JPS54109199A - Method of fabricating permanent magnets - Google Patents

Method of fabricating permanent magnets

Info

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
Application number
JP1730078A
Other languages
Japanese (ja)
Other versions
JPS6037603B2 (en
Inventor
Hiroshi Komeno
Osamu Yuri
Miki Hayashi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP53017300A priority Critical patent/JPS6037603B2/en
Publication of JPS54109199A publication Critical patent/JPS54109199A/en
Publication of JPS6037603B2 publication Critical patent/JPS6037603B2/en
Expired legal-status Critical Current

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  • 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
JP53017300A 1978-02-16 1978-02-16 permanent magnet Expired JPS6037603B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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