Method for producing rare earth anisotropic bond magnets, method for orientation processing of magnetic molded bodies, and in-magnetic filed molding apparatus
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United States of America Patent
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Aug 20, 2009
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Sep 12, 2008
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Abstract
The present invention relates to a method for producing a rare earth anisotropic bond magnet containing a hollow cylindrically shaped magnetic molded body having, at the hollow cylindrically shaped side face thereof, at least 4 or more orientation portions that are oriented with semi-radial distribution by compression molding of a magnetic material after thermally orienting step, wherein intermediate aligning magnetic fields applied in the thermally orienting step to between adjacent cavities are the mostly same in their magnetic directions. A plurality of rare earth anisotropic bond magnets can be efficiently produced at one time.
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