Title:
METHOD OF MAGNETIZING RARE−EARTH MAGNET AND RARE−EARTH MAGNET
Document Type and Number:
WIPO Patent Application WO/2003/012806
Kind Code:
A1
Abstract:
A method of magnetizing a rare−earth magnet, comprising a step for preparing a rare−earth magnet (22) disposed so as to form a cylinder (22a), a first magnetizing step for forming a first area (R1) magnetized from the inside to the outside of the cylinder (22a) and a second area (R2) magnetized from the outside to the inside thereof by applying a first external field (H1) to the rare−earth magnet (22), and a second magnetizing step for applying a second external field (H2) to a boundary between the first area (R1) and the second area (R2) so that an external field component can be applied in the direction of forming an angle of 0 to less than 50°relative to the direction of the external field component applied in the first magnetizing step.
Inventors:
SAKAGUCHI EIJI (JP)
MORIMOTO HITOSHI (JP)
MORIMOTO HITOSHI (JP)
Application Number:
PCT/JP2002/007692
Publication Date:
February 13, 2003
Filing Date:
July 29, 2002
Export Citation:
Assignee:
SUMITOMO SPEC METALS (JP)
SAKAGUCHI EIJI (JP)
MORIMOTO HITOSHI (JP)
SAKAGUCHI EIJI (JP)
MORIMOTO HITOSHI (JP)
International Classes:
H01F13/00; H02K15/03; (IPC1-7): H01F13/00
Foreign References:
| JPS62149109A | 1987-07-03 | |||
| JPH10270247A | 1998-10-09 |
Attorney, Agent or Firm:
Okuda, Seiji (Kataoka Bldg. 3-6 Uchiawajimachi 1-chome
Chuo-ku Osaka-shi, Osaka, JP)
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