Theoretical analysis of the asymmetric rolling of sheets on leader and finishing stands

A theoretical analysis of the asymmetric rolling in The Plates Hot Rolling Mill of Tadeusz Sendzimir Steel Work in Cracow has been performed with finite element software Elroll with an assumed rigid–plastic model of the deformed metal. The theoretical analysis of the asymmetric rolling process, which was performed based on Elroll computer software, required the definition of the mechanical properties of the materials examined. Before making the selection of steel grades for analysis, data deriving from the system of controlling the finishing stand group at the Sendzimir Steel Works of Cracow were reviewed and steel grades defined in the system were analysed, the latter being grouped into sets, each with an assigned code of mechanical properties. Each of these groups is characterised by different coefficients of a general equation that defines the dependence of yield stress on temperature, strain rate, total rolling reduction, and the rolling stand number. On the base of the obtained results of the computer simulation the technology of the asymmetric rolling of plates in a continuous rolling mill has been elaborated. Within this framework results of the computer simulation are presented.