超高强度钢板热冲压及模内淬火工艺的发展现状

The development status of hot stamping and quenching of ultra high-strength steel

超高强度钢板热冲压技术是将板料热加工和淬火工艺相结合的一项较新的复杂成形技术。它使超高强度钢板具有较小的变形抗力、塑性好、成形极限高,而且成形零件的精度和强度较高。该技术生产的零件使汽车轻量化后仍能满足碰撞安全性能。介绍了超高强度钢板的种类及相应热冲压技术的关键技术,概述了热冲压技术实验研究及数值模拟研究的主要内容及其现状,并对热冲压技术存在的问题进行了评述,对未来发展的内容和重点研究方向进行了展望。

Hot stamping of ultra high-strength steels（UHSS） is a new and complex forming technology integrating metal hot forming and the quenching process.UHSS has many advantages due to hot stamping,such as low flow stress,good plasticity,and high forming limit.The shape accuracy and strength of parts formed using hot stamping are very high.So the strength of hot stamping parts satisfies the requirement of auto security,although the thickness of parts is reduced.In this paper,the types of UHSS,the key technologies of hot stamping were introduced.The main content and development status of hot stamping experimental study and numerical simulation study were summarized and reviewed,and the problems at present were also commented.Also,the content for further research and study direction were prospected.