JPS54109199A - Method of fabricating permanent magnets - Google Patents
Method of fabricating permanent magnetsInfo
- Publication number
- JPS54109199A JPS54109199A JP1730078A JP1730078A JPS54109199A JP S54109199 A JPS54109199 A JP S54109199A JP 1730078 A JP1730078 A JP 1730078A JP 1730078 A JP1730078 A JP 1730078A JP S54109199 A JPS54109199 A JP S54109199A
- Authority
- JP
- Japan
- Prior art keywords
- mixture
- weight
- magnetic field
- ferromagnetic powder
- same
- 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
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE: To provide the subject method comprising heat-melting a mixture of a ferromagnetic powder having a magnetic anisotropy, polyamide and a metal salt of stearic acid, and shaping and solidifying the same in a predetermined shape in a magnetic field, thereby mass producing permanent magnets having excellent heat resistance and magnetic characteristics at cheap costs.
CONSTITUTION: There is provided a mixture consisting of preferably 85 to 91% by weight of a ferromagnetic powder having a magnetic anisotropy, expressed by the general formula, MO.nFe2O3, wherer M represents Ba, and n is an integer from 5 to 6, 8 to 15 % by weight of polyamide expressed by the general formula, HO [-CO(CH2)5NH-]mH, and 0.1 to 2% by weight of a metal salt of stearic acid having a melting temperatur of from 140 to 200°C. Then, the thus prepared mixture is heat- melt preferably to 230 to 290°C to bring said ferromagnetic powder to a state where it can move freely, and then the mixture is injected into a shaping metal mold provided with a magnetic field applying device, a magnetic field is applied thereto to magnetize the same, and thereafter cool and solidity the same.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53017300A JPS6037603B2 (en) | 1978-02-16 | 1978-02-16 | permanent magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53017300A JPS6037603B2 (en) | 1978-02-16 | 1978-02-16 | permanent magnet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54109199A true JPS54109199A (en) | 1979-08-27 |
JPS6037603B2 JPS6037603B2 (en) | 1985-08-27 |
Family
ID=11940142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53017300A Expired JPS6037603B2 (en) | 1978-02-16 | 1978-02-16 | permanent magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6037603B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59165403A (en) * | 1983-03-10 | 1984-09-18 | Matsushita Electric Ind Co Ltd | Resin magnet composition substance |
EP0273748A2 (en) * | 1986-12-27 | 1988-07-06 | Toda Kogyo Corp. | Plate-like magnetoplumbite type ferrite particles for magnetic recording and magnetic recording media using the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5213695A (en) * | 1975-07-22 | 1977-02-02 | Matsushita Electric Ind Co Ltd | Method to manufacture the resin magnet composition |
-
1978
- 1978-02-16 JP JP53017300A patent/JPS6037603B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5213695A (en) * | 1975-07-22 | 1977-02-02 | Matsushita Electric Ind Co Ltd | Method to manufacture the resin magnet composition |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59165403A (en) * | 1983-03-10 | 1984-09-18 | Matsushita Electric Ind Co Ltd | Resin magnet composition substance |
JPH0458681B2 (en) * | 1983-03-10 | 1992-09-18 | Matsushita Electric Ind Co Ltd | |
EP0273748A2 (en) * | 1986-12-27 | 1988-07-06 | Toda Kogyo Corp. | Plate-like magnetoplumbite type ferrite particles for magnetic recording and magnetic recording media using the same |
Also Published As
Publication number | Publication date |
---|---|
JPS6037603B2 (en) | 1985-08-27 |
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