JPS57123903A - Production of sintered alloy - Google Patents

Production of sintered alloy

Info

Publication number
JPS57123903A
JPS57123903A JP837781A JP837781A JPS57123903A JP S57123903 A JPS57123903 A JP S57123903A JP 837781 A JP837781 A JP 837781A JP 837781 A JP837781 A JP 837781A JP S57123903 A JPS57123903 A JP S57123903A
Authority
JP
Japan
Prior art keywords
moldings
alloys
sintered
production
type
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
JP837781A
Other languages
Japanese (ja)
Other versions
JPS643921B2 (en
Inventor
Takao Kasai
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.)
Citizen Holdings Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
Citizen Watch Co 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 Citizen Holdings Co Ltd, Citizen Watch Co Ltd filed Critical Citizen Holdings Co Ltd
Priority to JP837781A priority Critical patent/JPS57123903A/en
Publication of JPS57123903A publication Critical patent/JPS57123903A/en
Publication of JPS643921B2 publication Critical patent/JPS643921B2/ja
Granted 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
    • B22F3/12—Both compacting and sintering

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

PURPOSE:To improve the dimensional accuracy of sintered parts in liner calcining of moldings of parts consisting of sintered alloys by providing a precalcining stage of returning the moldings to ordinary temp. at the point of the time when shrinkage by calcination is not completed yet, inserting liners and again performing regular firing. CONSTITUTION:In production of sintered parts of alloys such as WC-Co type aoolys, TaC-Ni type alloys, stainless steel type or the like, these alloys are ground to 1.5mu average grain sizes, and are molded under 5t/cm<2> molding pressure with an oil hydraulic press. After the moldings are roasted in a hydrogen atmosphere, they are calcined in a vacuum, whereby presintered bodies 2 are made. Liners 4 are loaded in these bodies 4, and these are subjected to regular sintering in a vacuum to make finished blanks 3, thus the production of the sintered moldings of extremely small dimensional variances is made possible.
JP837781A 1981-01-22 1981-01-22 Production of sintered alloy Granted JPS57123903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP837781A JPS57123903A (en) 1981-01-22 1981-01-22 Production of sintered alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP837781A JPS57123903A (en) 1981-01-22 1981-01-22 Production of sintered alloy

Publications (2)

Publication Number Publication Date
JPS57123903A true JPS57123903A (en) 1982-08-02
JPS643921B2 JPS643921B2 (en) 1989-01-24

Family

ID=11691528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP837781A Granted JPS57123903A (en) 1981-01-22 1981-01-22 Production of sintered alloy

Country Status (1)

Country Link
JP (1) JPS57123903A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5593757A (en) * 1994-06-17 1997-01-14 Canon Kabushiki Kaisha Production process of color filter and color filter produced thereby
CN103820694A (en) * 2014-01-27 2014-05-28 湖南海云冶金材料有限公司 Method for preparing WC (Wolfram Carbide)-TiC (Titanium Carbide) solid solution powder for tungsten-titanium-cobalt hard alloy

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7224874B2 (en) * 2018-11-29 2023-02-20 株式会社ジャパンディスプレイ sensor device
JP2020154671A (en) * 2019-03-20 2020-09-24 株式会社ジャパンディスプレイ Sensor device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50123706A (en) * 1974-03-13 1975-09-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50123706A (en) * 1974-03-13 1975-09-29

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5593757A (en) * 1994-06-17 1997-01-14 Canon Kabushiki Kaisha Production process of color filter and color filter produced thereby
CN103820694A (en) * 2014-01-27 2014-05-28 湖南海云冶金材料有限公司 Method for preparing WC (Wolfram Carbide)-TiC (Titanium Carbide) solid solution powder for tungsten-titanium-cobalt hard alloy

Also Published As

Publication number Publication date
JPS643921B2 (en) 1989-01-24

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