模具间隙对防撞梁热冲压成形的影响

Influence of Die Clearance on Hot Stamping Forming of Anticollision Beam

使用USIBOR1500高强度钢板,通过高温拉伸试验获得该材料在高温下的流动应力曲线,使用DYNAFORM仿真软件对USIBOR 1500高强钢的热冲压过程进行了模拟,分析了模具间隙为0.9 t^1.1 t对汽车防撞梁热冲压成形的影响,仿真结果表明随着模具间隙增大,板料减薄量越小,但越容易起皱。

By using high-strength low-alloy steel 1500,the flow stress curve of the material at high temperature was obtained by tensile test at high temperature,and the hot stamping process of USIBOR 1500 high strength steel was simulated by DYNAFORM simulation software,and the influence of die clearance from 0.9 t to 1.1 t on hot stamping forming of automobile anti-collision beam is analyzed.The simulation results show that with the increase of die clearance,the decrease of sheet metal thickness is smaller,and the minimum temperature of sheet metal is higher at the end of forming.