Method for manufacturing hot-forged member

Abstract

Provided is a method for manufacturing a hot-forged member, the method enabling efficient hot forging while preventing defects such as cracks even when a poor workability alloy is used as a material to be hot forged. A method for manufacturing a hot-forged member, comprising: a heating step of heating an unheated material for hot forging in a furnace to a hot forging temperature; a heat-resistant insulation material bonding step of bonding a heat-resistant insulation material to at least a part of a surface of a material for forging removed from the furnace to obtain a material to be hot forged; and a hot forging step of compression-forming a part or all of the material to be hot forged into a predetermined shape using any of a die, an anvil, and a tool, the method further comprising a glass lubricant coating step of coating a glass lubricant on at least a portion of a surface of the unheated material to which the heat-resistant insulation material is to be bonded, wherein the glass lubricant has a viscosity of 102 to 107 Pa·s in the heat-resistant insulation material bonding step.

Dependencies are inferred from the claim text.