Metal pressure in cold rolling in the elastic aftereffect zone of porous strip

Abstract

The metal pressure at the end of the forward slip zone and the beginning of the elastic aftereffect zone of a porous strip being rolled is given by the expression p=ξβσt. This pressure differs from that normally employed in theoretical calculations by the coefficient ξ, which is greater than unity and grows appreciably with increasing strip density and Poisson's ratio of the corresponding nonporous material.