GB1386667A - Sintering hard metal alloys - Google Patents

Sintering hard metal alloys

Info

Publication number
GB1386667A
GB1386667A GB2712172A GB2712172A GB1386667A GB 1386667 A GB1386667 A GB 1386667A GB 2712172 A GB2712172 A GB 2712172A GB 2712172 A GB2712172 A GB 2712172A GB 1386667 A GB1386667 A GB 1386667A
Authority
GB
United Kingdom
Prior art keywords
torr
furnace
inlet
pressure
sintering
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
GB2712172A
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.)
Wickman Wimet Ltd
Original Assignee
Wickman Wimet 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 Wickman Wimet Ltd filed Critical Wickman Wimet Ltd
Priority to GB2712172A priority Critical patent/GB1386667A/en
Priority to ZA733237A priority patent/ZA733237B/en
Priority to FR7318938A priority patent/FR2187474B1/fr
Priority to IT50518/73A priority patent/IT985346B/en
Priority to DE2329261A priority patent/DE2329261B2/en
Priority to JP48064393A priority patent/JPS4962304A/ja
Publication of GB1386667A publication Critical patent/GB1386667A/en
Expired 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
    • B22F3/1003—Use of special medium during sintering, e.g. sintering aid
    • B22F3/1007—Atmosphere
    • B22F3/101—Changing atmosphere
    • 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
    • B22F2201/01—Reducing atmosphere
    • 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

Landscapes

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

Abstract

1386667 Sintering furnace WICKMAN WIMET Ltd 22 May 1973 [9 June 1972] 27121/72 Heading F4B [Also in Division C7] Cemented carbides are sintered under a pulsating non-oxidizing or reducing gas, e.g. H 2 ŒN 2 or inert gas optionally with methane in a furnace comprising a carbon susceptor 4, insulating material 5, silica sleeve 6 and induction coil 7. The furnace is connected to gas inlet 9, vacuum connection 12 and pressure sensors 13, 14 are connected to valves in inlet 9 and connection 12. The compacts are stacked on trays 15 and after evacuating, H 2 is introduced via 9, to a pressure of 700 torr. and the compacts are heated. At 700 torr. the valve in inlet 9 is automatically closed and the vacuum line 12 is opened to reduce the pressure to 100 torr. The cycling is continued for 12 cycles while heating up to 900‹ C. The H 2 is then evacuated and normal vacuum sintering is then effected.
GB2712172A 1972-06-09 1972-06-09 Sintering hard metal alloys Expired GB1386667A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB2712172A GB1386667A (en) 1972-06-09 1972-06-09 Sintering hard metal alloys
ZA733237A ZA733237B (en) 1972-06-09 1973-05-14 Improvements in sintering hard metal alloys
FR7318938A FR2187474B1 (en) 1972-06-09 1973-05-24
IT50518/73A IT985346B (en) 1972-06-09 1973-06-07 METAL ALLOY SINTERING METHOD AND OVEN TO MAKE IT
DE2329261A DE2329261B2 (en) 1972-06-09 1973-06-08 Method and device for sintering carbonaceous metal and alloy powders
JP48064393A JPS4962304A (en) 1972-06-09 1973-06-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2712172A GB1386667A (en) 1972-06-09 1972-06-09 Sintering hard metal alloys

Publications (1)

Publication Number Publication Date
GB1386667A true GB1386667A (en) 1975-03-12

Family

ID=10254555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2712172A Expired GB1386667A (en) 1972-06-09 1972-06-09 Sintering hard metal alloys

Country Status (6)

Country Link
JP (1) JPS4962304A (en)
DE (1) DE2329261B2 (en)
FR (1) FR2187474B1 (en)
GB (1) GB1386667A (en)
IT (1) IT985346B (en)
ZA (1) ZA733237B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2831293A1 (en) * 1977-07-17 1979-02-01 Sumitomo Electric Industries METHOD FOR PRODUCING SINTERED HARD METALS AND DEVICE FOR CARRYING OUT THIS METHOD
CN117848047A (en) * 2024-03-07 2024-04-09 山西科福能源科技有限公司 Pressure roasting furnace for graphite preparation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4213495A (en) * 1978-08-31 1980-07-22 Ceram-Dent, Inc. Investment casting method
FR2464274B1 (en) * 1979-09-04 1985-06-21 Ugine Kuhlmann UNSATURATED POLYESTER RESIN FOR PREPREGENT HAVING ACCELERATED CURING SPEED; PROCESS FOR THE MANUFACTURE OF THIS RESIN
JPS60105627U (en) * 1983-12-23 1985-07-18 株式会社島津製作所 sintering furnace

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109735A (en) * 1961-10-30 1963-11-05 John M Googin Sintering method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2831293A1 (en) * 1977-07-17 1979-02-01 Sumitomo Electric Industries METHOD FOR PRODUCING SINTERED HARD METALS AND DEVICE FOR CARRYING OUT THIS METHOD
CN117848047A (en) * 2024-03-07 2024-04-09 山西科福能源科技有限公司 Pressure roasting furnace for graphite preparation
CN117848047B (en) * 2024-03-07 2024-05-07 山西科福能源科技有限公司 Pressure roasting furnace for graphite preparation

Also Published As

Publication number Publication date
IT985346B (en) 1974-11-30
DE2329261B2 (en) 1974-10-03
DE2329261A1 (en) 1974-01-03
FR2187474B1 (en) 1977-04-29
FR2187474A1 (en) 1974-01-18
JPS4962304A (en) 1974-06-17
ZA733237B (en) 1974-06-26

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Legal Events

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PS Patent sealed
EER Erroneous entry in the register of patents:

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EER Erroneous entry in the register of patents:

Free format text: DOCUMENT WAS IDENTIFIED AS HAVING CEASED WHILE IN FACT IT WAS STILL IN FORCE

EER Erroneous entry in the register of patents:

Free format text: DOCUMENT WAS IDENTIFIED AS HAVING CEASED WHILE IN FACT IT WAS STILL IN FORCE

EER Erroneous entry in the register of patents:

Free format text: DOCUEMTN WAS IDENTIFIED AS HAVING CEASED WHILE IN FACT IT WAS STILL IN FORCE

PE20 Patent expired after termination of 20 years

Effective date: 19930521