Transactions of Materials and Heat Treatment

Title：Optimization on two-way extrusion precision forming process for aluminum alloy four-way pipe based on numerical simulation

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ClassificationCode：铝合金四通管；双向挤压；坯料温度；挤压速度；模具预

year,vol(issue):pagenumber：2024,49(1):89-97

Abstract：

Aiming at the shortcomings of the traditional forming process for four-way pipe, a two-way extrusion precision forming process of aluminum alloy four-way pipe was proposed. Firstly, according to the principle of the two-way extrusion precision forming process of aluminum alloy four-way pipe, the three-dimensional models of billet and forming tools were established by 3D software SolidWorks, and the finite element model of the numerical simulation was established by Deform-3D to simulate and analyze preliminaryly. Then, according to the literature research and preliminary simulation results, billet temperature, extrusion speed and mold pre-heating temperature were taken as the main factors affecting the forming quality of parts, and the two-way extrusion precision forming process of aluminum alloy four-way pipe was test designed by the orthogonal experiment method. Furthermore, taking the billet temperature, extrusion speed and mold preheating temperature as the test factors, and taking the maximum equivalent stress and the maximum punch load as the optimization objectives, the response surface approximation model was established by software Isight, and the optimal process parameters combination of the two-way extrusion precision forming process of aluminum alloy four-way pipe was obtained as the billet temperature of 374 ℃, the extrusion speed of 5 mm·s-1, and the mold pre-heating temperature of 281 ℃. Finally, the optimized parameters combination was verified by the simulation, and it was found that the optimized four-way pipe parts had no forming defects, and the error between the maximum equivalent stress and the maximum punch load and the multi-objective optimization results was less than 3%. The results show that the proposed two-way extrusion precision forming process of four-way pipe is feasible and effectively improve the production efficiency and material utilization of the four-way pipe.

Funds：

重庆市教委科学技术研究项目（KJQN202301229，KJQN202301242）

作者简介：蔡荣飞(1999-)，男，硕士研究生 E-mail：1270173950@qq.com 通信作者：王辉(1989-)，男，博士，副教授 E-mail：wanghui@sanxiau.edu.cn

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