Method of manufacturing a radially oriented magnet

Details Method of manufacturing a radially oriented magnet Method of manufacturing a radially oriented magnet

1994-03-10

1997-05-06

Jordan, Charles T.

Powder metallurgy processes

Forming articles by uniting randomly associated metal particles

Powder pretreatment

419 66, 29607, 505924, B22F 302

Patent

active

056280475

ABSTRACT:
A method of manufacturing a radially oriented magnet comprises disposing magnetic particles in a mold comprised of an insulating material, applying a pulsed magnetic field to the magnetic particles using a pair of pulse coils to impart a radial direction of magnetization to the magnetic particles, and press-forming the magnetic particles. The effective amount of magnetic flux which is applied to the magnetic particles can be effectively increased by introducing a pair of conducting rings between the pair of pulse coils for generating an eddy current effect between the pair of pulse coils to control the magnetic flux of the pulsed magnetic field. Such a method enables the manufacture of a downsized radially oriented magnet having a high degree of orientation.

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patent: 5338372 (1994-08-01), Tabaru

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