Patent ID: 8082975

Claim:
A casting mold manufacturing apparatus comprising: a forming die having a cavity; a resin-coated sand supply section for supplying a resin-coated sand into the cavity, the resin-coated sand being made of a refractory aggregate coated with a binder resin; a steam supply section for supplying steam into the cavity; and a steam discharge section for discharging the steam from the cavity, wherein at least a portion of the forming die is composed of a porous material having pores with an average diameter smaller than an average particle diameter of the resin-coated sand such that the steam is supplied into the cavity through the porous material, wherein the forming die includes: at least one first steam supply passage for directly supplying the steam into the cavity; and at least one second steam supply passage for indirectly supplying the steam into the cavity through the porous material.