FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Prior to pouring of melt, special coating is applied at billet points to be rounded. Said coating consists of solution of magnesium oxide powder with mean particle size not exceeding 0.1 mm and industrial oil. Thickness of applied coating layer of the solution makes 0.05-0.1 mm of rounding radius.
EFFECT: rounding radius of 1 to 12 mm.
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