SINTERED MAGNET PRODUCTION SYSTEM AND SINTERED MAGNET PRODUCTION METHOD
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United States of America Patent
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Dec 24, 2015
app pub date -
Feb 3, 2014
filing date -
Feb 5, 2013
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Abstract
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.
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