FIELD: technological processes.
SUBSTANCE: in the process of double strand breakdown forming in the form of joined square profiles, longitudinal local bulges that have form of segment of certain width and radius in transverse section are made on their facets, i.e. they add regulated convexity to facets. After longitudinal separation billets with regulated convex facets are rolled in single-radius oval passes with provision of full contact of billet facets and rolls pass.
EFFECT: reduction of rolls wear due to even squeezing of separated square profiles in leader single radius oval passes.
4 dwg, 2 ex
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