Title:
METHOD FOR MANUFACTURING HOT-DEFORMED PERMANENT MAGNET
Document Type and Number:
WIPO Patent Application WO/2022/191349
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing a hot-deformed permanent magnet, comprising the steps of: preparing NdFeB magnetic powder; mixing the NdFeB magnetic powder and ReF3 (Re is a rare earth metal other than the rare earth metals contained in NdFeB) powder; hot press-forming a mixture in which the ReF3 powder is attached to the surface of the NdFeB magnetic powder; hot deforming a hot press-formed product; performing primary post-heat treatment on the hot-deformed anisotropic permanent magnet; and performing secondary post-heat treatment on the anisotropic permanent magnet that has been primary post-heat treated.
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Inventors:
AHN JONGBIN (KR)
Application Number:
PCT/KR2021/003122
Publication Date:
September 15, 2022
Filing Date:
March 12, 2021
Export Citation:
Assignee:
DAE IL CORP (KR)
International Classes:
H01F41/02; B22F3/12; H01F1/053; H01F1/08
Foreign References:
| KR20150033423A | 2015-04-01 | |||
| KR101918975B1 | 2018-11-16 | |||
| KR20180067760A | 2018-06-21 | |||
| JP2015126081A | 2015-07-06 | |||
| US20150132174A1 | 2015-05-14 |
Attorney, Agent or Firm:
SMART PATENT LAW FIRM (KR)
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