Смесь дл изготовлени литейных форм и стержней

摘要

FIELD: foundry, namely manufacture of casting molds, cores and members of gating system. SUBSTANCE: molding sand includes (mass%): liquid glass, 5 - 14; waste materials of ceramic article production containing clay, 7 - 26; quartz sand - the balance. Waste materials of ceramic article production allow to enhance strength properties of molding sand. EFFECT: enlarged assortment of molding sands. 2 tbl