Mill for producing strip and use thereof

Abstract

A mill for producing a continuous strip comprising a pair of work rollers having a constant diameter over the work length, at least one local back-up roller having two rotatable contact surface sections, each provided to have a back-up effect on a corresponding work roller in a direct manner or an indirect manner. Each contact surface section is axially movable relative to the corresponding work roller. An overall back-up roller having a constant diameter over the work length may be provided between the local back-up roller and the work roller. Means for bending each work roller and/or each intermediate roller at the opposite neck portions thereof with a corresponding pair of the contact surface sections acting as fulcrums thereagainst. The mill is operated, while an axial position of each contact surface section is adjusted, and a hydraulic fluid supplied into each roller bending means forming a hydraulic cylinder is controlled in response to a profile of the strip.