Taking account of the elastic/plastic deformation of both rolled piece and roller in
cold continuous rolling process, the
deformation zone of rolled piece can be divided into three subzones, i.e. the entry elastic deformation, plastic deformation and exit elastic deformation. The rolling force in the plastic deformation and entry elastic deformation subzones is computed iteratively with
numerical integration. Then, calculate approximately the rolling force in the exit elastic deformation subzones in terms of a product of the area enclosed by the curve of unit pressure distribution and the width of rolled piece. At last, the model to calculate rolling force of No.5 mill is obtained via the sum of the two rolling forces calculated. Some simulations were done using different steel grades specifications of rolled strips of which the relevant data were recorded in situ. This force model is thus proved accurate and able to meet the precision requirements of precomputation for
cold continuous rolling process.