JPS5245517A - Production process of tungsten - Google Patents

Production process of tungsten

Info

Publication number
JPS5245517A
JPS5245517A JP50121277A JP12127775A JPS5245517A JP S5245517 A JPS5245517 A JP S5245517A JP 50121277 A JP50121277 A JP 50121277A JP 12127775 A JP12127775 A JP 12127775A JP S5245517 A JPS5245517 A JP S5245517A
Authority
JP
Japan
Prior art keywords
tungsten
production process
production
bulbs
filaments
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
JP50121277A
Other languages
Japanese (ja)
Other versions
JPS5612281B2 (en
Inventor
Isamu Koseki
Seiki Sato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP50121277A priority Critical patent/JPS5245517A/en
Publication of JPS5245517A publication Critical patent/JPS5245517A/en
Publication of JPS5612281B2 publication Critical patent/JPS5612281B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE: Obtaining tungsten of little deformation at a high temperature, by washing with hydrofluoric acid after having been reduced with the addition of a doping agent, at the production of tungsten to be used for filaments of tubes and bulbs of several kinds, heaters for vacuum evaporation, etc.
COPYRIGHT: (C)1977,JPO&Japio
JP50121277A 1975-10-09 1975-10-09 Production process of tungsten Granted JPS5245517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50121277A JPS5245517A (en) 1975-10-09 1975-10-09 Production process of tungsten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50121277A JPS5245517A (en) 1975-10-09 1975-10-09 Production process of tungsten

Publications (2)

Publication Number Publication Date
JPS5245517A true JPS5245517A (en) 1977-04-11
JPS5612281B2 JPS5612281B2 (en) 1981-03-19

Family

ID=14807260

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50121277A Granted JPS5245517A (en) 1975-10-09 1975-10-09 Production process of tungsten

Country Status (1)

Country Link
JP (1) JPS5245517A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723007A (en) * 1980-07-15 1982-02-06 Toshiba Corp Manufacture of powdered w-re mixture
JPS6169907A (en) * 1984-09-14 1986-04-10 Nippon Tungsten Co Ltd Production of pulverous tungsten powder
JPS63179007A (en) * 1987-01-20 1988-07-23 Daido Steel Co Ltd Method for purifying tungsten or tungsten compound powder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0325260Y2 (en) * 1984-11-27 1991-05-31

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723007A (en) * 1980-07-15 1982-02-06 Toshiba Corp Manufacture of powdered w-re mixture
JPS5915961B2 (en) * 1980-07-15 1984-04-12 株式会社東芝 Method for producing tungsten-rhenium powder mixture
JPS6169907A (en) * 1984-09-14 1986-04-10 Nippon Tungsten Co Ltd Production of pulverous tungsten powder
JPH0239562B2 (en) * 1984-09-14 1990-09-06 Nippon Tungsten
JPS63179007A (en) * 1987-01-20 1988-07-23 Daido Steel Co Ltd Method for purifying tungsten or tungsten compound powder

Also Published As

Publication number Publication date
JPS5612281B2 (en) 1981-03-19

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