| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a hot-plastic processing Nd-Fe- B magnet with use of an ultraquenched thin strip of powder, which can suitably realize continuous molding without generating a seizure on a die wall surface in a cold-press molding step even when a lot of internal lubricant is not added and mixed to and in the powder, can suitably realize hot-plastic working, and cash provide good magnetic characteristics to the obtained magnet. SOLUTION: Powder 206 obtained by grinding ultraquenched thin strip of an Nd-Fe-B magnet alloy is cold-press molded and then the cold-press molded powder is subjected to cold-plastic working to obtain an Nd-Fe-B magnet. In this case, a die 200 for use in the cold-press molding has a surface roughness of 1.0μm or less, and a very amount of internal lubricant as small as 0.01 weight % or less is added and mixed to and in the powder 206.
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