CASTING MATERIAL FOR PRODUCING CASTING MOLDS FOR CASTING HIGH-MELTING POINT MATERIALS

摘要

The present invention relates to the casting moulds of production casting to cast high-melting-point substances. The cast material includes crushing part comprising magnesia and aluminium oxide and liquid component. The powder component additionally comprises the fluoride or alkaline earth fluoride of calcium aluminate and an alkali metal, and liquid component contains polyelectrolyte and alkalinity, and the alkaline component adjusts the liquid component of pH between 10 and 14. Powder mixes flowable cover note insurance slip with liquid component and generates, and is used for, once dry, solidification, to generate hollow mold and be sintered.