锻压技术

钛T型管液压成形的工艺参数研究

英文标题：Research on technological parameters of hydroforming for titanium T-shaped tube

作者：朱明清吉卫喜张旭贾继勇

关键词：钛 T型管液压成形有限元模拟

分类号：

出版年,卷(期):页码：2015,40(1):56-60

摘要：

采用Dynaform软件对Φ219 mm×Φ219 mm×5 mm钛T型管的液压成形工艺进行数值模拟研究，以有效支管高度、最大减薄率和最大增厚率为优化指标，对内压加载路径、加压持续时间、左右及中间冲头速度等多种工艺参数组合方案进行优选计算，获得最优方案，并根据最优方案中的工艺参数进行实际的液压成形试验。研究表明：模拟试验中，采用方案3成形效果最好，有效支管高度达到68.41 mm，最大减薄率和增厚率分别为27.38%和54.34%，满足T型管尺寸和壁厚分布要求。与模拟值相比，成形试验得到的钛T型管零件在有效支管高度、最大减薄率和最大增厚率上的误差均在5.1%以内。

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%.

基金项目：

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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