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Method of manufacturing sintered body for sintered magnet and method of manufacturing permanent magnet using sintered body for forming sintered magnet

机译:烧结磁体用烧结体的制造方法以及使用该烧结体形成用烧结体的永磁体的制造方法

摘要

A method of manufacturing a sintered body for forming a sintered magnet and a method of manufacturing a permanent magnet which prevent the occurrence of cracks in a molded body while improving followability of the sintered body in sintering. Specifically, the magnet raw material is pulverized with a magnet powder, and the pulverized magnet powder and the binder are mixed to produce the compound (12). Then, the formed body 13 of the compound 12 thus formed is heated to a sintering temperature at a predetermined heating rate in a pressurized state, and sintered by keeping it at a sintering temperature. In the sintering step, the pressing force for pressing the formed body 13 is made to be less than 3 MPa until the predetermined timing during the temperature rise of the formed body 13 after the temperature rise of the formed body 13 is started, Is 3 MPa or more.
机译:一种用于形成烧结磁体的烧结体的制造方法和一种永磁体的制造方法,其在提高烧结体在烧结过程中的跟随性的同时,防止了成型体中产生裂纹。具体地,将磁体原料用磁体粉末粉碎,并将粉碎的磁体粉末和粘合剂混合以制备化合物(12)。然后,将如此形成的化合物12的成形体13在加压状态下以预定的加热速率加热至烧结温度,并通过将其保持在烧结温度下进行烧结。在烧结步骤中,直到开始成形体13的温度上升之后,直到成形体13的温度上升期间的预定时刻为止,使对成形体13进行加压的按压力小于3MPa。或者更多。

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