard constituents held in an infiltrant matrix - Google Patents

Wear-resistant member having a hard composite comprising hard constituents held in an infiltrant matrix Download PDF

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Publication number
US20040234820A1
US20040234820A1 US10/444,734 US44473403A US2004234820A1 US 20040234820 A1 US20040234820 A1 US 20040234820A1 US 44473403 A US44473403 A US 44473403A US 2004234820 A1 US2004234820 A1 US 2004234820A1
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Prior art keywords
weight percent
mesh
particle size
hard
particles
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US10/444,734
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English (en)
Inventor
Shivanand Majagi
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Kennametal Inc
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Kennametal Inc
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Priority to US10/444,734 priority Critical patent/US20040234820A1/en
Priority to US10/455,492 priority patent/US6984454B2/en
Assigned to KENNAMETAL INC. reassignment KENNAMETAL INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MAJAGI, SHIVANAND I.
Priority to DE602004030783T priority patent/DE602004030783D1/de
Priority to PL379042A priority patent/PL379042A1/pl
Priority to AT04809399T priority patent/ATE493371T1/de
Priority to BRPI0410582-6A priority patent/BRPI0410582A/pt
Priority to KR1020057022377A priority patent/KR20060105430A/ko
Priority to AU2004276221A priority patent/AU2004276221B2/en
Priority to PCT/US2004/016042 priority patent/WO2005030667A2/en
Priority to JP2006514922A priority patent/JP2006526077A/ja
Priority to EP09012865A priority patent/EP2145866A1/de
Priority to CNA2004800167521A priority patent/CN1805845A/zh
Priority to EP04809399A priority patent/EP1631531B1/de
Publication of US20040234820A1 publication Critical patent/US20040234820A1/en
Abandoned legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24After-treatment of workpieces or articles
    • B22F3/26Impregnating
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/04Making non-ferrous alloys by powder metallurgy
    • C22C1/05Mixtures of metal powder with non-metallic powder
    • C22C1/051Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C29/00Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06Alloys based on carbides, oxides, nitrides, borides, 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
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C29/00Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06Alloys based on carbides, oxides, nitrides, borides, 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
    • C22C29/08Alloys based on carbides, oxides, nitrides, borides, 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
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C29/00Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/14Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on borides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00Aspects linked to processes or compositions used in powder metallurgy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554Wear resistance
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12486Laterally noncoextensive components [e.g., embedded, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771Transition metal-base component
    • Y10T428/12861Group VIII or IB metal-base component
    • Y10T428/12896Ag-base component
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771Transition metal-base component
    • Y10T428/12861Group VIII or IB metal-base component
    • Y10T428/12903Cu-base component
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree

Definitions

  • the invention pertains to a wear-resistant member.
  • the invention concerns a wear member that includes a hard composite member that is securely affixed to at least a portion of a support member.
  • the hard composite comprises a plurality of hard components within a mold wherein an infiltrant alloy that has been infiltrated into the mass of the hard components.
  • U.S. Pat. No. 5,589,268 to Kelley et al. (U.S. Pat. No. 5,733,649 to Kelley et al. was a divisional thereof) pertained to a composite that comprised at least one discrete hard element held by a matrix powder wherein an infiltrant alloy had been infiltrated into the hard components.
  • One suggested infiltrant alloy was a copper-nickel-zinc alloy identified as MACROFIL 65 wherein literature from Belmont Metals, Inc. showed that the melting point was 1100 degrees Centigrade.
  • Another suggested infiltrant alloy was a copper-manganese-nickel-zinc-boron-silicon alloy identified as MACROFIL 53.
  • the MACROFIL 53 was usually infiltrated at about 2200 degrees Fahrenheit (1204 degrees Centigrade).
  • U.S. Pat. No. 5,733,664 to Kelley et al. was a continuation-in-part to the '268 Kelley et al. patent.
  • the '664 Kelley et al. patent also disclosed the MACROFIL 53 alloy and the MACROFIL 65 alloy.
  • the hard composite attaches to a support member to form a wear member.
  • the purpose of the hard composite is to provide wear resistance to the combination of the hard composite and the support member.
  • the support member is intended to provide toughness to the wear member.
  • the invention is a tough wear-resistant hard member that includes a hard composite member and a support that has a surface area adjacent to the hard composite member wherein the hard composite member is affixed to the support over at least a portion of the adjacent surface area of the support.
  • the hard composite member includes a plurality of discrete hard constituents distributed in the hard composite member wherein each one of the discrete hard constituents is of a size so as to have a surface area between about 0.001 square inches and about 16 square inches.
  • the hard composite member further contains a matrix powder that includes particles wherein substantially all of the hard particles have a size smaller than the size of the hard constituents.
  • the hard composite member further includes an infiltrant alloy having a melting point between about 500 degrees Centigrade and about 1400 degrees Centigrade wherein the infiltrant alloy is infiltrated under heat into a mixture of the discrete hard constituents and the matrix powder so as to not effectively degrade the hard constituents upon infiltration, whereby the hard constituents and the matrix powder and the infiltrant alloy are bonded together to form the hard composite member.
  • the support is made of a material that is bondable with the infiltrant alloy whereby the infiltrant alloy forms a joint at the joinder of the support and the hard composite member.
  • the invention is A tough wear-resistant hard member that comprises a support having a surface area and a hard composite member that is affixed to the support over at least a portion of the surface area of the support.
  • the hard composite member comprises a plurality of discrete hard constituents distributed in the hard composite member wherein each one of the discrete hard constituents is of a size so as to have a surface area between about 0.001 square inches and about 16 square inches.
  • the discrete hard constituents comprise one or more of: sintered cemented tungsten carbide wherein a binder includes one or more of cobalt, nickel, iron and molybdenum, coated sintered cemented tungsten carbide wherein a binder includes one or more of cobalt, nickel, iron and molybdenum, and the coating comprises one or more of nickel, cobalt, iron and molybdenum, one or more of the carbides, nitrides, and borides of one or more of titanium, niobium, tantalum, hafnium, and zirconium, tungsten carbide, one or more of the coated carbides, coated nitrides, and coated borides of one or more of titanium, niobium, tantalum, hafnium, and zirconium wherein the coating comprises one or more of nickel, cobalt, iron and molybdenum; coated tungsten carbide wherein the coating comprises one or more of nickel, cobalt, iron and molybdenum
  • the hard composite member further comprises a matrix powder comprising hard particles wherein substantially all of the hard particles of the matrix powder have a smaller size than the hard constituents.
  • the hard composite member further comprises an infiltrant alloy having a melting point between about 500 degrees Centigrade and about 1400 degrees Centigrade wherein the infiltrant alloy is infiltrated under heat into a mixture of the discrete hard constituents and the matrix powder so as to not effectively degrade the hard constituents upon infiltration, whereby the hard constituents and the matrix powder and the infiltrant alloy are bonded together to form the hard composite member.
  • the support is made of a material that is bondable with the infiltrant alloy whereby the infiltrant alloy forms a joint at the joinder of the support and the hard composite member.
  • the invention is a tough wear-resistant hard member that comprises a hard composite member and a support having a surface area adjacent to the hard composite member.
  • the hard composite member is affixed to the support over at least a portion of the adjacent surface area of the support.
  • the hard composite member comprises a plurality of discrete hard constituents distributed in the hard composite member, each one of the discrete hard constituents is of a size so as to have a surface area between about 0.001 square inches and about 16 square inches.
  • the hard composite member further comprises a matrix powder comprising hard particles wherein substantially all of the hard particles have a size smaller than the size of the hard constituents.
  • the hard composite member further comprises an infiltrant alloy having a melting point between about 500 degrees Centigrade and about 1400 degrees Centigrade wherein the infiltrant alloy is infiltrated under heat into a mixture of the discrete hard constituents and the matrix powder so as to not effectively degrade the hard constituents upon infiltration, whereby the hard constituents and the matrix powder and the infiltrant alloy are bonded together to form the hard composite member.
  • the support is made of a material that is bondable with the infiltrant alloy whereby the infiltrant alloy forms a joint at the interface of the support and the hard composite member.
  • FIG. 1 is an isometric view of a tough wear-resistant member in the form of a plate wherein the tough wear-resistant member comprises a hard composite that provides wear resistance and contains hard constituents held in an infiltrant matrix and a support (e.g., steel) that provide toughness;
  • FIG. 2 is a schematic view of a hard member that comprises a hard composite and a support wherein the matrix holds the hard constituents to form the hard composite and there is a bond between the hard composite and the support;
  • FIG. 3 is a schematic view of the components of the hard member of FIG. 2 in a mold prior to the infiltration of the matrix material through the mass of hard constituents wherein the infiltrant matrix material is on top of the mass of hard constituents, and the mass of hard constituents is positioned on a support;
  • FIG. 4 is an isometric view of a specific embodiment of a hard member that comprises a hard composite and a support wherein a plurality of sintered cemented carbide compacts that comprise a part of the hard composite have at least a portion thereof that projects from the surface of the hard composite;
  • FIG. 5 is a cross-sectional view of a wear resistant tube wherein the interior layer of the pipe comprises a support and the exterior layer of the pipe comprises a hard composite so that the exterior surface possesses wear-resistant properties;
  • FIG. 6 is a cross-sectional view of a wear-resistant tube wherein the exterior layer of the tube comprises a support and the interior layer of the tube comprises a hard composite so that the interior layer possesses wear-resistant properties; and
  • FIG. 7 is an isometric view of a center feed disk for an impeller rock crusher wherein the disk that presents an inner portion that presents a hard composite with a circular wear surface and a cylindrical wear surface and an outer portion that presents a circular or doughnut-like wear surface wherein the support member presents a non-planar interface (or surface) for joinder with the hard composite;
  • FIG. 7A is a cross-sectional view of the center feed disk of FIG. 7 illustrating the non-planer interface between the hard composite and the support;
  • FIG. 8 is a cross-sectional view of a tough wear resistant member wherein the interface between the hard composite and the support presents a roughened surface
  • FIG. 9 is a cross-sectional view of a tough wear resistant member wherein the support contains holes therein with a portion of the hard composite contained within the holes.
  • Tough wear-resistant member 20 is in the form of a plate; however, one must appreciate that the tough wear-resistant member can take on any one of a number of different shapes or geometries to accommodate different applications. In this regard, some of the later embodiments illustrated herein present different geometries.
  • the tough wear-resistant hard member 20 comprises a support 22 and a hard composite 24 .
  • the hard composite 24 is affixed to the support 22 .
  • the hard composite 24 provides the wear resistant properties and the support 22 provides the toughness properties.
  • FIG. 2 illustrates the tough wear-resistant member 20 of FIG. 1 in schematic fashion so as to show a cross section of the hard member 20 .
  • FIG. 3 is a schematic view that shows the general relative positioning of the components in the mold prior to the formation of the tough wear resistant member 20 of the embodiment of FIG. 1.
  • the support 22 may be made from any one of many materials that possess properties so as to provide toughness properties (as well as support) for the tough wear-resistant member 20 . These materials include (without limitation) ferrous alloys and non-ferrous alloys, as well as other supports that may require a wear-resistant surface. Specific exemplary materials for the support comprise various steels such as, for example, AISI 4140 steel and AISI 316 stainless steel. The nominal composition (in weight percent) for the AISI 4140 steel is: 0.38-0.43% carbon, 0.75-1.00% manganese, 0.035% phosphorous, 0.040% sulfur, 0.15-0.35% silicon, 0.80-1.10% chromium, 0.15-0.25% molybdenum and the balance iron.
  • the nominal composition (in weight percent) for 316 stainless steel is: maximum carbon 0.08%, maximum manganese 2.00%, maximum phosphorous 0.030%, maximum silicon 0.030%, 10.00-16.00% nickel, 16.00-18.00% chromium, 2.00-3.00% molybdenum, and the balance iron.
  • the support could also comprise a casting having hard particles therein. Although this aspect will be further discussed hereinafter, the support should also possess properties so that it is bondable with the infiltrant alloy whereby there is a secure bond between the support 22 and the hard composite 24 .
  • the hard composite 24 comprises a plurality of discrete hard constituents (described hereinafter) wherein these hard constituents are held within a matrix designated by bracket 30 .
  • the matrix comprises a mass of matrix powder that comprises different kinds of hard particles and/or powders, and an infiltrant alloy 31 (FIG. 3) that has been infiltrated into the mass of the matrix powder and the hard constituents under the influence of heat and sometimes under additional environmental influences such as, for example, in a pressure or in a vacuum.
  • the infiltrant alloy may be infiltrated into the mass of hard constituents and matrix powder under various atmospheres (e.g., argon, helium, hydrogen, and nitrogen).
  • the hard constituents comprise sintered cemented carbide compacts 34 that are shown in schematic in FIGS. 2 and 3 as a triangle-shaped member.
  • this hard constituent presents a specific pre-determined shape. This shape can vary depending upon the specific application for the tough wear-resistant hard member. Powder metallurgical techniques allow for the shape of the compact 34 to take on any one of a number of shapes or geometries. As an alternative, the hard compact 34 could crushed to obtain hard constituents.
  • the compact 34 is of a size so as to have a surface area that ranges between about 0.001 square inches (0.006 square centimeters) and about 16 square inches (103 square centimeters). Applicant also contemplates that the compact may be of a size that ranges between about 0.005 square inches (0.03 square centimeters) and about 5 square inches (33 centimeters). Applicant further contemplates that the compact may be of a size that ranges between about 0.0005 square inches (0.003 square centimeters) and about 0.5 square inches (0.003 centimeters).
  • FIGS. 1 through 3 shows that each one of the sintered cemented carbide compacts 34 is selectively positioned within the matrix of the hard composite 24 .
  • FIG. 3 shows schematically, one generally accomplishes such orientation by selectively positioning the sintered cemented carbide compacts 34 in the mold prior to infiltration.
  • the compacts 34 may cover between about 0.5 percent to about 90 percent of the surface area of the wear-resistant hard member.
  • the location of the sintered cemented carbide compacts 34 is in a region near the surface of the hard composite 24 .
  • sintered cemented carbide compacts 34 are also located in a region near the interface between the hard composite 24 and the support 22 whereby these compacts are on the surface of the support 22 .
  • Some of the sintered cemented carbide compacts 34 are also located above the sintered cemented carbide compacts 34 on the support 22 .
  • the sintered cemented carbide compacts 34 are flush with the surface of the hard composite 24 so that they do not project therefrom. Applicant does not intend to restrict the invention to the specific positioning of the hard constituents in the hard composite.
  • the hard constituents may be uniformly (or non-uniformly or randomly) distributed throughout the volume of the hard composite.
  • One composition of the sintered cemented carbide compact 34 is cobalt cemented tungsten carbide wherein the cobalt ranges between about 0.2 weight percent and about 6 weight percent of the cobalt cemented tungsten carbide compact and tungsten carbide is the balance of the composition.
  • Another composition for the sintered cemented carbide compact 34 is cobalt cemented tungsten carbide wherein the cobalt ranges between about 6 weight percent and about 30 weight percent of the cobalt cemented tungsten carbide compact and tungsten carbide is the balance of the composition.
  • the sintered cemented carbide compact may comprise cobalt (10 weight percent cobalt) cemented tungsten carbide.
  • the matrix powder comprises a crushed cemented carbide particle 36 that is shown in schematic in FIGS. 2 and 3 as an oval-shaped member, and a crushed cast carbide particle 38 that is shown in schematic in FIGS. 2 and 3 as a circular-shaped member.
  • the crushed cemented carbide particles 36 may be present in a size range for these crushed cemented carbide particles equal to ⁇ 325+200 mesh. Another size range for these crushed cemented carbide particles is ⁇ 80+325 mesh. The standard to determine the particle size is by using sieve size analysis and the Fisher sub-sieve size analyzer for ⁇ 325 mesh particles.
  • One composition for the crushed cemented carbide particles is cobalt cemented tungsten carbide wherein the cobalt ranges between about 6 weight percent and about 30 weight percent of the cobalt cemented tungsten carbide material and tungsten carbide is the balance of the material.
  • Another preferred composition for crushed cemented carbide particles is cobalt cemented tungsten carbide wherein the cobalt ranges between about 0.2 weight percent and about 6 weight percent of the cobalt cemented tungsten carbide material and tungsten carbide is the balance of the material.
  • crushed cast carbide particles 38 one size range for these particles is ⁇ 325 mesh. Another size range for these particles is ⁇ 80 mesh.
  • One composition for these particles is cast tungsten carbide. Applicant contemplates that the crushed cast carbide particles may vary in composition throughout a particular hard composite depending upon the specific application. Applicant further contemplates that other cast carbides or hard materials are suitable for use in place or along with the crushed cast carbide particles 38 .
  • the matrix powder may further include in addition to crushed cemented carbide particles and/or crushed cast carbide particles, any one or more of the following: crushed carbide particles (e.g., crushed tungsten carbide particles that have a size of ⁇ 80+325 mesh), steel particles that have an exemplary size of ⁇ 325 mesh, carbonyl iron particles that have an exemplary size of ⁇ 325 mesh, cemented carbide powder, and coated (e.g., nickel coating) cemented carbide particles, and nickel-coated tungsten carbide particles ( ⁇ 80+325 mesh).
  • crushed carbide particles e.g., crushed tungsten carbide particles that have a size of ⁇ 80+325 mesh
  • steel particles that have an exemplary size of ⁇ 325 mesh
  • carbonyl iron particles that have an exemplary size of ⁇ 325 mesh
  • cemented carbide powder and coated (e.g., nickel coating) cemented carbide particles
  • nickel-coated tungsten carbide particles ⁇ 80+325 mesh
  • the crushed cemented carbide particles and the cast carbide particles are generally positioned throughout the volume of the mold.
  • the infiltrant alloy 31 has a melting point that is low enough so as to not degrade the hard constituents upon contact therewith during the infiltration process.
  • the infiltrant alloy has a melting point that ranges between about 500 degrees Centigrade and about 1400 degrees Centigrade.
  • the infiltrant alloys may have a melting point that ranges between about 600 degrees Centigrade and about 800 degrees Centigrade.
  • the infiltrant alloys may have a melting point that ranges between about 690 degrees Centigrade and about 770 degrees Centigrade.
  • the infiltrant alloys may have a melting point below about 700 degrees Centigrade.
  • Exemplary general types of infiltrant alloys include copper-based alloys such as, for example, copper-silver alloys, copper-zinc alloys, copper-nickel alloys, copper-tin alloys, and nickel-based alloys including nickel-copper-manganese alloys.
  • Exemplary infiltrant alloys are set forth in Table 1 herein below. TABLE 1 Compositions of Infiltrant Alloys in Weight Percent Liquidus Solidus (Flow Alloy/ (Melting Point) Composition Cu Ni Zn Mn Ag Sn Point)(° C.) ° C.
  • a tough wear-resistant member 50 that has a hard composite 52 affixed to a support 54 .
  • the hard composite 52 contains a plurality of sintered cemented carbide compacts 56 that project from one surface thereof.
  • the support typically is made from 4140 steel.
  • the hard composite body 52 typically comprises sintered cemented carbide compacts 56 that typically have a composition of 10 weight percent cobalt and the balance tungsten carbide.
  • the matrix powder typically includes tungsten carbide, chromium carbide, as well as cobalt and nickel in the form of a binder alloy for the carbides and/or a coating on the carbides.
  • One typical infiltrant alloy has a composition (weight percent) of copper(53%)-nickel(15%)-manganese(24%)-zinc (8%) and a melting point equal to about 1150 degrees Centigrade.
  • a tough wear-resistant member 60 that has a cylindrical hard composite 62 affixed to a cylindrical support 64 .
  • the support 64 typically is made from either 316 stainless steel or 4140 steel.
  • the hard composite body 62 typically comprises hard constituents that comprise one or more sintered carbides wherein these carbides include tungsten, titanium, niobium, tantalum, hafnium, chromium and zirconium.
  • the matrix powder typically comprises one or more sintered carbides, crushed sintered carbides, cast carbide, crushed carbides, tungsten carbide powders and chromium carbide powders.
  • the infiltrant alloy has a composition (weight percent) of copper(53%)-nickel(15%)-manganese(24%)-zinc(8%) and a melting point equal to about 1150 degrees Centigrade.
  • a tough wear-resistant member 70 that has a cylindrical hard composite 72 affixed to a cylindrical support 74 .
  • the support typically is made from 4140 steel or 316 stainless steel.
  • the hard composite body 62 typically comprises hard constituents that comprise one or more sintered carbides wherein these carbides include tungsten, titanium, niobium, tantalum, hafnium, chromium and zirconium.
  • the matrix powder typically comprises one or more sintered carbides, crushed sintered carbides, cast carbide, crushed carbides, tungsten carbide powders and chromium carbide powders.
  • the infiltrant alloy has a composition of copper(53%)-nickel (15%)-manganese(24%)-zinc(8%) and a melting point equal to about 1150 degrees Centigrade.
  • a tough wear-resistant member generally designated as 80 that has a hard composite 82 affixed to a support 84 .
  • Member 80 is a center feed disk for an impeller rock crusher.
  • the support 84 typically is made steel (e.g., 4140 steel) or white iron.
  • the support 84 has a cylindrical base 86 with an inner cylindrical projection 88 .
  • the hard composite 82 presents different wear surfaces 90 and 92 and cylindrical wear surface 93 wherein wear surface 90 is an inner circular surface and wear surface 92 is an outer circular or doughnut-like surface.
  • the hard composite body 82 typically comprises hard constituents that typically comprise cemented carbides, silicon carbides, boron carbide, aluminum oxide, zirconia and other suitable hard materials.
  • the matrix powder typically comprises one or more of crushed tungsten carbide, crushed cemented tungsten carbide, crushed cast tungsten carbide, iron powder, tungsten carbide powder (the tungsten carbide made by a thermit process or from co-carburized tungsten carbide) and/or chromium carbide powder.
  • the infiltrant alloy has a composition of copper(53%)-nickel(15%)-manganese(24%)-zinc(8%) and a melting point equal to about 1150 degrees Centigrade.
  • FIG. 8 there is shown a tough wear-resistant member generally designated as 96 .
  • Member 96 has a support 98 that presents a roughened surface 100 .
  • Wear-resistant member 96 further includes a hard composite 102 . The interface between the hard composite 102 and the support 98 is roughened as shown by FIG. 8.
  • Wear-resistant member 106 comprises a support 108 that contains a hole or bore 110 that passes all the way through the thickness of the support 108 .
  • Support 108 further contains a closed-end bore 112 of one depth and another closed-end bore of another depth 114 . Bore 112 has a greater depth then does bore 114 .
  • Wear-resistant member 106 also includes a hard composite 116 .
  • Hard composite 106 extends into the volumes of the bores ( 110 , 112 , 114 ) as is shown in the cross-sectional view of FIG. 9.
  • the interface between the hard composite and the support is generally planar, except for the presence of the openings to the bores.
  • Matrixtures Nos. 1 through 20 are set forth in Tables 2 through 6 hereinafter. TABLE 2 Components of the Matrix Powder Mixtures Nos. 1 through 4 (Weight Percent) Constituent Mixture Mixture Mixture Mixture Mixture (particle size) No. 1 No. 2 No. 3 No. 4 Crushed tungsten 67 wt. % 67 wt. % 0 wt. % 0 wt. % carbide ( ⁇ 80 +325 mesh) Crushed tungsten 0 wt. % 15.5 wt. % 0 wt. % 0 wt. % carbide ( ⁇ 325 mesh) Crushed cast 31 wt.
  • % tungsten carbide ( ⁇ 325 mesh) 4600 steel ( ⁇ 325 .95 wt. % 0 wt. % 0 wt. % 0 wt. % mesh) Carbonyl iron .95 wt. % 0 wt. % 0 wt. % 0 wt. % ( ⁇ 325 mesh) Nickel ( ⁇ 325 0 wt. % 1.9 wt. % 0 wt. % 0 wt. % mesh) Crushed cobalt 0 wt. % 0 wt. % 95 wt. % (10 wt.
  • cemented tungsten carbide ( ⁇ 140 +325 mesh) Crushed nickel 0 wt. % 0 wt. % 95 wt. % (10 wt. Percent) cemented tungsten carbide ( ⁇ 140 +325 mesh) Chromium 5 wt. % 5 wt. % 5 wt. % 5 wt. % carbide ( ⁇ 45 mesh)
  • cemented tungsten carbide ( ⁇ 140 +325 mesh) Crushed nickel 0 wt. % 0 wt. % 0 wt. % 80 wt. % (10 wt. Percent) cemented tungsten carbide ( ⁇ 140 +325 mesh) Nickel Coated 20 wt. % 20 wt. % 20 wt. % 20 wt. % Tungsten Carbide Powder ( ⁇ 325 mesh)
  • % tungsten carbide ( ⁇ 325 mesh) 4600 steel ( ⁇ 325 .9 wt. % 0 wt. % 0 wt. % 0 wt. % mesh) Carbonyl iron ( ⁇ 325 .9 wt. % 0 wt. % 0 wt. % 0 wt. % mesh) Nickel ( ⁇ 325 0 wt. % 1.8 wt. % 0 wt. % 0 wt. % mesh) Crushed cobalt 0 wt. % 0 wt. % 90 wt. % (10 wt.
  • cemented tungsten carbide ( ⁇ 140 +325 mesh) Crushed nickel 0 wt. % 0 wt. % 0 wt. % 90 wt. % (10 wt. Percent) cemented tungsten carbide ( ⁇ 140 +325 mesh) Crushed nickel 10 wt. % 10 wt. % 10 wt. % 15 wt %) cemented chromium carbide(Ni- Cr 3 C 2 ) ( ⁇ 140 +325 mesh)
  • % tungsten carbide ( ⁇ 325 mesh) 4600 steel ( ⁇ 325 .85 wt. % 0 wt. % 0 wt. % 0 wt. % mesh) Carbonyl iron .85 wt. % 0 wt. % 0 wt. % 0 wt. % ( ⁇ 325 mesh) Nickel ( ⁇ 325 0 wt. % 1.7 wt. % 0 wt. % 0 wt. % mesh) Crushed cobalt 0 wt. % 0 wt. % 85 wt. % (10 wt.
  • cemented tungsten carbide ( ⁇ 140 +325 mesh) Crushed nickel 0 wt. % 0 wt. % 85 wt. % (10 wt. Percent) cemented tungsten carbide ( ⁇ 140 +325 mesh) Nickel-coated 15 wt. % 15 wt. % 15 wt. % 15 wt. % tungsten carbide ( ⁇ 325 mesh)
  • a tough wear-resistant member was made wherein there was a support and a hard composite.
  • the hard composite comprised hard constituents that comprised sintered cobalt (10 weight percent cobalt) cemented tungsten carbide compacts and the matrix powder comprised Mixture No. 1 in Table 1 and the infiltrant alloy comprised (in weight percent) a Cu(53%)-Ni(15%)-Zn(8%)-Mn(24%) alloy described above.
  • the matrix powder comprised 40 weight percent and the infiltrant alloy comprised 60 weight percent of the combination of the matrix powder and the infiltrant alloy.
  • the cemented tungsten carbide compacts were present in a specified amount between about 1 weight percent and about 95 weight percent with the balance of the hard composite comprising the matrix powder and the infiltrant alloy. In the alternative and depending upon the specific application, the cemented tungsten carbide compacts were present in a specified amount between about 1 weight percent and about 90 percent of the surface area of the hard composite.
  • the hard composite comprised hard constituents.
  • the hard constituent comprised a sintered cobalt (6 weight percent cobalt) cemented tungsten carbide compact.
  • the matrix powder comprised Mixture No. 2.
  • the infiltrant alloy comprised in weight percent) a Cu(53%)-Ni(15%)-Zn(8%)-Mn(24%).
  • the matrix powder comprised 45 weight percent and the infiltrant alloy comprised 55 weight percent of the combination of the matrix powder and the infiltrant alloy.
  • the cemented tungsten carbide compacts were present in a specified amount between about 1 weight percent and about 95 weight percent with the balance of the hard composite comprising the matrix powder and the infiltrant alloy. In the alternative and depending upon the specific application, the cemented tungsten carbide compacts were present in a specified amount between about 1 weight percent and about 90 percent of the surface area of the hard composite.
  • Still another tough wear-resistant member was made wherein there was a support and a hard composite.
  • the hard composite comprised hard constituents wherein the hard constituent comprised sintered cobalt (6 weight percent cobalt) cemented tungsten carbide cylindrical compacts.
  • the matrix powder was Mixture No. 3 as set forth in Table 1.
  • the infiltrant alloy comprised (in weight percent) a Cu(53%)-Ni(15%)-Zn(8%)-Mn(24%).
  • the matrix powder comprised 40 weight percent and the infiltrant alloy comprised 60 weight percent of the combination of the matrix powder and the infiltrant alloy.
  • the cemented tungsten carbide compacts were present in a specified amount between about 1 weight percent and about 95 weight percent with the balance of the hard composite comprising the matrix powder and the infiltrant alloy. In the alternative and depending upon the specific application, the cemented tungsten carbide compacts were present in a specified amount between about 1 weight percent and about 90 percent of the surface area of the hard composite.
  • the hard composite comprised hard constituents comprised of nickel-coated sintered cobalt (10 weight percent cobalt) cemented tungsten carbide compacts.
  • the matrix powder comprised Mixture No. 4 from Table 1.
  • the infiltrant alloy comprised (in weight percent) a Cu(53%)-Ni(15%)-Zn (8%)-Mn(24%).
  • the matrix powder comprised 45 weight percent and the infiltrant alloy comprised 55 weight percent of the combination of the matrix powder and the infiltrant alloy.
  • the cemented tungsten carbide compacts were present in a specified amount between about 1 weight percent and about 95 weight percent with the balance of the hard composite comprising the matrix powder and the infiltrant alloy. In the alternative and depending upon the specific application, the cemented tungsten carbide compacts were present in a specified amount between about 1 weight percent and about 90 percent of the surface area of the hard composite.

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Application Number Priority Date Filing Date Title
US10/444,734 US20040234820A1 (en) 2003-05-23 2003-05-23 Wear-resistant member having a hard composite comprising hard constituents held in an infiltrant matrix
US10/455,492 US6984454B2 (en) 2003-05-23 2003-06-04 Wear-resistant member having a hard composite comprising hard constituents held in an infiltrant matrix
EP04809399A EP1631531B1 (de) 2003-05-23 2004-05-17 Verschleissfestes element mit hartem verbundwerkstoff mit in einer infiltrationslegierung gehaltenen harten bestandteilen
KR1020057022377A KR20060105430A (ko) 2003-05-23 2004-05-17 침윤물 매트릭스에 있는 경질 조성을 포함하는 경질합성물을 가진 내마모성 부재
PL379042A PL379042A1 (pl) 2003-05-23 2004-05-17 Człon wytrzymały na zużycie zawierający twardy kompozyt z twardymi składnikami utrzymywanymi w szkielecie infiltrantu
AT04809399T ATE493371T1 (de) 2003-05-23 2004-05-17 Verschleissfestes element mit hartem verbundwerkstoff mit in einer infiltrationslegierung gehaltenen harten bestandteilen
BRPI0410582-6A BRPI0410582A (pt) 2003-05-23 2004-05-17 elemento duro resistente ao desgaste tenaz
DE602004030783T DE602004030783D1 (de) 2003-05-23 2004-05-17 Verschleissfestes element mit hartem verbundwerkstoff mit in einer infiltrationslegierung gehaltenen harten bestandteilen
AU2004276221A AU2004276221B2 (en) 2003-05-23 2004-05-17 A wear-resistant member having a hard composite comprising hard constituents held in an infiltrant matrix
PCT/US2004/016042 WO2005030667A2 (en) 2003-05-23 2004-05-17 A wear-resistant member having a hard composite comprising hard constituents held in an infiltrant matrix
JP2006514922A JP2006526077A (ja) 2003-05-23 2004-05-17 溶浸マトリックスに保持される硬質成分を含む硬質複合材料を有する耐磨耗部材
EP09012865A EP2145866A1 (de) 2003-05-23 2004-05-17 Verschleissfestes element mit hartem verbundwerkstoff mit in einer infiltrationslegierung gehaltenen harten bestandteilen
CNA2004800167521A CN1805845A (zh) 2003-05-23 2004-05-17 具有包含保持在渗剂基体中的硬质组分的硬复合物的耐磨部件

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CN1805845A (zh) 2006-07-19
DE602004030783D1 (de) 2011-02-10
ATE493371T1 (de) 2011-01-15
US20040234821A1 (en) 2004-11-25
EP2145866A1 (de) 2010-01-20

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