Patent ID: 9682420
Date: 2017-06-20
CPC Classifications: B21J,B21K

Claim:
1. A forging die device used for high-temperature forging of a forging material, comprising: an upper die and a lower die configured to be brought together to forge the forging material between forming surfaces of the upper and lower dies; an upper die holder which surrounds an outer periphery of the upper die and holds the upper die in place relative to the upper die holder; a lower die holder which surrounds an outer periphery of the lower die and holds the lower die in place relative to the lower die holder; a die heating unit configured to heat at least one of the upper die and the lower die; an upper die holder heating unit surrounding the upper die holder for heating the upper die holder; and a lower die holder heating unit, provided separately from the upper die holder heating unit, which surrounds the lower die holder for heating the lower die holder, the upper and lower die holder heating units both being disposed in a non-contact manner relative to the upper and lower die holders and provided separately from the die heating unit.