Title:
HIGH-DENSITY COMPRESSED BONDED MAGNET AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2003297621
Kind Code:
A
Abstract:
To obtain a high-density compressed bonded magnet, having high magnetic characteristics, while maintaining high productivity.
This compressed bonded magnet R is obtained, by compression molding a composition M for resin magnet prepared by mixing magnetic powder in a binder, composed of a thermosetting material in a scattered state. The thermosetting material is one which is cured within 60 seconds; and at manufacturing of this magnet R, the composition M for resin magnet is cured and released from a mold within 60 seconds by heating the binder, under a state where the composition M is pressurized under at 7-20 tons/cm2.
Inventors:
TAMURA HAJIME
KIKUCHI MASAMI
KIKUCHI MASAMI
Application Number:
JP2003026097A
Publication Date:
October 17, 2003
Filing Date:
February 03, 2003
Export Citation:
Assignee:
BRIDGESTONE CORP
International Classes:
B22F3/00; B22F3/02; H01F1/08; H01F1/113; H01F41/02; (IPC1-7): H01F1/08; B22F3/00; B22F3/02; H01F1/113; H01F41/02
Attorney, Agent or Firm:
Sugimura Kosaku