STEEL SHEET ROLLING METHOD Russian patent published in 2000 - IPC

FIELD: metallurgy, possibly three-roll finish rolling stands. SUBSTANCE: method comprises steps of rolling sheet blank between upper and lower rolls skewed in vertical plane for providing counterbending of strip at each pass; simultaneously profiling all three rolls; using non-driven mean roll and driven upper and lower rolls. Rolls are profiled in such a way that they have cone portion in mean part of roll and cylindrical portions along edges of rolled sheet. Conicity of mean roll in its mean portion is doubled and directed opposite relative to conicity of upper and lower rolls. Upper and lower rolls have respectively single conicity. EFFECT: reduced cross thickness difference, enhanced quality of sheet, increased efficiency of rolling. 1 dwg