公开(公告)号：US5624503A

公开(公告)日：1997-04-29

申请号：US563355

申请日：1995-11-28

申请人： Fumitoshi Yamashita

发明人： Fumitoshi Yamashita

IPC分类号： H01F1/057 ,  H01F41/02

CPC分类号： H01F1/0578

摘要： A process for producing a magnet in which the content of anisotropic magnet powder is from 95 to 50% by weight. The process includes the following steps. A powder mixture composed of the anisotropic magnet powder and solder powder containing isotropic magnet powder as a main constituent thereof is charged in a compacting mold. The powder mixture in a cavity is orientated in a magnetic field. It is compressed and Joule heated. Thus, the powder mixture is fixed. When the powder mixture is fixed into a magnet, the ratio (Po/Lo) of the average grain size Po of the anisotropic magnet powder to the size of the magnet Lo which size is measured in the orientation direction is preferably 0.6 or more.

摘要翻译： 一种磁铁制造方法，其中各向异性磁铁粉末的含量为95〜50重量％。 该过程包括以下步骤。 将由各向异性磁体粉末和含有各向同性磁体粉末作为其主要成分的焊料粉末组成的粉末混合物装入压实模具中。 空腔中的粉末混合物在磁场中取向。 它被压缩和焦耳加热。 因此，粉末混合物是固定的。 当粉末混合物固定在磁体中时，各向异性磁体粉末的平均晶粒尺寸Po与在取向方向上测量尺寸的磁体Lo的尺寸之比（Po / Lo）优选为0.6以上。