FIELD: rolling, manufacture of cold roll-formed sections in multistand mill. SUBSTANCE: steel strip billet is cut and its elements are bent in sequence during passes. Cutting is carried out in two stages. At first stage midpart of strip is cut in symmetry relative to axis before first forming pass. Then rupture of undercut strip is performed by drawing efforts during forming. Length of line of cut is determined by given formula. EFFECT: expanded technological capabilities of process of manufacture of roll-formed sections.
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Authors
Dates
1998-03-27—Published
1997-03-19—Filed