Mold core for investment casting.

摘要

A core mold to be assembled with a shell mold for use in an investment casting process which comprises a core matrix (10) consisting of an aggregate and an inorganic binder, a binder layer (12) impregnated from the surface of the core matrix (10), a coating layer (14) formed by coating a slurry over the binder layer (12) and a paraffin wax layer (16) covering the exterior periphery of the coating layer.