Study of Deformation's Indexes of Rolls of Different Designs

Abstract

The elastic deformation of rolls influences the final thickness, thickness variations of strip and distribution of contact stresses. Prospective direction to address the problem of ArcelorMittal Temirtau JSC is the use of new roll materials. Calculating of elastic deformation of four-roll unit of continuous wide-strip hot rolling mill 1700 at ArcelorMittal Temirtau JSC for the actual profile of rolls of the "old", "modern" and "up-to-date" designs. Calculations have showed that during the use of rolls of "up-to-date" design AS1180HH in stands 6-8 bend deflection is reduced by 35-36.8%, and the design of rolls HVS80 in stands 9-12 by 54.5-56.1% that will allow the minimization of strip defect non-flatness at rolling of both narrow and wide strips.