JPS54107818A - Working method for niobium ingot - Google Patents

Working method for niobium ingot

Info

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
Application number
JP1524378A
Other languages
Japanese (ja)
Other versions
JPS6039743B2 (en
Inventor
Itaru Inoue
Takuya Suzuki
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa 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 Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP1524378A priority Critical patent/JPS6039743B2/en
Publication of JPS54107818A publication Critical patent/JPS54107818A/en
Publication of JPS6039743B2 publication Critical patent/JPS6039743B2/en
Expired legal-status Critical Current

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
JP1524378A 1978-02-13 1978-02-13 Processing method of niobium ingot Expired JPS6039743B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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