FIELD: foundry. SUBSTANCE: coating applied to the inner surface of the mould as refractory coating has in addition synthetic corundum. As a binder it also has ethylsilicate at the following correlation of ingredients, wt.-% : ethylsilicate 46-55, synthetic corundum 23-27, boron nitride- the rest. The thermal treatment of the mould is carried out before pouring at 450-500 C. EFFECT: improved fatigue properties of castings of high-melting and chemically active metals and alloys obtained by pouring into ceramic moulds. 3 tbl
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