Minebea Company, Limited

Fdk Corporation

Sachiko Shinmura

Mikio Kitaoka

Teruo Kiyomiya

Haruhiro Komura

Ikuo Ohashi

Nobuyuki Sueyoshi

Masutaro Suzuki

A method of magnetizing into a permanent magnet comprises placing magnetizing magnetic field applying means to be adjacent to an object to be magnetized into the permanent magnet, and continuing to apply a magnetizing magnetic field to the object by the magnetizing magnetic field applying means while cooling the object from a temperature of its Curie point or above to a temperature of below the Curie point.

Method of magnetizing into permanent magnet

To provide a magnetizing apparatus and magnetizing method in which, even in preparation of a ring-shaped permanent magnet having a narrow magnetization pitch with multiple poles magnetized on an extremely small diameter, sufficient magnetization and high magnetization quality can be achieved and powerful magnetization can be carried out efficiently and quickly at low cost. A permanent magnet magnetizing apparatus includes a heating section, a magnetizing sectionaxially disposed as a discrete structure from the heating section, and a holding memberfor holding magnetization objectand movable relative to the heating section and the magnetizing section. The magnetization object heated in the heating section is transferred to the magnetizing section and is magnetized therein.

Permanent magnet magnetizing apparatus and permanent magnet magnetizing method

Growing community of inventors

Shizuoka, Japan

Sachiko Shinmura