公开(公告)号：US20160303651A1

公开(公告)日：2016-10-20

申请号：US15094706

申请日：2016-04-08

Applicant: JTEKT CORPORATION

Inventor： Takumi MIO ,  Koji NISHI ,  Yusuke KIMOTO ,  Takashi TAMURA

IPC: B22F1/00 ,  H01F41/02 ,  H01F1/053

CPC classification number: B22F1/0014 ,  B22F1/0059 ,  H01F1/053 ,  H01F1/059 ,  H01F1/06 ,  H01F1/08 ,  H01F41/0266

Abstract: A magnet manufacturing method has a step of preparing magnetic powder of a hard magnetic material, which includes one or more of an Fe-N-based compound and an R-Fe-N-based compound, a step of pressurizing and molding the magnetic powder at a pressure equal to or higher than a fracture pressure at which the particles of the magnetic powder are destroyed, to obtain a primary molding, and a step of heating the primary molding at a temperature lower than a decomposition temperature of the magnetic powder. The magnetic powder has at least two peaks in a particle size distribution.

Abstract translation: 磁铁制造方法具有制备硬磁性材料的磁性粉末的步骤，其包括Fe-N基化合物和R-Fe-N基化合物中的一种或多种，​​对磁性粉末进行加压和成型的步骤 在等于或高于破坏磁粉的颗粒的断裂压力的压力下获得一次成型，以及在低于磁粉的分解温度的温度下加热一次成型体的步骤。 磁粉在粒度分布中具有至少两个峰。