Transactions of Materials and Heat Treatment

Title：Hydroforming process on double curvature thin-walled aluminum alloy box part

Authors： Yu Hongzhe1 2 Jiang Xiuyu3 Fan Binbin3 Wu Huadong3 Wang Lin3 Lang Lihui4 Mi Xinzheng1

Unit： 1.Tianjin Tianduan Press Co. Ltd. 2.Tianjin Tianduan Aviation Technology Co. Ltd. 3.Shenyang Aircraft Industry (Group) Co. Ltd. 4. Beihang University

KeyWords： hydroforming double curvature thin-walled aluminum alloy box parts liquid chamber pressure blank holder force loading path lubrication conditions wrinkling cracking

ClassificationCode：TG394

year,vol(issue):pagenumber：2023,48(2):94-101

Abstract：

Double curvature thin-walled aluminum alloy box part is a common aircraft skin sheet metal part. Aiming at the problems of low production efficiency and poor surface quality in the traditional blanking process of the target parts, the hydroforming process is used to form the parts to improve the surface quality of the parts and reduce the die cost. Therefore, the finite element model of hydroforming for double curvature thin-walled aluminum alloy box parts was established by the numerical simulation software, and through analyzing the influences of liquid chamber pressure, blank holder force loading path, lubrication conditions and other factors on the formability of the parts, the wrinkling and cracking situations of the parts forming were analyzed, and the optimum process parameters were optimized. Then, the field experiment was carried out according to the optimized process parameters, and the quality problems of the field experiment parts were analyzed and solved by numerical simulation technology. Finally, the qualified parts were successfully manufactured, and the feasibility of the process scheme and the process parameters was further verified.

Funds：

作者简介：于弘喆（1993-），男，学士，工程师，E-mail：sorayhz@163.com；通信作者：米新征（1985-），男，学士，工程师，E-mail：tdhklwq@163.com

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