TRÓJWYMIAROWA ANALIZA WALCOWANIA ASYMETRYCZNEGO Z PËASKIM ORAZ UKOëNYM WEJëCIEM MATERIAËU

The results of three-dimensional simulation of asymmetric rolling, using Finite Elements Method, are presented. The example case of low carbon steel is considered. The rolling asymmetry, considered in the present work, results from dierent angular velocities of two identical working rolls. The eects of asymmetry on stress and strain distributions, material bending and variations of normal force and torque exerted by rolls are calculated and discussed. A special emphasis is done on the influence of inclined entry of a rolled material, which can appear in sequential rolling. Such the entry can partly compensate the material bending during. The results of the present simulations show that optimum parameters can be found in order to minimize the eect of sheet curvature and to reduce the applied torque and normal rolling force. The predicted internal stress distributions were applied next in the crystallographic deformation model; the predicted textures of symmetric and asymmetric rolling are in good agreement with experimental results.