高强度钢板冲压成形回弹控制技术

Springback control of high strength steel in Stamping

随着汽车技术的不断发展，高强度钢板在汽车上的使用量在不断增加。高强度钢板冷冲压成形中，回弹是不可避免的，钢板的强度越高回弹量越大。本文介绍了高强度钢板的冷冲压成形控制回弹的主要方法：工艺控制法和模具补偿法；同时对热冲压成形的原理，应用以及制约其发展的因素进行了综述。此外，介绍了有限元模拟回弹的步骤及其精度的影响因素，提高有限元模拟的精度可以大大的缩减模具制造周期。

With the development of auto technology, the number of the high strength steel used in cars are increased. The springback is inevitable in cold-stamping for high strength steel.The higher strength of the steel, the bigger in springback. The paper introduce the main methods of springback control are process control and die compensation method in cold-stamping for high strength steel.Summarying the principle and application of hot-stamping forming and the factor of restrict it development. In addition, the paper introduce the steps for springback FEM Simulation and some factors which influence the FEM simulation precision. Improving the accuracy of FEM simulation can be greatly reduce the time of mould manufacture.