Gm Global Technolgoy Operations, Inc.

Daido Tokushuko Kabushiki Kaisha

Daido Tokushuko K.k.

Teruo Watanabe

Norio Yoshikawa

Yasuaki Kasai

Yutaka Yoshida

Hiyoshi Yamada

Viswanathan Panchanathan

Shinichiro Yahagi

Makoto Saito

Toshiya Kinami

The ability to hot work RE-Fe-B type compositions to form anisotropic magnets containing Nd.sub.2 Fe.sub.14 B.sub.1 -type crystal grains is improved by the addition of suitable, small amounts of one or more of cerium, lanthanum or yttrium. The improvement in hot working is seen in the reduction of cracks in the deformed body and in the ability to reduce the hot working temperature without a significant penalty in magnetic properties.

Rare earth magnet alloys with excellent hot workability

A method of forming a cylindrical compact for a cylindrical magnet is improved by moving a core pin and a die of a mold at the same time of pressing magnet materials with a pressing punch in the same direction as that of the pressing punch at travelling speed Vc and Vd indicated by following equation:

Method of forming thin-walled elongated cylindrical compact for a magnet

A method for producing an anisotropic rare earth magnet is improved by applying compressing stress on a free surface of an compacted material at the time of extruding the compacted material in order to prevent forming cracks, and improved by using a double action punch provided with a core punch and a sleeve punch so as to mold a compacted material and extrude the compacted material into the anisotropic magnet material in a single heat process continuously.

Method and apparatus for producing anisotropic rare earth magnet

Growing community of inventors

Aichi, Japan

Teruo Watanabe