SURFACE COATING DISPERSION COMPOSITION OF CASTING DIE IN STEEL AND ITS PREPARATION AND SURFACE TREATMENT METHOD OF CASTING DIE IN STEEL

摘要

A dispersion composition and a method for coating the surface of steel casting dies for molten metals are described. The dispersion composition comprises boron nitride powder dispersed in a peroxide- modified aqueous dispersion of a water-dispersible film-forming polymer. The coating composition provides thermal insulation to the mold surface, thereby minimizing premature solidification of the cast metal.