Computer Simulation of the Stress State Parameters of Steel Strips during Symmetric and Asymmetric Cold Strip Rolling

Abstract

The processes of symmetric and asymmetric cold rolling of a steel strip are subjected to computer simulation in the DEFORM Finite Element Method (FEM) software. The rolling of strips from a thickness of 6 to 3.7 mm and from 2 to 1.4 mm is investigated. The simulation is carried out at the same roll diameter (600 mm) and an asymmetry of 0.83% (upper roll diameter is 595 mm; lower, 600 mm), 1.67% (upper roll diameter is 590 mm; lower, 600 mm), and 5% (upper roll diameter is 570 mm; lower, 600 mm). The influence of a change in the asymmetry of roll diameters on the strain effective across the rolled strip thickness and on the average value of the normalized Cockcroft–Latham damage criterion is studied.