锻压技术

超高强钢管件热气胀成形特性与A柱样件开发

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

作者：程超1 2 韩非1 2 石磊1 2

单位：1.宝山钢铁股份有限公司中央研究院 2.汽车用钢开发与应用技术国家重点实验室(宝钢)

分类号：TG394

出版年,卷(期):页码：2023,48(5):95-102

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.

基金项目：

作者简介：程超（1989-），男，硕士，工程师,E-mail：chengchao198@baosteel.com

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