公开(公告)号：US20090060773A1

公开(公告)日：2009-03-05

申请号：US11718312

申请日：2005-10-28

申请人： Hyoung Tae Kim ,  Yoon Bae Kim ,  Jang Seok Son ,  Ju Won Jeon

发明人： Hyoung Tae Kim ,  Yoon Bae Kim ,  Jang Seok Son ,  Ju Won Jeon

IPC分类号： B22F3/14

CPC分类号： H01F41/0266 ,  B22F3/14 ,  B22F2999/00 ,  C22C1/0441 ,  H01F1/0576 ,  B22F3/105

摘要： A fabrication method of isotropic and anisotropic NdFeB type permanent magnets is disclosed. In the a fabrication method of isotropic and anisotropic NdFeB type permanent magnets, the isotropic and anisotropic NdFeB type permanent magnets can be easily manufactured by means of Joule's heat using a self resistance of a powder molded body by directly applying a DC (Direct Current) to the upper and lower punches and the powder molded body, without using external heating elements or high frequency coils and so on, during press molding of the permanent magnet powder using the punches, and it is simple in terms of structure during the fabrication thereof, so that the manufacturing cost is low.

摘要翻译： 公开了各向同性和各向异性NdFeB型永磁体的制造方法。 在各向同性和各向异性NdFeB型永磁体的制造方法中，通过直接将DC（直流）直接施加到粉末成型体的自身电阻，可以通过焦耳热量容易地制造各向同性和各向异性的NdFeB型永磁体 上下冲头和粉末成型体，在使用冲头的永久磁铁粉末进行加压成型时，不使用外部加热元件或高频线圈等，并且在制造过程中结构简单，因此 制造成本低。