Study on Electromagnetic Punching Quality of AA5182 Aluminum Alloy Sheet

doi:10.3901/JME.2023.12.297

Abstract

Abstract: In order to investigate the effect of discharge energy on the quality of holes produced by electromagnetic punching for AA5182 aluminum alloy sheet, the electromagnetic punching experiments under different discharge energies(3 kJ, 4 kJ, 5 kJ, 6 kJ) are carried out on AA5182 aluminum alloy cold-rolled sheets with a thick of 2.0 mm. The quality evaluation including dimensional accuracy, surface roughness, microstructure and micro hardness is implemented. The results show that the discharge energy has significant effects on the quality of the punched holes. That is, with the increase of discharge energy, the dimensional accuracy, surface finish, microstructure quality and micro hardness of punched holes are improved to a certain extent. Compared with 3 kJ, when the discharge energy is 6 kJ, the dimensional deviation of punched holes is decreased by 74.36% to 91.32%, the surface roughness value is decreased by 33.33% to 45.92%, the microstructure quality (burnish zone height) is increased by 47.56% to 63.39%, and the micro hardness value is increased by 6.74% to 6.98%. Therefore, it can be concluded that the electromagnetic punching quality of AA5182 aluminum alloy sheets is significantly improved with the increase of discharge energy. In addition, this work can provide scientific guidance to some extent for the application of electromagnetic punching technology in automobile industry.

Key words: aluminum alloy, electromagnetic punching, high-speed punching

CLC Number:

TG146.2

DUAN Liming, HONG Zhibo, CUI Junjia, LI Guangyao, JIANG Hao. Study on Electromagnetic Punching Quality of AA5182 Aluminum Alloy Sheet[J]. Journal of Mechanical Engineering, 2023, 59(12): 297-305.

References

[1] 胡斌. 汽车行业发展对轻质结构部件的需求与展望[J]. 精密成形工程,2020,12(3):120-124. HU Bin. Demand and prospect for lightweight structural components in automotive industry[J]. Journal of Netshape Forming Engineering,2020,12(3):120-124.
[2] 李永兵,马运五,楼铭,等. 轻量化多材料汽车车身连接技术进展[J]. 机械工程学报,2016,52(24):1-23. LI Yongbing,MA Yunwu,LOU Ming,et al. Advances in welding and joining processes of multi-material lightweight car body[J]. Journal of Mechanical Engineering,2016,52(24):1-23.
[3] JIANG Hao,ZENG Caocao,LI Guangyao,et al. Effect of locking mode on mechanical properties and failure behavior of CFRP/Al electromagnetic riveted joint[J]. Composite Structures,2021,257:113162.
[4] 杨洋,林森,朱明清. 车用轻量化材料现状及发展趋势[J]. 黑龙江科学,2020,11(18):25-26,29. YANG Yang,LIN Sen,ZHU Mingqing. Present situation and development trend of automotive lightweight materials[J]. Heilongjiang Science,2020,11(18):25-26,29.
[5] LIU Xinglong,SHAO Xuefei,LI Qing,et al. Experimental study on residual properties of carbon fiber reinforced plastic (CFRP) and aluminum single-lap adhesive joints at different strain rates after transverse pre-impact[J]. Composites Part A:Applied Science and Manufacturing,2019,124:105372.
[6] 刘浩,陈玉华,陈超. 铝/镁搅拌摩擦焊-钎焊焊接接头微观组织结构[J]. 精密成形工程,2018,10(5):38-44. LIU Hao,CHEN Yuhua,CHEN Chao. Microstructure of Al/Mg joints produced by friction stir welding-brazing[J]. Journal of Netshape Forming Engineering,2018,10(5):38-44.
[7] 徐佳辉,黄亮,李建军,等. 基于集磁器的电磁冲裁工艺的设计与模拟[J]. 中国机械工程,2020,31(11):1368-1377. XU Jiahui,HUANG Liang,LI Jianjun,et al. Design and simulation of electromagnetic blanking processes based on field shaper[J]. China Mechanical Engineering,2020,31(11):1368-1377.
[8] 唐林,林玲,杨嵩. 加工参数对2024铝合金钻孔加工质量的影响[J]. 工具技术,2022,56(5):31-34. TANG Lin,LIN Ling,YANG Song. Influence of machining parameters on drilling quality of 2024 aluminum alloy[J]. Tool Engineering,2022,56(5):31-34.
[9] 段丽明,洪志波,廖辉,等. CFRP/Al夹层板电磁冲孔分层缺陷研究[J]. 精密成形工程,2021,13(4):67-75. DUAN Liming,HONG Zhibo,LIAO Hui,et al. Study on delamination defect of punched holes in hybrid CFRP/Al stacks produced by electromagnetic punching[J]. Journal of Netshape Forming Engineering,2021,13(4):67-75.
[10] DUAN Liming,JIANG Hao,ZHANG Xu,et al. Experimental investigations of electromagnetic punching process in CFRP laminate[J]. Materials and Manufacturing Processes,2021,36(2):223-234.
[11] ZHENG Qide,ZHUANG Xincun,GAO Zhisheng,et al. Investigation on wear-induced edge passivation of fine-blanking punch[J]. International Journal of Advanced Manufacturing Technology,2019,104(2):4129-4141.
[12] SCHMITZ F,WINTER S,CLAUSMEYER T,et al. Adiabatic blanking of advanced high-strength steels[J]. CIRP Annals,2020,69(1):269-272.
[13] ALTAN T,TEKKAYA A. Sheet metal forming:Processes and applications[M]. Ohio:ASM International,2012.
[14] 陈明和,胡道春. 高速冲裁过程中的韧性断裂和断面质量研究进展[J]. 中国机械工程,2016,27(9):1263-1271. CHEN Minghe,HU Daochun. Research progresses of ductile fracture and blanked surface quality in high-speed blanking[J]. China Mechanical Engineering,2016,27(9):1263-1271.
[15] GAUDILLIERE C,RANC N,LARUE A,et al. High speed blanking:An experimental method to measure induced cutting forces[J]. Experimental Mechanics,2013,53(7):1117-1126.
[16] MAROUANI H,ISMAIL A,HUG E,et al. Numerical investigations on sheet metal blanking with high speed deformation[J]. Materials & Design,2009,30(9):3566-3571.
[17] CUI Junjia,LIAO Hui,DUAN Liming,et al. Experimental investigation on electromagnetic punching process of hybrid CFRP/Al stacks under different discharge energies[J]. Thin-Walled Structures,2020,153:106789.
[18] 史敏,高颖阁,罗海国,等. 一种侧围外板气动冲孔装置[J]. 装备制造技术,2015(2):168-169. SHI Min,GAO Yingge,LUO Haiguo,et al. A side plate pneumatic punching device[J]. Equipment Manufacturing Technology,2015(2):168-169.
[19] 李春峰. 高能率成形技术[M]. 北京:国防工业出版社,2001. LI Chunfeng. High energy rate forming[M]. Beijing:National Defense Industry Press,2001.
[20] PALASTI-KOVACS B,SIPOS S,CZIFRA A. Interpretation of "Rz=4×Ra" and other roughness parameters in the evaluation of machined surfaces[C]//13th International Conference on Tools (ICT-2012),Hungary:Miskolc,2012,237-244.
[21] 金淳,黄亮,李建军,等. 不同热处理状态下成形速率对2219铝合金成形极限的影响[J]. 塑性工程学报,2017,24(1):125-132. JIN Chun,HUANG Liang,LI Jianjun,et al. Influence of forming rate on forming limit of 2219 aluminum alloy under different heat treatment conditions[J]. Journal of Plasticity Engineering,2017,24(1):125-132.
[22] XU Jiahui,HUANG Liang,HONG Xiudong,et al. Research on the electromagnetic blanking based on force-free region deformation:Simulation and experiments[J]. International Journal of Advanced Manufacturing Technology,2020,108:1751-1766.
[23] 牟林,胡建华. 冲压工艺与模具设计[M]. 北京:北京大学出版社,2010. MOU Lin,HU Jianhua. Stamping process and die design[M]. Beijing:Peking University Press,2010.
[24] TANG Zejun,DU Hao,LANG Lihui,et al. Experimental investigation into the electropulsing assisted punching process of 2024 T4 aluminum alloy sheet[J]. Journal of Materials Processing Technology,2018,253:86-98.