SINTERED MAGNET PRODUCTION SYSTEM AND SINTERED MAGNET PRODUCTION METHOD

摘要

A sintered magnet production system using a press-less method capable of minimizing the distortion of a sintered magnet includes: a filling device for filling a container cavity with alloy powder for a sintered magnet; an orienting section for orienting the powder in the cavity by applying a magnetic field without applying a mechanical pressure to the powder; and a sintering section for sintering the powder oriented by the orienting section, by heating the powder without applying a mechanical pressure to the powder. The orienting section includes: an air-core coil; and two ferromagnetic members made of a ferromagnetic material arranged within the coil at respective open ends of the coil with a space for containing the container in between. The ferromagnetic members adjust the magnetic field within the coil toward a direction parallel to the axis of the coil, whereby distortion of a sintered magnet is minimized.

主权项

1. A sintered magnet production system including: a filling device for filling a cavity of a container with alloy powder of a material for a sintered magnet; an orienting device for orienting the alloy powder held in the cavity by applying a magnetic field without applying a mechanical pressure to the alloy powder; and a sintering device for sintering the alloy powder oriented by the orienting device, by heating the alloy powder without applying a mechanical pressure to the alloy powder, wherein:
the orienting device includes: a) an air-core coil; and b) two ferromagnetic members made of a ferromagnetic material to be arranged within the air-core coil at respective open ends of the air-core coil with a space for containing the container in between.