RESIN-COATED SAND FOR USE IN CAST STEEL, CASTING MOLD MADE OF THE SAND, STEEL CASTING CASTED USING THE CASTING MOLD

摘要

A resin-coated san for use in cast steel, comprising a casting sand, a phenolic resin in an amount of 2.5 to 5.0% by weight relative to the amount of the casting sand, potassium nitrate and vinsole. A steel casting manufactured by the casting on a casting mold which is molded using the resin-coated sand can effectively prevent the occurrence of hot-cracking or bath wrinkle even in a thin and large-sized article.