JPS56122662A - Preventing method of casting crack of antiferromagnetic chromium invar alloy ingot - Google Patents
Preventing method of casting crack of antiferromagnetic chromium invar alloy ingotInfo
- Publication number
- JPS56122662A JPS56122662A JP2715380A JP2715380A JPS56122662A JP S56122662 A JPS56122662 A JP S56122662A JP 2715380 A JP2715380 A JP 2715380A JP 2715380 A JP2715380 A JP 2715380A JP S56122662 A JPS56122662 A JP S56122662A
- Authority
- JP
- Japan
- Prior art keywords
- antiferromagnetic
- chromium
- invar alloy
- ingot
- temperature
- 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 prevent casting cracks by suppressing occurrences of strains during the course of cooling, by casting the molten metal of antiferromagnetic chromium invar alloy in a ceramic mold in an inert gaseous atmosphere and cooling it slowly after it is maintained at a specified temperature.
CONSTITUTION: The antiferromagnetic chromium invar alloy is melted in an inert gaseous atmosphere by using an induction furnace. This molten metal is poured into a ceramic mold and casted and it is red heated by maintaining it for ≥30min in the range defined by 1,300°CW1,100°C temperature. The molten metal is cooled slowly at ≤5°C/min cooling rate in the range defined by 1,000°CW400°C temperature so that no temperature difference is generated substantially between the surface and the central part of ingot. In this way, a sound ingot is manufactured in a industrial scale without generating minute cracks in the inside of the ingot.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55027153A JPS5820699B2 (en) | 1980-03-04 | 1980-03-04 | Method for preventing casting cracks in large antiferromagnetic chromium-based Invar alloy ingots |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55027153A JPS5820699B2 (en) | 1980-03-04 | 1980-03-04 | Method for preventing casting cracks in large antiferromagnetic chromium-based Invar alloy ingots |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56122662A true JPS56122662A (en) | 1981-09-26 |
JPS5820699B2 JPS5820699B2 (en) | 1983-04-25 |
Family
ID=12213096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55027153A Expired JPS5820699B2 (en) | 1980-03-04 | 1980-03-04 | Method for preventing casting cracks in large antiferromagnetic chromium-based Invar alloy ingots |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5820699B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61163252A (en) * | 1985-01-11 | 1986-07-23 | Shin Etsu Chem Co Ltd | Manufacture of magnetic co-fe-al-b alloy |
US4895592A (en) * | 1987-12-14 | 1990-01-23 | Eastman Kodak Company | High purity sputtering target material and method for preparing high purity sputtering target materials |
US5288228A (en) * | 1989-11-17 | 1994-02-22 | Kubota Corporation | Heat-resistant materials |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4867110A (en) * | 1971-12-17 | 1973-09-13 |
-
1980
- 1980-03-04 JP JP55027153A patent/JPS5820699B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4867110A (en) * | 1971-12-17 | 1973-09-13 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61163252A (en) * | 1985-01-11 | 1986-07-23 | Shin Etsu Chem Co Ltd | Manufacture of magnetic co-fe-al-b alloy |
US4895592A (en) * | 1987-12-14 | 1990-01-23 | Eastman Kodak Company | High purity sputtering target material and method for preparing high purity sputtering target materials |
US5288228A (en) * | 1989-11-17 | 1994-02-22 | Kubota Corporation | Heat-resistant materials |
Also Published As
Publication number | Publication date |
---|---|
JPS5820699B2 (en) | 1983-04-25 |
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