Title:
MANUFACTURING METHOD OF RARE EARTH MAGNET
Document Type and Number:
Japanese Patent JP2017022208
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a rare earth magnet, achieving good wettability of a lubricant (lubricating liquid) relative to a sintered body in manufacturing a rare earth magnet by attaching the lubricant (lubricating liquid) to the sintered body to perform hot plasticity processing.SOLUTION: A manufacturing method of a rare earth magnet includes: a first step of coating a mold release agent R containing a solid lubricant on an inner face of a mold M, housing powder for a magnet in the mold M, and compression-molding and sintering the powder to manufacture a sintered body S; and a second step of immersing the sintered body S into a lubricating liquid L that contains a solid lubricant, attaching the solid lubricant on the surface of the sintered body S while applying supersonic vibration, and subjecting the sintered body S to hot plasticity processing to manufacture a rare earth magnet.SELECTED DRAWING: Figure 2
Inventors:
YAMASHITA OSAMU
Application Number:
JP2015137038A
Publication Date:
January 26, 2017
Filing Date:
July 08, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01F41/02; B21J3/00; B21J5/00; B22F3/00; B22F3/26; B30B11/00; H01F1/057; H01F1/08
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Ishikawa Takiharu
Sekiya Mitsuo
Ishikawa Takiharu