Numerical Simulation on Hot Forming and Quenching Process of Stamping Part
With the application of ultra high strength steel sheet in automobile manufacturing field,the hot forming method of high strength stamping sheet obtained by high temperature and rapid cooling is extensively researched.The thermo-mechanical-phase transformation coupling forming process was studied,and the strain constitutive model and yield stress model were represented by a mixture law.On the basis of this,taking U-shape constant section part as research subject,the hot forming and the quenching process after forming for 22MnB5 metal sheet were simulated by the thermo-mechanical-transformation coupled FEM.The final part shape and hardness after air-cooling,water-cooling without dies and cooling with dies were analyzed respectively.