Abstract: A process for producing a urethane die. A heat-resistant epoxy adhesive is applied to the inner surface of a recess provided in the body of a die. A urethane primer is applied to the adhesive while the adhesive is still in a semi-hardened state. A punch is inserted into the recess to form a space between the recess and the punch and a urethane resin is injected into the space to form a resin layer on the recess having a shape corresponding to the outer surface of the punch. A reinforcing fibrous material may be incorporated into the resin layer by applying a urethane resin having a lubricant incorporated therein to the surface of the punch and adhering a fibrous material impregnated with the urethane resin to the coated surface of the punch prior to inserting the punch into the recess.

Abstract: A cast-in member and a heating member are set in a mold with the cast-in member being in the vicinity of the heating member. Molten metal is poured through an ignition runner into contact with the heating member to ignite the latter and produce heat. The cast-in member is heated with the heat from the heating member. Thereafter, molten metal is poured through a runner into a cavity in the mold to cast the metal around the cast-in member.