GB1503784A - Cemented carbonitride alloys - Google Patents

Cemented carbonitride alloys

Info

Publication number
GB1503784A
GB1503784A GB4248075A GB4248075A GB1503784A GB 1503784 A GB1503784 A GB 1503784A GB 4248075 A GB4248075 A GB 4248075A GB 4248075 A GB4248075 A GB 4248075A GB 1503784 A GB1503784 A GB 1503784A
Authority
GB
United Kingdom
Prior art keywords
phase
carbonitride
hard
alloy
phases
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
GB4248075A
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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
Priority claimed from JP12073874A external-priority patent/JPS51125613A/en
Priority claimed from JP49120735A external-priority patent/JPS5146509A/en
Priority claimed from JP49120737A external-priority patent/JPS5146511A/ja
Priority claimed from JP49120734A external-priority patent/JPS5749103B2/ja
Priority claimed from JP49120736A external-priority patent/JPS5146510A/en
Priority claimed from JP50024357A external-priority patent/JPS5198613A/ja
Priority claimed from JP50024587A external-priority patent/JPS5198611A/ja
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of GB1503784A publication Critical patent/GB1503784A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

1503784 Cemented carbonitride alloy SUMITOMO ELECTRIC INDUSTRIES Ltd 16 Oct 1975 [18 Oct 1974 (5) 26 Feb 1975 27 Feb 1975] 42480/75 Headings C7A and C7D A cemented carbonitride alloy in which there are two hard phases, the gross composition of which is [(Ti,Zr,Hf) A (V,Nb,Ta) B (Cr, Mo,W) C ] (CxNy) y (1) wherein A, B, C, X and Y are respectively male fractions, Z is a male ratio of the metalloid components to the metal components and there are among A, B, C, X, Y and Z the relations:- A+B+C=1, X+Y=1 4A + 5B + 6C + 4 X Z + 5 Y Z # 8À6 (2) 0À05 # Y # 0À5 and 0À85 # Z # 1. the hard phases being present in a matrix of at least one binder metal selected from iron, cobalt and nickel, not containing, or containing minor amounts of the hard phase components, the binder metal being present in an amount of 0À01 to 0À5 multiplied by the weight of the hard phases, the hard phases being a WC phase and a hard phase which has the B1 crystal structure and contains Ti in a proportion of at least 20 atomic per cent of the metallic atoms. The alloy may be prepared by forming the carbonitride of composition described in Formula (1) admixing with the binder material and sintering under a nitrogen partial pressure of 10<SP>-4</SP> to 200 torr and cooling to the solidus temperature of the binder metal either at a speed of at least 20‹C/min or by maintaining the absolute pressure during cooling at a higher level than during sintering whereupon the carbonitride of Formula (1) decomposes into the hard phases WC phase and B1 crystal structure phase. A WC phase free layer may be provided on the surface of the alloy by re-heating the compound during or after sintering to reduce the nitrogen content of the surface layer e.g. by heating in vacuo or in a carburizing atmosphere to reduce the valency electron concentration in the surface to below 8À6 (Formula 2) whereupon the carbonitride in the surface remains stable and does not decompose to WC and Bl phases and provides a WC free surface layer.
GB4248075A 1974-10-18 1975-10-16 Cemented carbonitride alloys Expired GB1503784A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP12073874A JPS51125613A (en) 1974-10-18 1974-10-18 A hard alloy
JP49120735A JPS5146509A (en) 1974-10-18 1974-10-18 Niobu ofukumu chokoshitsugokin
JP49120737A JPS5146511A (en) 1974-10-18 1974-10-18
JP49120734A JPS5749103B2 (en) 1974-10-18 1974-10-18
JP49120736A JPS5146510A (en) 1974-10-18 1974-10-18 Banajiumu ofukumu chokoshitsugokin
JP50024357A JPS5198613A (en) 1975-02-26 1975-02-26
JP50024587A JPS5198611A (en) 1975-02-27 1975-02-27

Publications (1)

Publication Number Publication Date
GB1503784A true GB1503784A (en) 1978-03-15

Family

ID=27564027

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4248075A Expired GB1503784A (en) 1974-10-18 1975-10-16 Cemented carbonitride alloys

Country Status (4)

Country Link
AU (1) AU501073B2 (en)
DE (2) DE2546623A1 (en)
FR (1) FR2288155A1 (en)
GB (1) GB1503784A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4000937A1 (en) * 1989-01-13 1990-07-19 Ngk Spark Plug Co CERMET FOR TOOLS
US20200048747A1 (en) * 2017-04-19 2020-02-13 Sumitomo Electric Industries, Ltd. Cemented Carbide, Cutting Tool Containing the Same, and Method of Manufacturing Cemented Carbide

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2403395B1 (en) * 1977-09-20 1986-02-28 Sumitomo Electric Industries PROCESS FOR PRODUCING HARD ALLOYS AND NOVEL PRODUCTS THUS OBTAINED
CA1115994A (en) * 1977-12-29 1982-01-12 Sumitomo Electric Industries, Ltd. Hard alloy containing molybdenum and tungsten
JPS59129751A (en) * 1983-01-13 1984-07-26 Mitsubishi Metal Corp Superheat-resistant sintered alloy and its production
DE3806602A1 (en) * 1988-03-02 1988-07-07 Krupp Gmbh CARBIDE BODY
SE9004119D0 (en) * 1990-12-21 1990-12-21 Sandvik Ab PREPARED FOR PREPARATION OF A SINTERED CARBON NITROGEN ALLOY FOR INTERMITTENT PROCESSING OF REPLACED MATERIALS
SE469385B (en) * 1990-12-21 1993-06-28 Sandvik Ab MADE TO MAKE A SINTERED CARBON Nitride Alloy BEFORE FINISHING
SE9004118D0 (en) * 1990-12-21 1990-12-21 Sandvik Ab PREPARED FOR PREPARATION OF A SINTERED CARBON NITROGEN ALLOY BEFORE FINALLY FOR MEDIUM COAT
SE469386B (en) * 1990-12-21 1993-06-28 Sandvik Ab MADE TO MAKE A SINTERED CARBON NITROGEN ALLOY FOR CUTTING PROCESSING
SE469384B (en) * 1990-12-21 1993-06-28 Sandvik Ab MADE TO MAKE A SINTERED CARBON NITROGEN ALLOY BEFORE MILLING

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2123046A (en) * 1935-12-02 1938-07-05 Gen Electric Sintered hard metal alloys
DE2137873C3 (en) * 1970-11-03 1979-04-12 Teledyne Industries, Inc., Los Angeles, Calif. (V.St.A.) Cemented carbide cast alloy and process for their manufacture
BE794383A (en) * 1972-02-14 1973-07-23 Teledyne Ind CARBIDE ALLOYS FOR CUTTING TOOLS
FR2183549A1 (en) * 1972-05-10 1973-12-21 Ugine Carbone Sintered metalcarbonitride material - for watch cases
DE2420768A1 (en) * 1973-06-18 1975-01-09 Teledyne Ind CARBONITRIDE ALLOYS FOR CUTTING TOOLS AND WEAR PARTS
GB1478533A (en) * 1973-06-18 1977-07-06 Teledyne Ind Carbonitride-binder metal alloys
US3971656A (en) * 1973-06-18 1976-07-27 Erwin Rudy Spinodal carbonitride alloys for tool and wear applications

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4000937A1 (en) * 1989-01-13 1990-07-19 Ngk Spark Plug Co CERMET FOR TOOLS
GB2227497A (en) * 1989-01-13 1990-08-01 Ngk Spark Plug Co Cermet for tool
US5051126A (en) * 1989-01-13 1991-09-24 Ngk Spark Plug Co., Ltd. Cermet for tool
GB2227497B (en) * 1989-01-13 1993-08-11 Ngk Spark Plug Co Cermet for tool
US20200048747A1 (en) * 2017-04-19 2020-02-13 Sumitomo Electric Industries, Ltd. Cemented Carbide, Cutting Tool Containing the Same, and Method of Manufacturing Cemented Carbide
US10961609B2 (en) * 2017-04-19 2021-03-30 Sumitomo Electric Industries, Ltd. Cemented carbide, cutting tool containing the same, and method of manufacturing cemented carbide

Also Published As

Publication number Publication date
DE2546623C2 (en) 1989-07-13
AU501073B2 (en) 1979-06-07
FR2288155A1 (en) 1976-05-14
DE2560567C2 (en) 1989-08-03
DE2546623A1 (en) 1976-04-29
FR2288155B1 (en) 1981-05-08
AU8575875A (en) 1977-04-21

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19951015