Transactions of Materials and Heat Treatment

Title：Forming process of outer protection plate

Authors： Wang Yanqin1 Wang Dong1 Li Jiguang1 Gu Chunjie1 Wang Zhen1 Liang Lidong1 Wang Yue1 Liu Cong2

Unit： 1. Tianjin Aerospace Long March Rocket Manufacturing Co. Ltd. 2. School of Mechanical Engineering and Automation Beihang University

KeyWords： outer protection plate stamping irregular flow wrinkling springback

ClassificationCode：

year,vol(issue):pagenumber：2022,47(3):79-82

Abstract：

For the outer protection plate, in view of the problems of irregular flow, serious wrinkling and arc springback generated in the stamping process, the finite element analysis of the stamping process was conducted by Dynaform software, and through comparing the data of direct stamping, stamping after roll bending and stamping after bending for billet, the optimized forming process and die springback amount were obtained to complete the stamping process design of the outer protection plate. Then, combined the analysis results of finite element, the experimental verification was carried out. The results show that stamping after bending for parts can reduce the occurrence of irregular flow and serious wrinkling phenomenon in the forming process. The arc springback of part is reduced and the forming accuracy is improved if 15% springback rate is considered for the arc of forming die. In addition, through production experience and experimental verification, it is found that adding annealing in the forming process can improve the forming accuracy and reduce the wrinkling phenomenon of parts.

Funds：

王妍琴（1987-），女，硕士，工程师 E-mail：1124337718@qq.com

Reference：

[1]徐浩. 汽车后纵延伸梁冲压成形工艺优化设计 [D]. 镇江: 江苏大学，2020.

Xu H. Optimized Design of Stamping Process for Automobile Rear Longitudinal Extension Beam [D]. Zhenjiang: Jiangsu University，2020.

[2]杨立军, 孙荣创.金属薄板成形的有限元仿真技术[J]. 机床与液压, 2010, 38(6)：104-106.

Yang L J, Sun R C. Finite element simulation technology of sheet metal forming[J]. Machine Tool & Hydraulics, 2010,38(6)：104-106.

[3]孙杰, 袁国定,陈炜.薄板多工步冲压成形仿真的关键技术及有待解决的问题[J].新技术新工艺,2003,(5):2-5.

Sun J, Yuan G D, Chen W. Key technologies and problems in simulation of multiple-step stamping of sheet metal[J].New Technology & New Process,2003, (5):2-5.

[4]毕宝鹏, 王勇,孙梦莹. 5A06铝合金超塑性变形力学特性[J]. 塑性工程学报,2015, 22(2)：62-67.

Bi B P, Wang Y, Sun M Y. Mechanical behavior of aluminum alloy 5A06 under superplastic deformation[J].Journal of Plasticity Engineering,2015,22(2)：62-67.

[5]肖永杰, 季田,高根震. AA5754 铝合金板冲压成形仿真及试验研究[J]. 热加工工艺,2014,43(1)：122-125.

Xiao Y J, Ji T, Gao G Z. Simulation of stamping forming and experimental research of aluminum alloy plate[J]. Hot Working Technology,2014,43(1)：122-125.

[6]董浩. 5A06 铝合金双层板充液拉深变形规律研究[D]. 哈尔滨:哈尔滨工业大学,2015.

Dong H. Investigation on Hydro-forming of 5A06 Aluminum Alloy Double-layer Sheets [D]. Harbin: Harbin Institute of Technology, 2015.

[7]文杰. U截面侧弧棱条形件的冲压回弹分析机控制[D]. 重庆:重庆理工大学,2019.

Wen J. Analysis and Control of Stamping Springback of U-scetion Side Are Strip Part [D]. Chongqing: Master′s Dissertation of Chongqiong University of Technology, 2019.

[8]徐丙坤, 施法中,陈中奎. 板料冲压成形数值模拟中的几个关键问题[J].塑性工程学报,2001,(2)：32-35.

Xu B K, Shi F Z, Chen Z K. Several key problems in sheet metal-forming numerical simulation [J]. Journal of Plasticity Engineering,2001,(2)：32-35.

[9]刘克进. 薄板冲压回弹试验研究及数值模拟对比分析[D].长沙：湖南大学,2004.

Liu K J. Experimental Study on Springback and Its FEM Simulation Contrast in Sheet Metal Forming Process [D]. Changsha: Hunan University, 2004.

[10]左佳. 基于Dynaform的小车前门外板冲压工艺参数的优化 [D]. 长沙: 中南林业科技大学，2017.

Zuo J. The Parameters Optimization of Stamping Forming for the Front Door Plate Based in Dynaform Software[D]. Changsha: Central South University of Forestry & Technology, 2017.

[11]何春光. 基于数值模拟的类U形件回弹预测研究[D]. 重庆: 重庆大学，2006.

He C G. Study on Similar U-shape Spring Back Forecast Based on Numerical Simulation [D]. Chongqing: Chongqing University, 2006.

[12]李念奎, 凌杲,聂波,等.铝合金材料及其热处理技术[M]. 北京：冶金工业出版社，2017.

Li N K,Ling G, Nie B, et al. Aluminum Alloy Material and Its Heat Treatment Technology[M]. Beijing: Metallurgical Industry Press, 2017.

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