GB763409A - Hard metal alloy and method for producing the same - Google Patents

Hard metal alloy and method for producing the same

Info

Publication number
GB763409A
GB763409A GB30264/54A GB3026454A GB763409A GB 763409 A GB763409 A GB 763409A GB 30264/54 A GB30264/54 A GB 30264/54A GB 3026454 A GB3026454 A GB 3026454A GB 763409 A GB763409 A GB 763409A
Authority
GB
United Kingdom
Prior art keywords
per cent
carbide
mixture
per
tantalum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB30264/54A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Uddeholms AB
Original Assignee
Uddeholms AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uddeholms AB filed Critical Uddeholms AB
Publication of GB763409A publication Critical patent/GB763409A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/04—Alloys 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 carbonitrides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Abstract

A hard metal alloy, particularly for tools, is produced by sintering a mixture of 78-80 per cent tungsten carbide (WC), 2-4 per cent tantalum carbide (TaC), 3-5 per cent titanium carbide (TiC), 12-15 per cent cobalt and 0-3 per cent of one or more carbides of metals of Groups 4a, 5a and 6a (excluding tungsten, tantalum and titanium) and/or one or more nitrates, borides or silicides of metals of Groups 4a, 5a and 6a under such decarbonizing conditions that total percentage of carbon is reduced to 0.2-0.5 per cent less than stoichiometric amount and the per centage of free carbon is less than 0.1 per cent. The decarbonizing conditions may be obtained by packing the mixture in powdered aluminium or zirconium oxide and graphite or by sintering in vacuum. In an example, 79 per cent tungsten carbide, 3 per cent tantalum carbide, 4 per cent titanium carbide and 14 per cent Co were mixed after first heating the carbides together at 1700 DEG C. The resultant mixture was then packed in a powder of 85 per cent aluminium oxide and 15 per cent graphite and sintered at 1400 DEG C. The total carbon content of the resultant compact was 5.5-5.65 per cent and the free carbon content was 0.05 per cent.
GB30264/54A 1953-10-21 1954-10-20 Hard metal alloy and method for producing the same Expired GB763409A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE763409X 1953-10-21

Publications (1)

Publication Number Publication Date
GB763409A true GB763409A (en) 1956-12-12

Family

ID=20329929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30264/54A Expired GB763409A (en) 1953-10-21 1954-10-20 Hard metal alloy and method for producing the same

Country Status (1)

Country Link
GB (1) GB763409A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245763A (en) * 1963-07-01 1966-04-12 Sandvikens Jernverks Ab Sintered hard metal alloy for machining cast iron and steel
US3503692A (en) * 1964-11-21 1970-03-31 Sumitomo Electric Industries Ballpoint pen
JPS55154562A (en) * 1979-05-18 1980-12-02 Sumitomo Electric Ind Ltd Sintered hard alloy part for base material of surface-covered tool material and their manufacture
DE3211047A1 (en) * 1981-03-27 1982-11-25 Kennametal Inc., 15650 Latrobe, Pa. PREFERRED BONDED, CEMENTED CARBIDE BODY AND METHOD FOR THE PRODUCTION THEREOF
USRE34180E (en) * 1981-03-27 1993-02-16 Kennametal Inc. Preferentially binder enriched cemented carbide bodies and method of manufacture

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245763A (en) * 1963-07-01 1966-04-12 Sandvikens Jernverks Ab Sintered hard metal alloy for machining cast iron and steel
US3503692A (en) * 1964-11-21 1970-03-31 Sumitomo Electric Industries Ballpoint pen
JPS55154562A (en) * 1979-05-18 1980-12-02 Sumitomo Electric Ind Ltd Sintered hard alloy part for base material of surface-covered tool material and their manufacture
JPS6119708B2 (en) * 1979-05-18 1986-05-19 Sumitomo Electric Industries
DE3211047A1 (en) * 1981-03-27 1982-11-25 Kennametal Inc., 15650 Latrobe, Pa. PREFERRED BONDED, CEMENTED CARBIDE BODY AND METHOD FOR THE PRODUCTION THEREOF
USRE34180E (en) * 1981-03-27 1993-02-16 Kennametal Inc. Preferentially binder enriched cemented carbide bodies and method of manufacture

Similar Documents

Publication Publication Date Title
ES394219A1 (en) High alloy steel powders and their consolidation into homogeneous tool steel
GB763409A (en) Hard metal alloy and method for producing the same
ES391619A1 (en) Ferrous alloys
GB1079352A (en) Improvements in or relating to machine-tools and tool supports
GB1123015A (en) A process for producing sintered anodes
US2798808A (en) Method of introducing zirconia into tungsten powder preliminary to forming electrodes
GB941947A (en) An improved metal composition and a method of manufacture thereof
GB1036635A (en) Beryllium copper based alloys and method of producing green compacts and sintered articles therefrom
GB1295413A (en)
GB950630A (en) Improvements in the production of metallic bodies
GB1321947A (en) Process for producing a cemented tungsten carbide composition
GB1026903A (en) Improvements in or relating to refractory materials
GB919884A (en) Sintered silicon carbide compositions and method for their preparation
GB985174A (en) Preparation of cermets
US2289104A (en) Method for the production of hardmetal alloys
US2207708A (en) Hard metal alloy process
Samsonov et al. Sintered titanium carbide hard alloys
US2509838A (en) Manufacture of tungsten and molybdenum carbides and sintered alloys
GB617212A (en) Improvements in and relating to hard metal alloys
GB950916A (en) Method of manufacturing a sintered tungsten member
FR2152141A5 (en) Tungsten carbide prodn - and mfr of mixed metal carbides from oxides
GB908412A (en) Improvements in methods of producing heat treatable ferrous alloys and to such alloys
GB1231084A (en)
GB1419278A (en) Process for preparing cemented tungsten carbide
GB635221A (en) Process for producing carbides of tungsten and/or of molybdenum and their sintered alloys