COMPOSITION OF BURNING-PROOF COATING FOR CASTING MOLDS AND CORES Russian patent published in 2001 - IPC

FIELD: foundry, namely burning-proof coatings for casting molds and cores. SUBSTANCE: composition contains (mass%): refuse of gas scrubbing of metallurgical production - (30-34); refuse of silicon carbide production - (37-40); orgaic binder - (4-5); sodium carboxymethyl cellulose (1-2); water - the balance Heat of hot steel provides interaction of carbon and silicon carbide cont ained in waste products of silicon carbide production and being refractory filler with oxides of ferrum and manganese contained in refuse of gas scrubbing of metallurgical production. Such composition provides increased hardness of surface layer of casting, lowered thickness of its coating. EFFECT: guaranteed prevention of burning-on of surface of castings. 2 cl, 2 tbl, 2 ex