| 简介 |
PROBLEM TO BE SOLVED : To provide a manufacturing apparatus for a rare earth magnet in which thermal energy which is received in manufacturing steps from sintered compact to oriented magnet is reduced, crystal particles can be prevented from becoming coarse and manufacturing efficiency can be improved, and to provide a manufacturing method for the rare earth magnet.
SOLUTION : A manufacturing apparatus 10 comprises at least a die 4 including a hollow where a first hollow 4a of which the cross-sectional area is relatively large and a second hollow 4b of which the cross-sectional area is relatively small are communicated, a first punch 2 which is freely movable within the first hollow, a second punch 3 which is freely movable within the second hollow, main drivers 5, 6 which make the first and second punches 2 and 3 close to each other or separate from each other, and a sub driver 7 which moves the die 4 relatively with respect to the first and second punches 2 and 3. The inside of a cavity C formed from the die 4 and the first and second punches 2 and 3 is filled with a powder (p) that becomes a rare earth magnet material, and a rare earth magnet is manufactured through movement control of the first and second punches 2 and 3, movement control of the die 4 and heating control.
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