FOUNDRY MOLD Russian patent published in 1997 - IPC

FIELD: foundry. SUBSTANCE: the offered foundry mold has molding box whose internal walls are expanding towards the surface of parting line. Molding sand is composed of mixture capable of relaxation of its initial looseness in time after pressing and has the following quantities of components, mas. %: iron dust from shot-blasters 5-85; liquid component in form of spent pickling solution 10-40; the balance, dust of furnace gases of electric steel melting furnaces. EFFECT: higher efficiency. 2 cl, 2 dwg, 1 tbl