| 摘要 |
PURPOSE:To make improvements in strength, abrasion resistance and tenacity, by constituting it in a way of putting a work part consisting of a highly hard material and a support part consisting of a highly strength material solidly together by means of homogeneous joining via a joining surface, in case of a press metal mold punch or the like. CONSTITUTION:A punch tip molding part 1, manufactured with a sintered hard alloy or ceramics composed of more than one type of a carbide, a nitride, a carbon nitride, boride and a silicide of periodic table 4a, 5a, 6a group metals and more than one type of bond metals of Fe, Co, Ni, etc., and a punch shank part 2 are vacuum-brazed at a joining surface via a brazing material 11 of Cu, Ni systems, etc., and then high temperature hydrostatic pressure applied homogeneous joining takes place. And, otherwise, they are joined together together by means of vacuum hot press homogeneous joining, electron beam welding, cam cell type HIP homogeneous joining, vacuum hot press joining, etc. With this constitution, abrasion resistance, strength and tenacity are all improvable.
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