Hot and cold strip rolling processes

Based on the peculiarities of strip rolling processes (long steady-state regime, two-scale character—meter/millimetre—due to local deformation), and on the practical requirement from industry, the models in use for the mechanical study of cold strip rolling are briefly reviewed: 1D slab method (SM), 2D/3D upper bound (UB), Finite Difference (FDM) and Finite Element (FEM) methods. Particular emphasis is put on steady state formulations for lower cost, on roll and stand deformation to study the essential problems of profile and flatness defects. Major open questions are evoked in conclusion.