Transactions of Materials and Heat Treatment

Title：Analysis on push-bending feasibility of aluminum tube with double continuous bending radius

Authors： Jia Zhen Zheng Yanbing Han Zhiren Liu Baoming Gao Tiejun

Unit： Shenyang Aerospace University

KeyWords： double continuous bending radius push-bending aluminum tube metal flow

ClassificationCode：TG335.19

year,vol(issue):pagenumber：2015,40(8):59-63

Abstract：

For the issues of mechanical properties decrease of the weld tube with double continuous bending radius, the push-bending process based on the characteristics of restraint forming by push-bending die was proposed, and its feasibility was analyzed. The die cavity of push-bending with double continuous bending radius was designed according to the experience of push-bending the single bending radius tube. The finite element model (FEM) was established by Forge 3D software, and three working conditions that with the inner mandrel, without the inner mandrel and chamfered end were simulated respectively, and the simulation results were analyzed. The results show that the inner mandrel can support the tube and the chamfered end can guide metal flow, either of which is indispensable. The push-bending test under the good bending conditions is carried out. The cross section distortion of the tube with double continuous bending radius by push-bending can be suppressed effectively, and the forming method is feasible.

Funds：

国家自然科学基金资助项目(51205260)

贾震（1980-），男，博士，讲师

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