The forming methods,conditions and process of the new bulge technology for the multi-center tube joint under reversed compressive force with polyuret hane rubber are analysed.

Against the sand transportation system used in the Yellow River sand-dredging & bank-strengthening project mainly optimizing the structure of multiple-pass junction at the outlet of a sand-dredging pumping platform was analyzed to improve the hydraulic performance of the system.

And then it presents the results of the 2-D simulation of the whole forging process of a T-joint part by using the elastoplastic FEM program developed under ANSYS 5.