JPS5245517A - Production process of tungsten - Google Patents
Production process of tungstenInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0325260Y2 (en) * | 1984-11-27 | 1991-05-31 |
-
1975
- 1975-10-09 JP JP50121277A patent/JPS5245517A/en active Granted
Cited By (5)
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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