SINTERING DIE FOR ELECTRIC PRESSURIZING AND SINTERING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a sintering die for an electric pressurizing and sintering device by which, even if powder of a stock having a high thermal expansion coefficient is sintered into a hollow sintered product, the breakage of the sintered product can be prevented, and the sintered product can be formed with high precision. SOLUTION: The sintering die 80 of an electric pressurizing and sintering device comprises: a mold 81 having a hollow part: a pair of upper and lower punches 82 and 83 fitted to the hollow part of the mold 81 so as to freely be inserted and detached; and a core 200 arranged between a pair of the upper and lower punches 82 and 83 at the hollow part of the mold 81. The stock of the core 200 has a thermal expansion coefficient equal to that of the powder m to be sintered. COPYRIGHT: (C)2005,JPO&NCIPI