MANUFACTURING METHOD OF CASTING MOLD

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of a mold having an improved high-temperature strength.SOLUTION: A manufacturing method of a mold includes: a formed body forming process in which slurry containing binder 63 is applied onto a casting wax pattern 21, and non-oxide type ceramic material 61 is attached as stucco material onto the surface of the slurry to obtain a formed body; and a heat treatment process in which the formed body is heat-treated in an oxygen-containing environment to obtain a mold 1. In the heat treatment process, heating is performed up to such a temperature that the non-oxide type ceramic material 61 produces a liquid phase on the surface and forms an adhesive layer 51 with the binder 63.SELECTED DRAWING: Figure 2