Title:
永久磁石の製造方法
Document Type and Number:
Japanese Patent JP4914922
Kind Code:
B2
Abstract:
Crystal fractured surfaces of raw meal powder having more equal crystal orientation relationship in the magnetic field are arranged to be assembled together so that a method of manufacturing a permanent magnet which has an extremely high degree of orientation can be provided. In this invention, raw meal powder (P) is filled into a cavity, the raw meal powder (P) is oriented in the magnetic field while being pressed or urged by pressing means that has a smaller area than the cross-sectional area of the cavity. Semi-finished product thus oriented is compression-molded into a predetermined shape in the magnetic field.
Inventors:
Hiroshi Nagata
Araigaki Yoshinori
Araigaki Yoshinori
Application Number:
JP2009547132A
Publication Date:
April 11, 2012
Filing Date:
December 25, 2008
Export Citation:
Assignee:
ULVAC, Inc.
International Classes:
H01F41/02; B22F3/00; B22F3/02; B22F9/04; C22C33/02; H01F1/053; H01F1/08
Domestic Patent References:
| JPH06325962A | 1994-11-25 | |||
| JPH09312229A | 1997-12-02 | |||
| JPH05247601A | 1993-09-24 |
Attorney, Agent or Firm:
Seiryu Corporation