| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a powder compact, capable of suppressing occurrence of cracking and chipping. <P>SOLUTION: The method for manufacturing the powder compact 10 includes a compacting process for allowing both pestles 3, 4 to be abutted to carry out compacting of a raw material so that a predetermined gap G is generated between a circumferential edge 32a of a mold surface 32 of an upper pestle 3 and a circumferential edge 42a of a mold surface 42 of a lower pestle 4. The raw material is interposed in the gap G between the circumferential edge 32a of the mold surface 32 of the upper pestle 3 and the circumferential edge 42a of the mold surface 42 of the lower pestle 4 and the raw material interposed in the gap G is compacted. The upper pestle 3 or the lower pestle 4 where at least one of the mold surface 32 of the upper pestle 3 and the mold surface 42 of the lower pestle 4 has a recess and at least parts of the circumferential edges 32a, 42a of the mold surfaces 32, 42 include plane parts P with a width of 1.5 mm or less is used. <P>COPYRIGHT: (C)2012,JPO&INPIT |
