EP0443048A4 - Method of producing cemented carbide or cermet alloy - Google Patents

Method of producing cemented carbide or cermet alloy

Info

Publication number
EP0443048A4
EP0443048A4 EP19900913553 EP90913553A EP0443048A4 EP 0443048 A4 EP0443048 A4 EP 0443048A4 EP 19900913553 EP19900913553 EP 19900913553 EP 90913553 A EP90913553 A EP 90913553A EP 0443048 A4 EP0443048 A4 EP 0443048A4
Authority
EP
European Patent Office
Prior art keywords
mold
cemented carbide
organic binder
atmosphere
removing step
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.)
Granted
Application number
EP19900913553
Other languages
French (fr)
Other versions
EP0443048B1 (en
EP0443048A1 (en
Inventor
Nobuyuki Itami Works Kitagawa
Toshio Itami Works Nomura
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
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of EP0443048A1 publication Critical patent/EP0443048A1/en
Publication of EP0443048A4 publication Critical patent/EP0443048A4/en
Application granted granted Critical
Publication of EP0443048B1 publication Critical patent/EP0443048B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1017—Multiple heating or additional steps
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1017—Multiple heating or additional steps
    • B22F3/1021—Removal of binder or filler
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • 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
    • B22F2201/00—Treatment under specific atmosphere
    • B22F2201/10—Inert gases
    • 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
    • B22F2201/00—Treatment under specific atmosphere
    • B22F2201/20—Use of vacuum
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

A method of producing cemented carbide or cermet alloy comprising mixing and kneading cemented carbide powder or cermet alloy powder with an organic binder, molding this mixed powder into a predetermined shape by injection molding, removing the organic binder from the resulting mold and sintering the mold to obtain a compact alloy. The removal of the organic binder is carried out in a first removing step in an inert gas atmosphere and subsequently in a second removing step in vacuum of 1 Torr or below. In the first removing step, the pressure of the atmosphere is kept at or above the atmospheric pressure so as to prevent the occurrence of defects in the mold. After continuous fine pores are formed inside the mold, the pressure of the atmosphere is kept near vacuum in order to promote the evaporation of the gas from the surface and the release of the gas generated inside the mold.
EP90913553A 1989-09-14 1990-09-12 Method of producing cemented carbide or cermet alloy Expired - Lifetime EP0443048B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP238849/89 1989-09-14
JP23884989 1989-09-14
PCT/JP1990/001171 WO1991004119A1 (en) 1989-09-14 1990-09-12 Method of producing cemented carbide or cermet alloy

Publications (3)

Publication Number Publication Date
EP0443048A1 EP0443048A1 (en) 1991-08-28
EP0443048A4 true EP0443048A4 (en) 1991-10-30
EP0443048B1 EP0443048B1 (en) 1994-12-14

Family

ID=17036179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90913553A Expired - Lifetime EP0443048B1 (en) 1989-09-14 1990-09-12 Method of producing cemented carbide or cermet alloy

Country Status (6)

Country Link
EP (1) EP0443048B1 (en)
KR (1) KR940009337B1 (en)
CA (1) CA2041668C (en)
DE (1) DE69015150T2 (en)
TW (1) TW225493B (en)
WO (1) WO1991004119A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5403373A (en) * 1991-05-31 1995-04-04 Sumitomo Electric Industries, Ltd. Hard sintered component and method of manufacturing such a component
DE19709651A1 (en) * 1996-03-16 1997-10-30 Widia Gmbh Composite material used in production of e.g. cutting plates
SE9603936D0 (en) * 1996-10-25 1996-10-25 Sandvik Ab Method of making cemented carbide by metal injection molding
DE19855422A1 (en) 1998-12-01 2000-06-08 Basf Ag Hard material sintered part with a nickel- and cobalt-free, nitrogen-containing steel as a binder of the hard material phase
SE526194C2 (en) * 2003-08-27 2005-07-26 Seco Tools Ab Method of manufacturing a sintered body
SE529202C2 (en) * 2005-05-17 2007-05-29 Sandvik Intellectual Property Methods of manufacturing an agglomerated powder mixture of a slurry and agglomerated powder
SE533922C2 (en) * 2008-12-18 2011-03-01 Seco Tools Ab Ways to manufacture cemented carbide products
CN104357696B (en) * 2014-12-01 2016-04-27 技锋精密刀具（马鞍山）有限公司 A kind of sintering process of carbide paraffin production technique goods
CN109822089B (en) * 2019-01-18 2022-05-13 株洲金佰利硬质合金有限公司 Forming agent for hard alloy production
CN116023143B (en) * 2021-10-25 2024-02-06 中国科学院上海硅酸盐研究所 Preparation method of silicon carbide ceramic

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4233256A (en) * 1978-12-18 1980-11-11 The Carborundum Company Process for injection molding sinterable carbide ceramic materials
DE3611271A1 (en) * 1986-04-04 1987-10-15 Licentia Gmbh Process for producing metal shaped parts
US4836980A (en) * 1987-01-26 1989-06-06 Chugai Ro Co., Ltd. Method of sintering an injection-molded article

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51126308A (en) * 1975-04-28 1976-11-04 Shinroku Saito Process for producing a super alloy plate
US4305756A (en) * 1980-01-14 1981-12-15 Witec Cayman Patents, Ltd. Method and means for removing binder from a green body
JPH07116487B2 (en) * 1988-06-30 1995-12-13 三菱製鋼株式会社 Method for degreasing metal powder injection molded body
JPH0270004A (en) * 1988-09-02 1990-03-08 Mitsubishi Metal Corp Method for degreasing injection molded body

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4233256A (en) * 1978-12-18 1980-11-11 The Carborundum Company Process for injection molding sinterable carbide ceramic materials
DE3611271A1 (en) * 1986-04-04 1987-10-15 Licentia Gmbh Process for producing metal shaped parts
US4836980A (en) * 1987-01-26 1989-06-06 Chugai Ro Co., Ltd. Method of sintering an injection-molded article

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9104119A1 *

Also Published As

Publication number Publication date
JPH03177506A (en) 1991-08-01
CA2041668C (en) 1999-08-03
DE69015150T2 (en) 1995-05-04
EP0443048B1 (en) 1994-12-14
EP0443048A1 (en) 1991-08-28
KR920700819A (en) 1992-08-10
DE69015150D1 (en) 1995-01-26
TW225493B (en) 1994-06-21
CA2041668A1 (en) 1991-03-15
WO1991004119A1 (en) 1991-04-04
KR940009337B1 (en) 1994-10-07

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