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    SINTERED MAGNET PRODUCTION DEVICE AND SINTERED MAGNET PRODUCTION METHOD
    1.
    发明公开
    SINTERED MAGNET PRODUCTION DEVICE AND SINTERED MAGNET PRODUCTION METHOD 审中-公开
    器具，用于产生一种生产烧结磁体的烧结磁铁和方法

    公开(公告)号：EP2955731A4

    公开(公告)日：2016-01-20

    申请号：EP14748535

    申请日：2014-02-03

    申请人： INTERMETALLICS CO LTD ,  DAIDO STEEL CO LTD

    发明人： SAGAWA MASATO ,  MIZOGUCHI TETSUHIKO ,  YOSHIKAWA NORIO

    IPC分类号： H01F41/02 ,  B22F3/00 ,  B22F3/02 ,  B22F3/10 ,  H01F1/055 ,  H01F1/057 ,  H01F1/08 ,  H01F13/00

    CPC分类号： H01F41/0273 ,  B22F3/10 ,  C22C2202/02 ,  F27B9/067 ,  F27B9/20 ,  F27B9/36 ,  F27B9/38 ,  F27D5/00 ,  Y02P10/253

    摘要： The present invention addresses the problem of providing a sintered magnet production system using a press-less method capable of minimizing the distortion of a sintered magnet. It is a system including: a filling device 11 for filling a cavity 211 of a container 21 with alloy powder of a material for a sintered magnet; an orienting section 13 for orienting the alloy powder held in the cavity 211 by applying a magnetic field without applying a mechanical pressure to the alloy powder; and a sintering section 15 for sintering the alloy powder oriented by the orienting section 13, by heating the alloy powder without applying a mechanical pressure to the alloy powder. The orienting section includes: an air-core coil 131; and two ferromagnetic members 132 made of a ferromagnetic material to be arranged within the air-core coil 131 at respective open ends of the air-core coil 131 with a space for containing the container 21 in between. The ferromagnetic members 132 adjust the magnetic field within the air-core coil 131 toward a direction parallel to the axis of the air-core coil 131, whereby the distortion of a sintered magnet is minimized.