Method for manufacturing permanent magnet, and permanent magnet
    10.
    发明专利
    Method for manufacturing permanent magnet, and permanent magnet 有权
    制造永磁体和永磁体的方法

    公开(公告)号:JP2008091867A

    公开(公告)日:2008-04-17

    申请号:JP2007176579

    申请日:2007-07-04

    IPC分类号: H01F41/02

    摘要: PROBLEM TO BE SOLVED: To provide a method for manufacturing a permanent magnet exhibiting excellent magnetic properties by means of extrusion which provides high material yield and high non-defective rate, and to provide the permanent magnet.
    SOLUTION: In the permanent magnet formed by extruding a preform, the preform is extruded in such a way that a dimension of a cross section of the preform is reduced in an X-direction and enlarged in a Y-direction perpendicular to the X-direction. As a result, the permanent magnet has a strain ratio ε
    2 /ε
    1 with respect to the preform in a range of 0.2 to 3.5, in which ε
    1 is a strain in the direction of the extrusion of the preform and ε
    2 is a strain in the Y-direction.
    COPYRIGHT: (C)2008,JPO&INPIT

    摘要翻译: 要解决的问题:提供一种通过挤出产生优异的磁性能的永磁体的制造方法,其提供高的材料产率和高的无缺陷率,并提供永磁体。 解决方案:在通过挤压预成型件形成的永磁体中,预成型件以这样的方式被挤出,使得预成型件的横截面的尺寸在X方向上减小,并且在垂直于 X方向。 结果,永久磁铁相对于预制件的应变比ε 2 1 在0.2〜3.5的范围内,其中ε 1 是在预成型件的挤出方向上的应变,ε 2 是Y方向的应变。 版权所有(C)2008,JPO&INPIT