JPS54107818A - Working method for niobium ingot - Google Patents
Working method for niobium ingotInfo
- Publication number
- JPS54107818A JPS54107818A JP1524378A JP1524378A JPS54107818A JP S54107818 A JPS54107818 A JP S54107818A JP 1524378 A JP1524378 A JP 1524378A JP 1524378 A JP1524378 A JP 1524378A JP S54107818 A JPS54107818 A JP S54107818A
- Authority
- JP
- Japan
- Prior art keywords
- ingot
- container
- cast structure
- niobium
- destroy
- 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
Abstract
PURPOSE: To facilitate cold working of a niobium ingot by heating the ingot to 600W1300°C in an atmosphere of inert gas or vacuum and compression working it to destroy the cast structure of the niobium.
CONSTITUTION: Nb ingot 1 is put in 0.5W3 mm thick container 2 made of Fe alloy or the like which does not melt at 600W1300°C and does not react with Nb. Cover 4 provided with gas inflow port 3a and exhaust port 3b is welded to container 2. Air in container 2 is replaced with inert gas such as Ar or He through ports 3a, 3b or container 2 is evacuated. Ports 3a, 3b are then sealed, and ingot 1 is heated to 600W1300°C and compression worked together with container 2 to destroy the cast structure of the Nb. After cooling, container 2 is exfoliated from the surface of ingot 1. Since the cast structure is destroyed, the ingot can be cold worked thereafter in such a high working ratio as 10W20%.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1524378A JPS6039743B2 (en) | 1978-02-13 | 1978-02-13 | Processing method of niobium ingot |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1524378A JPS6039743B2 (en) | 1978-02-13 | 1978-02-13 | Processing method of niobium ingot |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54107818A true JPS54107818A (en) | 1979-08-24 |
JPS6039743B2 JPS6039743B2 (en) | 1985-09-07 |
Family
ID=11883414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1524378A Expired JPS6039743B2 (en) | 1978-02-13 | 1978-02-13 | Processing method of niobium ingot |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6039743B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010165602A (en) * | 2009-01-17 | 2010-07-29 | Daido Steel Co Ltd | Method of manufacturing electrode material for cold cathode discharge tube |
-
1978
- 1978-02-13 JP JP1524378A patent/JPS6039743B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010165602A (en) * | 2009-01-17 | 2010-07-29 | Daido Steel Co Ltd | Method of manufacturing electrode material for cold cathode discharge tube |
Also Published As
Publication number | Publication date |
---|---|
JPS6039743B2 (en) | 1985-09-07 |
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