Transactions of Materials and Heat Treatment

Title：Research on failure control of hydroforming for 321 stainless steel V-shaped components

Authors： LANG Li-hui1 XU Nuo1 WANG Yong-ming1 XU Ying-qiang2 YANG Zhi-heng2

Unit： 1.School of Mechanical Engineering and Automation Beihang University Beijing 100191 China 2.Shanghai Aircraft Manufacturing Corporation Ltd. Shanghai 200436 China

KeyWords： 321 stainless steel V\|shaped components hydroforming numerical simulation pre-bulge

ClassificationCode：TG394

year,vol(issue):pagenumber：2012,37(5):51-55

Abstract：

Hydroforming is an effective method to solve the problem of thin-walled parts forming. Aiming at the multi-stage problem and process redundancy for common deep drawing of 321 stainless steel V-shaped components, hydroforming with pre-bulging proposal was designed by analyzing defects during V-shaped components forming. Combined with numerical simulation, punch sidewall fracture and flange wrinkle during V-shaped component forming were studied, while cavity pressure loading path, blankholder gap, pre-bulge pressure and pre-bulge height were optimized. The results show that a helpful friction can be generated in the optimized parameters condition, stress state can be improved, and sidewall fracture and flange wrinkle can be avoided. Forming limit and the uniformity of thickness can be enhanced.

Funds：

商飞基金资助项目（829-C919-01-1）

Reference：

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