STRIP STEEL LENGTHWISE UNCOILING METHOD Russian patent published in 2007 - IPC B23D19/04 

FIELD: finish working of rolled sheets, possibly lengthwise uncoiling coiled strips for producing narrow strips.

SUBSTANCE: method comprises steps of drawing metal through disc shears at preliminarily notching it; notching strip in shears by depth A due to shifting portions of strip adjacent along strip width in vertical plane in mutually opposite directions; then additionally passing strip through pair of horizontal cylindrical rollers while shifting each of said portions in the same plane but in direction opposite to shifting direction of said portion drawn through shears in order to produce narrow strips. Depth value where h - strip thickness, mm; σ_y -limit yield of steel, Mpa.

EFFECT: improved quality of ready strip blank for shaping.

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