FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Modifiers or alloying agents in the form of paint are applied on pre-foamed foam polystyrene granules. Unpainted pre-foamed foam polystyrene granules are added to colored foam polystyrene granules in amount of 2 to 94 vol. %. Granules are dried, filled in injection mould for final foaming and producing casting.
EFFECT: higher quality of casting, its structure and improved properties.
2 cl, 1 ex
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