| 简介 |
PROBLEM TO BE SOLVED : To provide : a rare earth-iron bonded magnet simple and reduced in cost while having high magnetized properties, and adaptable even to a rare earth-iron bonded magnet having large heat capacity; and methods for manufacturing a rotor and an electromagnetic device using the rare earth-iron bonded magnet.SOLUTION : A heating set temperature of a device used in a magnetization process can be reduced by using a rare earth-iron bonded magnet before magnetized, the rare earth-iron bonded magnet including two or more kinds among Nd, Pr and Ce, as rare earth elements, and having a Curie temperature of 250°C or above and less than 290°C, so that a device used in magnetization process has a lower heating set temperature and magnetization condition has a relatively lower heating temperature, and the load of the device can be reduced. Accordingly, a rare earth-iron bonded magnet exhibiting high magnetized properties can be obtained even from a bonded magnet large in volume and high in heat capacity. |
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