Transactions of Materials and Heat Treatment

Title：Optimization on experimental process parameters in hydroforming of hood inner panel for 5182 aluminum alloy

Authors： Feng Yao Cai Yujun Guo Zhiyuan Yuan Binxian Chen Lin Yang Shengwei Sun Gang Yu Hongzhe

Unit： Tianjin University of Technology and Education Tianjin Tianduan Aviation Technology Co. Ltd.

KeyWords： 5182 aluminum alloy hood inner panel hydroforming forming defect pressure of liquid chamber

ClassificationCode：TG311

year,vol(issue):pagenumber：2021,46(11):107-112

Abstract：

For 5182 aluminum alloy automobile hood inner panel, the application of hydroforming technology in its forming process was studied. Then, according to the tensile experiment results, the hydroforming process of automobile hood inner panel for aluminum alloy was simulated by Dynaform, and the defect forms of part after forming in the experiment process were analyzed, and the corresponding solution measures were proposed. The results show that the quality defects in the forming process of part can be solved by measures, such as adjusting the height of drawbead, controlling the pressure of liquid chamber and increasing the lubrication of part. The part obtained by hydroforming after optimizing the process parameters can fit the mold well and has better surface quality, which can meet the requirements of low tonnage equipment, and the maximum thinning rate is less than 17.2%. Finally, the formed part is qualified after the part index detection. Thus, the hydroforming provides a reliable process for the mass production of automotive aluminum alloy hood inner panel.

Funds：

国家自然科学基金资助项目（52075386）；天津市技术创新引导专项（基金）企业技术特派员项目（20YDTPJC01040）；天津市教委科研计划项目（2020KJ106）；国家级大学生创新创业训练计划项目（202110066035）

作者简介：冯瑶（1996-），女，硕士，E-mail：206609727@qq.com；通信作者：蔡玉俊（1970-），男，博士，教授，E-mail：cyjal@126.com

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