FIELD: metallurgy.
SUBSTANCE: method includes the final foamed polystyrene alloying additives application on the grains. The glue is applied on the grains surface, it does not produce the harmful emissions at the casting temperature, and then the powdery alloying composition is applied with continuous mixing of the grains. The alloying composition may contain the powder of one element or several. If necessary the alloying composition is applied on the foamed polystyrene grains several times.
EFFECT: gas contamination reduction of the model material production and casting at alloying substances economical use and production of high-quality alloyed products.
4 cl, 6 dwg, 3 ex
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