JPS5245515A - Production process of tungsten - Google Patents
Production process of tungstenInfo
- Publication number
- JPS5245515A JPS5245515A JP50121275A JP12127575A JPS5245515A JP S5245515 A JPS5245515 A JP S5245515A JP 50121275 A JP50121275 A JP 50121275A JP 12127575 A JP12127575 A JP 12127575A JP S5245515 A JPS5245515 A JP S5245515A
- 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 |
---|---|---|---|
JP50121275A JPS5245515A (en) | 1975-10-09 | 1975-10-09 | Production process of tungsten |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50121275A JPS5245515A (en) | 1975-10-09 | 1975-10-09 | Production process of tungsten |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5245515A true JPS5245515A (en) | 1977-04-11 |
JPS5611722B2 JPS5611722B2 (en) | 1981-03-17 |
Family
ID=14807211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50121275A Granted JPS5245515A (en) | 1975-10-09 | 1975-10-09 | Production process of tungsten |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5245515A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54150155A (en) * | 1978-05-17 | 1979-11-26 | Samutaku Kk | Position detector |
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 |
-
1975
- 1975-10-09 JP JP50121275A patent/JPS5245515A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54150155A (en) * | 1978-05-17 | 1979-11-26 | Samutaku Kk | Position detector |
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 |
---|---|
JPS5611722B2 (en) | 1981-03-17 |
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