COLD ROLLING MILL WORKING ROLL EXPLOITATION METHOD Russian patent published in 2007 - IPC B21B28/02 

FIELD: operation processes of rolls of continuous, reversing and skin pass cold rolling mills.

SUBSTANCE: method comprises steps of reducing strip in successive row of four-high stands; acting upon active profile of working rolls due to hydraulic bending of their axes and correcting as backup rolls are worn initial profile of working rolls at their next exchange. Enhanced accuracy of selecting machine profiling of working rolls of four-high stand is achieved due to changing value of initial convexity of working rolls in proportion to metal volume rolled in stand from beginning of backup rolls mounting while correcting profile against actions of bending and counter-bending of rolls at each mounting of working rolls individually depending upon relation of width of rolled strip to active length of barrel of backup roll. Change value of initial profile is normalized by given mathematical expression.

EFFECT: improved modes of working rolls operation.

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