Transactions of Materials and Heat Treatment

Title：Electromagnetic incremental forming combined with stretch forming technology for large-scale and thin-walled aluminum alloy sheet

Authors： Zhang Zhiwu Cui Xiaohui Huang Changqing Xiao Xiaoting Li Jianjun Mo Jianhua

Unit： Central South University Guangdong University of Technology Huazhong University of Science and Technology

KeyWords： electromagnetic incremental forming composite forming large-scale and thin-walled parts double waist coil multi-discharging

ClassificationCode：TG391

year,vol(issue):pagenumber：2019,44(3):41-49

Abstract：

Combining electromagnetic incremental forming (EMIF) with traditional stretch forming (SF) technology，a novel composite forming method for sheet metal was developed, which realized the precise manufacturing of large thin-walled surface aluminum alloy parts. Then, a 3D simulation model was established, and the influences of coil structure, the number of coils, coils moving path, dimension of pressing plate and combination of different sizes of pressing plate on the final forming quality were analyzed. According to the simulation results, the problem of non-uniform deformation of materials was solved by symmetrical discharge of double-waist coil, and the experimental platform was built with small discharge energy (<9.6 kJ) and small tooling (table size is 1.4 m×1.4 m). Finally, the coil was discharged 86 times and stretched eleven times, and the aluminum alloy ellipsoidal parts were obtained with diameter Φ700 mm and height 150 mm. The results show that comparing with spinning, the new method can obviously inhibit the wall thickness reduction, and comparing with traditional stamping, the new method can greatly inhibit wrinkle.

Funds：

国家自然科学基金资助项目（51775563，51405173）；广州市科技计划项目（201707010472）；中南大学高性能复杂制造国家重点实验室（ZZYJKT2017-03）；华中科技大学材料成形与模具技术国家重点实验室开放课题研究基金（P2017-013）;中南大学研究生自主探索创新项目（502211810）

张志武（1994-），男，硕士研究生,E-mail：163812020@csu.edu.cn;通讯作者：崔晓辉（1984-），男，博士，副教授,E-mail：cuixiaohui622@csu.edu.cn

Reference：

［1］李继贞. 强力旋压成形技术在航空领域的新进展
［J］. 航空制造技术，2014, 454(10): 40-44.

Li J Z. New progress of power spinning technology in aeronautics
［J］. Aviation Manufacturing Technology，2014, 454(10): 40-44.

［2］苑世剑，刘伟，徐永超. 板材液压成形技术与装备新进展
［J］. 机械工程学报，2015, 51(8): 20-28.

Yuan S J, Liu W, Xu Y C. New development on technology and equipment of sheet hydroforming
［J］. Journal of Mechanical Engineering，2015, 51(8): 20-28.

［3］国家自然科学基金委员会工程与材料科学部. 机械工程学科发展战略报告
［M］. 北京：科学出版社，2010.

National Natural Science Foundation of China, Department of Engineering and Materials Science. Mechanical Engineering Discipline Development Strategy Report
［M］. Beijing: Science Press, 2010.

［4］陈文韬, 于海平, 赵鹏, 等. 铝合金管缩口-冲孔复合电磁成形试验研究
［J］. 锻压技术, 2018,43 (3):52-58.

Chen W T，Yu H P，Zhao P，et al. Experimental investigation on necking-punching electromagnetic forming for aluminum alloy tube
［J］.Forging & Stamping Technology,2018,43(3):52-58.

［5］Balanethiram V S, Daehn G S. Hyperplasticity: increased forming limits at high workpiece velocity
［J］. Scr. Metall. Mater.，1994, 30: 515-520.

［6］李春峰. 高能率成形技术
［M］.北京：国防工业出版社，2001.

Li C F. High Energy Rate Forming Technology
［M］. Beijing：National Defence Industry Press, 2001.

［7］Cui X H, Mo J H, Li J J, et al. Electromagnetic incremental forming (EMIF): a novel aluminum alloy sheet and tube forming technology
［J］. Journal of Materials Processing Technology, 2014, 214(2)：409-427.

［8］Li H W, Yao X, Yan S L, et al. Analysis of forming defects in electromagnetic incremental forming of a large-size thin-walled ellipsoid surface part of aluminum alloy
［J］. Journal of Materials Processing Technology, 2018, 255:703-715.

［9］Tan J, Zhan M, Li H. Dependence on forming parameters of an integral panel during the electromagnetic incremental forming process
［J］. Chinese Journal of Aeronautics, 2018，31（7）：1625-1634.

［10］陈文韬, 于海平, 赵鹏, 等. 铝合金管缩口-冲孔复合电磁成形试验研究
［J］. 锻压技术, 2018,43(3):52-58.

Chen W T, Yu H P, Zhao P, et al.Experimental investigation on necking-punching electromagnetic forming for aluminum alloy tube
［J］. Forging & Stamping Technology, 2018,43(3):52-58.

［11］Taleb Araghi T, Manco G L, Bambach M, et al. Investigation into a new hybrid forming process: Incremental sheet forming combined with stretch forming
［J］. CIRP Annals-Manufacturing Technology,2009, 58:225-228.

［12］Cui X H, Mo J H, Li J J, et al. Large-scale sheet deformation process by electromagnetic incremental forming combined with stretch forming
［J］. Journal of Materials Processing Technology, 2016, 237：139-154.

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