FIELD: foundry. SUBSTANCE: blend contains 28-44% graphite, 31-40% boric acid, and aluminum powder - the balance. Presence of boric acid enables increasing ecological safety of mold due to low-class danger of constituents and substances formed upon thermal destruction. Presence of aluminum powder, whose particles are covered by oxide film and on firing reinforce weakly joined with each other molecular layers of graphite, provide necessary strength. EFFECT: improved working characteristics of mold. 2 tbl
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