The effect of welding line heat-affected-zone on the formability of tube hydroforming process

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Chiuhuang, Cheng-Kai^1 ; Hsu, Cheng-En^1 ; Lee, Ping-Kun^1

Product Application Research Section, China Steel Corporation, 1, Chung Kang Road, Kaohsiung, Taiwan^1

关键词: CO2 emissions;    Hydroforming process;    Lightweight design;    Thickness distributions;    Tube expansion;    Tube hydroforming;    Tube hydroforming process;    Tube thinning;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032010/pdf
DOI  :  10.1088/1742-6596/734/3/032010

来源: IOP

【 摘 要 】

Tube hydroforming has been used as a lightweight design approach to reduce CO2emission for the automotive industry. For the high strength steel tube, the strength and quality of the welding line is very important for a successful tube hydroforming process. This paper aims to investigate the effect of the welding line's strength and the width of the heat-affected zone on the tube thinning during the hydroforming process. The simulation results show that both factors play an important role on the thickness distribution during the tube expansion.