The Short Stroke Control(SSC)is an effective way to improve the shape of slab head and tail and reduce metal loss during the process of roughing mill to adjust the width of slab. While the present broken line SSC model,which is often used,needs to be improved. Based on the processing parameters of some hot strip roughing mill group,a coupling thermal-mechanical numerical simulation model for vertical and horizontal rolling was established using rigidplastic finite element method,by which the unsteady deform...