FIELD: casting processes and equipment, possibly manufacture of castings of refractory, alloyed and stainless alloys.
SUBSTANCE: method comprises steps of applying layer by layer onto investment pattern suspension on base of refractory material with ethyl silicate layer adding to suspension graphite in quantity 2 - 4% of mass refractory material; at molding prepared mold in flask with quartz sand adding to it carburizing agent in quantity 4 - 6% of mass of quartz sand.
EFFECT: improved quality of outer layer of ready cast pieces, lowered number of rejected castings due to making high-strength and geometrically regular molds.
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