MOLD FOR MANUFACTURING SINTERED MAGNET AND METHOD OF MANUFACTURING SINTERED MAGNET

摘要

The present invention relates to a mold for manufacturing a sintered magnet, the mold containing: a main body having an opening; and a lid that covers the opening and has an inner surface which is located on a main body side in a state of covering the opening, in which the inner surface has a plane surface which intersects with an inner wall surface of the main body at an obtuse angle, or has a curved surface where a tangent plane of each point on an intersection line with the inner wall surface intersects with the inner wall surface at an obtuse angle.

主权项

1. A mold for manufacturing a sintered magnet by filling the mold with an alloy powder of raw materials of a sintered magnet and then orienting and sintering the alloy powder in a state of being put into the mold without compression-molding the alloy powder, the mold comprising:
a) a main body having an opening; and b) a lid that covers the opening and has an inner surface which is located on a main body side in a state of covering the opening, wherein the inner surface has a plane surface which intersects with an inner wall surface of the main body at an obtuse angle, or has a curved surface where a tangent plane of each point on an intersection line with the inner wall surface intersects with the inner wall surface at an obtuse angle.