Title:
PERMANENT MAGNET MANUFACTURING METHOD AND MAGNETIZING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/224628
Kind Code:
A1
Abstract:
A permanent magnet manufacturing method, according to an embodiment of the present invention, includes: a heating step in which a magnetizing permanent magnet, that applies a magnetizing magnetic field to an object-to-be-magnetized, arranges a plurality of arrayed field parts at prescribed intervals near the object-to-be-magnetized and increases the temperature of the object-to-be-magnetized to a temperature equal to or greater than the Curie point of the object-to-be-magnetized; and a magnetization step in which the object-to-be-magnetized having reached a temperature equal to or greater than said Curie point is decreased in temperature to a temperature lower than said Curie point, and the magnetizing magnetic field continues to be applied to the object-to-be-magnetized by the field parts. The magnetizing permanent magnet is an isotropic SmCo sintered magnet having a prescribed shape.
Inventors:
KOMURA HARUHIRO (JP)
OKAWARA YU (JP)
NISHIGUCHI KAORU (JP)
AIDA SATOSHI (JP)
OKAWARA YU (JP)
NISHIGUCHI KAORU (JP)
AIDA SATOSHI (JP)
Application Number:
PCT/JP2022/011299
Publication Date:
October 27, 2022
Filing Date:
March 14, 2022
Export Citation:
Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
H01F13/00; H01F7/02; H01F41/02
Foreign References:
| JP2019102583A | 2019-06-24 | |||
| JP2006203173A | 2006-08-03 |
Attorney, Agent or Firm:
TORANOMON INTELLECTUAL PROPERTY FIRM (JP)
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