BILLET MANUFACTURE METHOD Russian patent published in 1997 - IPC

FIELD: manufacture of rolled products. SUBSTANCE: method involves cutting material into measured lengths and feeding to pressing zone; squeezing end portions in several stages to form strips and wall, with supporting force being applied to strips; rolling billets to obtain ready product. At the first stage, end portion of wall is preliminarily squeezed for value of Δ H determined by expression: Δ H > 2H(s) [B - B(e) + Δ] /B(st), where B is nominal width of billet strip; H(s) is strip thickness; B(e) is width of strip end; B(st) is width of striker; Δ is strip width binding value during wall squeezing. At the second stage, strips with width at least equal to B + Δ are formed. EFFECT: increased efficiency and improved quality of product. 4 dwg