FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Dye comprises carrier fluid, refractory powder and reducing agent. Said carrier fluid represents water or alcohol containing 1-10 carbon atoms, or mix of water and volatile organic component with boiling point below 130°C. Styrene copolymer is used as said reducing agent.
EFFECT: decreased gas flaws in castings.
16 cl, 2 tbl, 2 ex
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