Roll-separating force and minimum thickness of cold-rolled strips

Abstract

This paper describes a theory for the prediction of roll-separating forces in cold rolling of strips. The theory is based on the concept that the process of plastic deformation in rolling may be approximated by that of plane-strain compression between parallel plates. Computed results based on this theory agree well with published experimental data on cold rolling of copper strips. A method for determining the coefficient of friction and the flow stress of materials for use in this theory is included. Also included is an analysis of the limiting conditions in cold rolling.