Study on Influence of Initial Rolling Temperature for Rolling Process Based on Numerical Simulation

摘要

Wire rolling is a typical large deformation process and its principle is very complex , which includes material non-linearity , geometry non-linearity and boundary non-linearity. It is difficult to obtain theory analytical results by trying to roll or physical experiment because they will induce many problems such as high cost, waste time and venture. With the rapid advancement of computing technology and numerical method , the finite element method is regarded as the best one , which can account for the large plastic deformation , thermo-mechankal coupling and complex boundary conditions of the rollers and the workpiece interactions in the rolling process. Under the different initial rolling temperature , the two-pass hot continuous rolling process of highspeed wire has been simulated accurately for the pre-finishing rolling section. The metal fluxion law and the deformation field have been obtained. Strain, temperature, rolling force and torque also have been simulated and discussed. The results of simulation are useful for practical manufacture and the optimization of process-parameters.