Researching method for hydraulic forming technical parameters of titanium T-shaped pipe

Abstract

The invention relates to a researching method for hydraulic forming technical parameters of a titanium T-shaped pipe. The combination of a simulation model and a theory test is utilized to research the hydraulic forming of the T-shaped pipe; a 1/4 simulation model is adopted as the model; the researching time is shortened; the production efficiency is increased; a qualified T-shaped pipe is prepared in a hydraulic forming test by utilizing the technical parameters acquired from the research by researching the relation between inner-pressure loading and time (inner-pressure loading path) and the relation between punch feeding and time (punch loading path); the supplementary material of the forming area is effectively realized, so that the smaller wall-thickness thinning ratio and the relative uniform wall-thickness distribution are acquired; the forming limit of the T-shaped pipe is increased; the traditional research for the technical parameters by utilizing experiences and continuous tests is avoided; the cost is reduced.

Description

technical field [0001] The invention relates to the field of hydroforming of T-shaped tubes, in particular to a method for researching technological parameters of hydroforming of titanium T-shaped tubes. Background technique [0002] The titanium T-shaped tube is formed at room temperature through a three-way extrusion hydraulic press with a mold. The hydroforming process is as follows: figure 1 As shown, the tube blank 6 is put into the lower die 5, then the upper die 1 falls, and the dies are closed with a certain clamping force. After the mold clamping is completed, the left and right horizontal plungers of the hydraulic press are fed synchronously, so that the left punch 2 and the right punch 3 at the front end contact the end face of the tube blank 6, and then fill the inside of the tube blank 6 with liquid. After filling the liquid, use the left punch 2 and the right punch 3 seal the pipe end; then, the liquid staying in the tube blank 6 is pressurized by the supercha...

AI Technical Summary

Problems solved by technology

At present, in the actual titanium T-shaped tube forming process, the key process parameters of T-shaped tube hydroforming are determined mainly by the workers' years of manufacturing experience and continuous experimentation, which not only requires high cost, but also greatly wastes time. There is a lack of mature, perfect and sufficient theoretically supported process schemes, and there are few researches on the hydroforming process of titanium T-shaped tubes at home and abroad.

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