FIELD: metallurgy.
SUBSTANCE: method includes introduction of modifier and alloying additions into pre-expanded polystyrene granules, and sintering of gasifiable patterns therefrom. Modifiers and alloying additions in the form of micro-and nano-particles are ground and embedded inside pre-expanded polystyrene foam beads by acting on these particles by shock wave of electric discharge.
EFFECT: more uniform distribution of modifiers and alloying additions in the gasifiable cast pattern is provided; and improved quality of inoculation and alloying of casting metal as a consequence.
4 cl, 2 dwg, 4 ex
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