The Distribution of Contact Pressures in the Rolling of Metals

Abstract

A comparison is made between the experimentally determined contact pressure distributions obtained on square bars and flat strips. The former showed double peaks in the pressure, one near entry and the other near the roll center line. A pressure peak is obtained near the center line only for strip-rolling. Two independent analyses were made. One allowed the double peak for the square bars to be predicted with fair accuracy from stress-strain data. The second, based on the local elastic deformation of the rolls, also showed the transition in pressure distributions from billet to strip-rolling.