| 摘要 |
PROBLEM TO BE SOLVED: To provide a die apparatus for compacting powder, which can shorten the forming cycle, and can smoothly compress material powder by a forming die body and a punch. SOLUTION: Material powder M is supplied into a forming portion 6 formed in the die 2. The powder compact 101 is formed by compressing the material powder M by inserting a lower punch 4 into the forming portion 6. A cooling fluid passage 14 is provided to cool the forming portion 6. Defects caused by the thermal expansion of the forming section 6 due to the temperature rise is eliminated by cooling the forming portion 6 by means of the cooling fluid passage 14 provided so as to have a helicoidal shape. Thus, the compression of the material powder M can be smoothly performed by means of the die 2 and the lower punch 4. COPYRIGHT: (C)2007,JPO&INPIT
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