SINTERED MAGNET MANUFACTURING MOLD AND SINTERED MAGNET MANUFACTURING METHOD USING THE MOLD

摘要

PROBLEM TO BE SOLVED: To provide a sintered magnet manufacturing mold capable of increasing the usage life even when a sintered magnet having a form which is not simple like an arc shape is manufactured.;SOLUTION: A mold 10 is for performing distribution and sinter without compression formation after an alloy powder as a raw material of a sintered magnet is filled, and comprises: a main body that is made of a material having heat resistance for a temperature at the time of the sinter, and includes a cavity 111 in which a peripheral edge of an opening forms a plane surface; and a lid that covers the opening of the cavity in a plane region, is made of the material having heat resistance for the temperature, and in which a part including the plane region is made of a ceramic (a ceramic film 12). By laminating the plurality of molds 10, each mold 10 is functioned as the lid of the mold 10 positioned lower than one of them. The alloy powder is filled by the cavity 111 and is covered with the lid, and the upper and lower parts are reversed before a sinter step, thereby burning at the sinter and abrasion of each mold can be prevented, and the life of each mold can be improved.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT