Plate shape research by continuous FEM simulation of multi-pass plate hot rolling

To fully consider the infect of all the factors on plate shape,a 3-D elastic 'hollow-roll' model and the parametric generation module of FEM model is establelished,which makes it possible to simulate a multi-pass rolling process continuously.An input data generating system is also set up which involves a mesh refinement module and parameter transfer module.Through this system,the calculation results from the former pass can be directly transferred to the next pass input file as initial conditions and the refined mesh can be directly added into the input file too.This enables the simulation for multi-pass rolling going continuously.The model considers the factors influencing plate profile,such as roll-bending force,initial crown,thermal crown and heat transfer during rolling and inter-pass cooling.A seven-pass industrial hot rolling process was continuously simulated and the results show that the rolling force,temperature and plate profile agree well with the measured ones respectively.