Method of manufacturing rare earth magnet and powder compacting apparatus
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United States of America Patent
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Mar 21, 2006
Grant Date -
Nov 13, 2003
app pub date -
Jun 12, 2003
filing date -
Jun 29, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for manufacturing a rare earth magnet is disclosed. In a first step, a compact is produced by compacting rare earth alloy powder in a predetermined space in an orienting magnetic field. Next, a demagnetizing process is performed for the compact, and the compact is ejected from the predetermined space. Then, a additional demagnetizing process is performed for magnetic powder adhering to a surface of the compact by applying an magnetic field to the compact after the compact is ejected.
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