河北冶金

调研了超高强钢汽车板成形性能检测与评价方法、技术发展现状，指出了未来成形技术的发展方向。超高强钢成形性能检测与评估方法取得一定进展，但仍需进一步改进和完善，尤其板料和零件残余应力的检测与评估，不同加载路径下成形极限、拉压性能(包申格效应)、边缘扩孔性能、纯弯曲性能检测与评估等方面仍需加大研究力度。超高强钢成形质量控制难主要体现在材料、装备与工艺三因素相互叠加影响，材料成形性能偏低缩窄了成形工艺窗口，现有成形装备、自动化控制与成形质量稳定性控制，成形工艺、模具设计与材料回弹与断裂失效控制的匹配性方面还存在一定差距。超高强钢冷成形未来发展方向包括新型冷冲压、辊弯成形、一体化成形技术等，热成形需要突破镀层热成形专利技术等。

The detection and evaluation methods of forming properties of ultra-high strength steel sheet for automobile are investigated,and the development status of the technology is pointed out. The measurement and evaluation methods for the formability of ultra-high strength steel have made some progress,but they still need to be further improved and perfected,especially for the detection and evaluation of residual stress in sheet metal and parts,more research should be done on forming limit,draw ing and pressing performance( Bauschinger effect),edge reaming performance and pure bending performance under different loading paths. The forming quality control of ultra-high strength steel is mainly embodied in the superposition of material,equipment and process,w hich narrow s the forming process w indow due to the low formability of material. There are still some gaps in the existing forming equipment,automatic control and stability control of forming quality,the matching of forming process,die design and material rebound and fracture failure control. The future development of ultra-high strength steel cold forming includes new cold stamping,roll forming,integrated forming technology,and so on.