JPS57114628A - Manufacture of permanent magnet - Google Patents
Manufacture of permanent magnetInfo
- Publication number
- JPS57114628A JPS57114628A JP55188090A JP18809080A JPS57114628A JP S57114628 A JPS57114628 A JP S57114628A JP 55188090 A JP55188090 A JP 55188090A JP 18809080 A JP18809080 A JP 18809080A JP S57114628 A JPS57114628 A JP S57114628A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- mold
- alloy
- ingot
- manufacture
- 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
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE: To grow columnar crystals over the whole alloy ingot and to obtain a permanent magnet by melting an R(TM)7W9 alloy consisting of a rare earth metal R and a transition metal TM and by pouring the molten alloy into a mold from the bottom at the time of casting.
CONSTITUTION: An R(TM)7W9 alloy consisting of a rare earth metal R and a transition metal TM is melted in a high frequency induction furnace and introduced into a mold 4 from the bottom through a receiving inlet 6 and a runner 7. The molten alloy 5 rises in the mold 4 slowly. The resulting ingot contains 60W 70% columnar crystals. This ingot is heat treated, pulverized, mixed with a binder, molded in a magnetic field, and calcined by heating to manufacture a permanent magnet.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55188090A JPS57114628A (en) | 1980-12-29 | 1980-12-29 | Manufacture of permanent magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55188090A JPS57114628A (en) | 1980-12-29 | 1980-12-29 | Manufacture of permanent magnet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57114628A true JPS57114628A (en) | 1982-07-16 |
JPS6223060B2 JPS6223060B2 (en) | 1987-05-21 |
Family
ID=16217522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55188090A Granted JPS57114628A (en) | 1980-12-29 | 1980-12-29 | Manufacture of permanent magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57114628A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59118827A (en) * | 1982-12-24 | 1984-07-09 | Seiko Epson Corp | Production of rare earth cobalt permanent magnet |
JPS60224722A (en) * | 1984-04-23 | 1985-11-09 | Tohoku Metal Ind Ltd | Manufacture of anisotropic composite magnet |
JP2007157864A (en) * | 2005-12-02 | 2007-06-21 | Mitsubishi Electric Corp | Alloy for rare-earth iron-boron based magnet, manufacturing method therefor and manufacturing device thereof |
-
1980
- 1980-12-29 JP JP55188090A patent/JPS57114628A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59118827A (en) * | 1982-12-24 | 1984-07-09 | Seiko Epson Corp | Production of rare earth cobalt permanent magnet |
JPS60224722A (en) * | 1984-04-23 | 1985-11-09 | Tohoku Metal Ind Ltd | Manufacture of anisotropic composite magnet |
JPH0340081B2 (en) * | 1984-04-23 | 1991-06-17 | ||
JP2007157864A (en) * | 2005-12-02 | 2007-06-21 | Mitsubishi Electric Corp | Alloy for rare-earth iron-boron based magnet, manufacturing method therefor and manufacturing device thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS6223060B2 (en) | 1987-05-21 |
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