Patent ID: 11358209

Abstract:
Provided is a method for producing a hot forged material capable of preventing the generation of double-barreling shaped forging defects. The method for producing a hot forged material, wherein both an upper die and a lower die are made of Ni-based super heat-resistant alloy and the method comprises a hot forging step of pressing a material for hot forging by the lower die and the upper die in the air to form the hot forged material, the method comprising: a raw material heating step of heating the material for hot forging in a furnace to a heating temperature within a range of 1025 to 1150° C.; a die heating step of heating the upper die and the lower die to a heating temperature within a range of 950 to 1075° C.; and a transferring step of transferring the material for hot forging onto the lower die by a manipulator after the completion of the raw material heating step and the die heating step, wherein a value obtained by subtracting the heating temperature of the upper die and the lower die from the heating temperature of the material for hot forging is 75° C. or more.