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To address the issues of low efficiency, uneven wall thickness and low film adhesion rate in traditional internal high-pressure forming(IHPF) of profiled tubes, a process parameter optimization method based on the entropy weight comprehensive evaluation method was proposed for IHPF of complex-section intake profiled tubes. First, a finite element model for IHPF was established for the profiled tubes with axis length of 812. 86 mm, diameter of Φ170 mm at the left-end section and perimeter of 516. 2 mm at the right-end section.Then, an orthogonal experiment was conducted using a five-factors and three-levels scheme to analyze the influence of various process parameters on the forming quality of the intake profiled tubes. Finally, the three quality indicators were transformed into a single optimization objective-comprehensive score via the comprehensive evaluation method. Through range analysis of the comprehensive scores, the optimized IHPF process parameters for the profiled tube were obtained. The optimal parameter combination is as follows: the internal pressure follows a initially rapid and then slow loading path; the axial feed follows a initially slow and then rapid loading path; the friction factor in feeding zone is 0. 06; the friction factor in transition zone is 0. 01; and the friction factor in forming zone is 0. 06. The reliability of the process optimization results was finally verified through IHPF experiments.
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Basic Information:
China Classification Code:TG39
Citation Information:
[1]DONG You-gen,XU Xue-feng,CHEN Yue-hui ,et al.Simulation and process optimization of internal high-pressure forming for profiled tubes based on entropy weight comprehensive evaluation method[J].Journal of Plasticity Engineering().
Fund Information:
国家自然科学基金资助项目(52265052; 52575395); 江西省自然科学基金资助项目(20224BAB214050); 江西省重点研发计划项目(20243BBG71002)
2026-03-26
2026-03-26
2026-03-26