MOULDING MIXTURE FOR STEEL CASTING Russian patent published in 1995 - IPC

FIELD: foundry engineering. SUBSTANCE: by-product of aluminosilicate catalyzer of petroleum cracking manufacture is used in the mixture under the following components proportion, mass/per cent: quartz sand is of 82,0 85,0; by-product of aluminosilicate catalyzer of petroleum cracking manufacture is of 11,0 13,0. Caustic coda solution of 1,1-1,3 g/cm³ thickness is of 1,6 2,5; refractory clay is of 2,0 3,0. Utilization of the above mixture makes it possible to manufacture steel cast with enhanced degree of surface finish and lack of both sticking and defects. Moulding mixture is easily knocked out and scatters without lumps. Besides the mixture can substitute deficient liquid glass. EFFECT: improved quality. 3 cl, 1 tbl