In this paper, the forming proccess of Tee tube hydro forming (THF) were studied in detail. Finite element model of THF was established. The influence of processing parameters to the axial compressive bulging was analyzed.

• 本文详细研究了多通管(以三通管为例)液压胀形的成形过程，建立了多通管液压胀形的有限元模型，分析了轴向压缩胀形过程中各工艺参数对成形过程的影响，研究了三通管复合胀形三个工艺力的加载路径，分析比较了三通管固体介质胀形与液压胀形，最后，研究了三通管液压胀形控制模式。