Transactions of Materials and Heat Treatment

Title：Finite element analysis and experiment on press bending for 6005A aluminium alloy thin-walled profile

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ClassificationCode：TG146. 2

year,vol(issue):pagenumber：2023,48(1):128-135

Abstract：

For the problem that the thin-walled profiles were easy to occur the section distortion defects in the press bending process, the influences of 6005A aluminium alloy thin-walled (the thickness of 2. 5 mm) profile structure, filling material and filling method on the structural distortion of profile after press bending were explored by finite element simulation software Deform-3D and press bending equipment. The results show that except for PU, the filling material of PA6, PP and PVC all have high yield strength (≥21 MPa) and can effectively support thin-walled profiles during the press bending process to reduce the section distortion rate. Due to the inconsistent of the force on the upper and lower surfaces of profile during the press bending process, the section distortion law for the contact surface of the upper and lower dies is different. The variation law of section distortion rate at the contact surface of the upper and lower dies after press bending with different profile structures (without filling) is basically the same as that during the filled press bending, which shows that changing the profile structure can slightly reduce the section distortion rate, but the improvement is not obvious. The section distortion condition in scheme 9 (profile structure 2, PP-filling method 2) after press bending is significantly better than that in scheme 8 (profile structure 1, PP-filling method 1), and through the verification test of scheme 9, the section distortion rate after press bending is significantly better than that in scheme 5 (original structure-without filling) and meets the design requirements.

Funds：

南宁市科学研究与技术开发计划项目(20221028)

作者简介: 廖　斌(1992-), 男, 博士, 副高级工程师 E-mail: bin. liao@ foxmail. com 通信作者: 吴晓东(1974-), 男, 博士, 副研究员 E-mail: xiaodongwu@ cqu. edu. cn

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