Rolling flat material and strip

摘要

Rolling of flat material and strip in a roll stand with work and support rolls, as well as with vertical cylinder piston units for roll balancing and flexure, comprises: (a) with the roll gap open, these units press the work rolls against the support rolls for positive and negative flexure; (b) the negative flexure force is chosen so that a required correction of the roll gap contour is achieved under load; (c) the positive bending and balancing force is increased accordingly; (d) as the material to be rolled enters, the roll gap is further opened, and the required balancing force is automatically provided by the rolling force; and (e) as the rolled material leaves, the roll gap is reduced and the cylinder-piston units for positive flexure automatically provide the balancing force.