To make it possible to effectively control a mold temperature by forming a metal porous layer having a specific porosity and pore size of hot isotropic pressure sintered material having a plurality of types of metal particles including different thermal conductivities uniformly dispersively mixed in a surface layer area of a cavity side, and connecting a heat exchange medium flow tube.
The fine pores of a metal porous layer 11 for forming the inner surface of the cavity of a mold 10 are used as heat exchange medium channels. Thus, the porosity of the layer 11 is set to 7 to 50% to provide efficient heat exchange with remarkably large contact surface area with the medium per unit volume of the mold 10. The mechanical strength is reduced, and the pore size is so limited to 500μm or less as not to lose the suitability as a mold material. The layer 11 is formed as mixed phase sintered material having a plurality of types of metal particles including different thermal conductivities uniformly dispersively mixed, and heat resistance and cooling properties necessary for the mold 10 can be incorporated as the plurality of types of mixing effects.
INUI KAZUYUKI
OKANO HIROAKI
YAMAGUCHI HIROSHI
FUNAKOSHI ATSUSHI
NISHI TAKASHI
KOSAKA AKIRA
