| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve durability of a metal mold having a plurality of open holes provided at intervals on the same circle.SOLUTION: A metal mold for powder molding has an upper surface receiving a powder pressure from above during powder molding, a bottom surface supported from below by the metal mold installation surface of a powder molding machine, a plurality of open holes in the vertical direction provided at intervals on the same circle, and a recessed part including lower ends of the all open holes so that the lower end of each open hole is opened on a position separated upward from the metal mold installation surface.</p> |
