热成形钢防撞梁性能研究

摘要

Study on the performance of the crash beam making through hot stamping process and study on the influence factors of the performance. Use the quasi static three point bending test and the high speed drop test to compare of the static bearing capacity and dynamic energy absorption performance of the crash beam making through hot stamping process and the traditional cold stamping process. Use the range analysis method to analyze the significant level and the optimal data of various influence factors. The maximum deformation resistance of the crash beam making through hot stamping process is 2~3 times of the crash beam making through the traditional cold stamping process. And the effect of energy absorption is 1.5~2.5 times. The maximum influence of performance is deformation temperature in the hot stamping process,then heating temperature and holding time. The crash beam making through hot stamping process has a good performance. So it can ensure the safety of occupants,achieve weight loss,reduce fuel consumption and reduce carbon dioxide emissions. The deformation temperature is the most important factor need to be paid attenion to in the hot stamping process.%目的：研究热成形钢防撞梁的性能及其影响因素。方法使用准静态三点弯曲试验和高速落锤试验，对比了热成形钢防撞梁和传统冷冲压防撞梁的静态承载能力及动态抗冲击吸能性能，使用极差分析方法，分析了各个影响因素的显著水平及最优数据。结果热成形防撞梁的最大变形抗力是传统冷冲压防撞梁的2~3倍，吸能效果是其1.5~2.5倍。热成形工艺参数中，变形温度对热成形钢防撞梁性能的影响最大，其次是加热温度，再其次是保温时间。结论热成形钢防撞梁性能优异，在保证驾乘人员安全的同时，可以实现汽车减重、降低油耗、减少二氧化碳排放。为保证热成形钢防撞梁的性能，在热成形工艺过程中最需要注意的是变形温度。