超高强钢管件热气胀成形特性与A柱样件开发  

Hot metal gas forming characteristics of ultra-high strength steel tube and development of A-pillar specimens

作　　者：程超 韩非[1,2] 石磊 Cheng Chao;Han Fei;Shi Lei(Research Institute(R&D Center),Baoshan Iron&Steel Co.,Ltd.,Shanghai 201999,China;State Key Laboratory of Development and Application Technology of Automotive Steels(Baosteel),Shanghai 201999,China)

机构地区：[1]宝山钢铁股份有限公司中央研究院,上海201999 [2]汽车用钢开发与应用技术国家重点实验室(宝钢),上海201999

出　　处：《锻压技术》2023年第5期95-102,共8页Forging & Stamping Technology

摘　　要：1.5 GPa超高强钢结合新型成形工艺,可以获得轻量化及性能优异的零部件。以B1500HS超高强钢为对象,研究了其热气胀成形特性,并采用实验手段获得了该超高强钢的热态拉伸性能及最大胀形率,为该材料在零件设计和开发中的应用提供了指导和依据。进一步以典型A柱为对象,完成了冲压件优化为管件的零件设计,并基于B1500HS超高强钢的成形特性,完成了热气胀成形工艺设计、仿真分析和优化,并加工获得了满足强度要求、轻量化效果超过10%的合格A柱样件。研究成果为汽车行业采用1.5 GPa超高强钢热气胀成形零件提供了可行性示范。1.5 GPa ultra-high strength steel combined with a new forming process can obtain lightweight and high-performance parts.Therefore,for B1500HS ultra-high strength steel,the characteristics of hot metal gas forming were studied,and the hot tensile properties and maximum bulging rate of this ultra-high strength steel were obtained by experimental means,providing guidance and basis for the application in design and development of part.Furthermore,for a typical A-pillar,the part design for the stamping part optimized as a tube was completed,and based on the forming characteristics of B1500HS ultra-high strength steel,the hot metal gas forming process design,simulation analysis and optimization were completed.Finally,the qualified A-pillar samples that met the strength requirements and had a lightweight effect of more than 10%were processed.Thus,the research results provide a feasible demonstration for the automotive industry to adopt hot metal gas formed parts for 1.5 GPa ultra-high strength steel.

关 键 词：B1500HS超高强钢 热气胀成形 轻量化 A柱样件 最大胀形率 

分 类 号：TG394[金属学及工艺—金属压力加工]