Transactions of Materials and Heat Treatment

Title：Research on technological parameters of hydroforming for titanium T-shaped tube

Authors： Zhu Mingqing Ji Weixi Zhang Xu Jia Jiyong

Unit： Jiangnan University Wuxi Xinfeng Pipe-Fittings Corp.

KeyWords： titanium T-shaped tube hydroforming FEM simulation

ClassificationCode：

year,vol(issue):pagenumber：2015,40(1):56-60

Abstract：

The hydroforming process of Φ219 mm×Φ219 mm×5 mm titanium T-shaped tube was studied by Dynaform. With the effective height of branch pipe, the biggest thinning ratio and the biggest thickening rate as optimization criterion, an optimal scheme was obtained by calculating various combinations of technological parameters including loading paths of the internal pressure, pressure duration, velocities on left, right and middle of the punch etc. Finally a practical hydroforming experiment was conducted according to the technological parameters of the optimal scheme. The research indicates that the third scheme has the best forming effect, and the effective height of branch pipe is 68.41mm, with the biggest thinning ratio and thickening rate are 27.38% and 54.34% respectively. The requirements on the size and wall thickness distribution of T-shape tube are met. Compared with the simulation results, the errors of effective height of branch pipe, the biggest thinning ratio and the biggest thickening rate from the experiment are all less than 5.1%.

Funds：

江苏省“六大人才高峰”资助项目(2010－JXQC-089)

朱明清（1990-），男，硕士研究生

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