| 简介 |
PROBLEM TO BE SOLVED : To provide a method for producing a rare earth sintered magnet by which a high magnetic property can be kept while improving the strength of a molding regardless of a lubricant to increase a working yield.
SOLUTION : The method for producing a rare earth sintered magnet is provided with : a molding stage S2 where a magnetic field is applied to the pulverized powder of raw material alloy powder, and also, press molding is performed thereto, so as to obtain a molding; a heat treatment stage S3 where the molding is subjected to heat treatment for improving its strength in a nonoxidizing atmosphere; a working stage S4 where the heat-treated molding is subjected to machining; and a sintering stage S5 where the machined molding is sintered. Namely, the strength of the molding is increased by the heat treatment before the working, a working yield can be improved.
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