锻压技术

基于弹性介质的铝合金板材小尺寸凸角电磁成形试验研究

英文标题：Experimental study on electromagnetic forming of aluminum alloy sheet with small convex angle based on elastic medium

作者：陈浩朱卫东蒋鹏张建波金红周林魏巍陆辛

单位：北京机电研究所有限公司中国机械工程学会塑性工程分会

关键词：电磁成形 6014铝合金板材凸角弹性介质

分类号：TG391

出版年,卷(期):页码：2019,44(3):181-187

摘要：

针对6014铝合金板材的V形凸角成形，开展了基于弹性介质的带驱动板的电磁成形工艺试验研究，探究磁脉冲放电、弹性介质硬度、凹模空腔真空度以及弹性介质形状尺寸等因素对铝合金薄板小尺寸凸角成形能力的影响。试验结果表明，磁脉冲放电电压越大、弹性介质硬度越小、凹模空腔真空度越高，成形的凸角高度越大。并通过对弹性介质形状、尺寸和模具结构的优化，最终在放电电压为3.5 kV、聚氨酯硬度为A90、凹模空腔真空度为3.2 Pa的条件下获得了较为理想的V形凸角成形效果，凸角高度为2.92 mm，凸角顶端圆角半径为R1 mm，达到了小圆角特征的成形精度要求。

Aiming at V-shaped convex angle forming of 6014 aluminium alloy sheet, the experimental study on electromagnetic forming process with driving plate based on elastic medium was carried out. The effects of magnetic pulse discharge voltage, hardness of elastic medium, vacuum degree of cavity and shape and size of elastic medium on forming ability of small-sized convex angle of aluminium alloy sheet were investigated.The experimental results show that the higher the discharge voltage of magnetic pulse, the smaller the hardness of elastic medium and the higher the vacuum degree of the cavity, the higher the height of the convex angle. By optimizing the shape, size and die structure of the elastic medium, the ideal V-shaped convex angle forming effect was obtained under the discharge voltage of 3.5 kV, polyurethane hardness of A90 and cavity vacuum of the concave die of 3.2 Pa, and the convex angle height was 2.92 mm and the minimum fillet was R1 mm, which met the forming accuracy requirement of small fillet.

基金项目：

国家国际科技合作专项项目（2015DFR71080）

陈浩（1994-），男，硕士研究生，E-mail：1197029766@qq.com；通讯作者：朱卫东（1968-），男，硕士，硕士生导师，研究员，E-mail：903521354@qq.com

参考文献：

［1］李春峰, 于海平, 刘大海. 铝合金磁脉冲辅助板材冲压技术研究进展
［J］. 中国机械工程, 2008, 19 (1): 108-113.

Li C F, Yu H P, Liu D H. Electromagnetically assisted sheet metal stamping of aluminum alloy.
［J］. China Mechanical Engineering, 2008, 19 (1): 108-113.

［2］张胜俊, 李辉. 汽车车身铝合金板材的应用及发展趋势
［J］. 汽车工程师, 2015, (3):16-18.

Zhang S J, Li H. Application and development of aluminum-alloy body of vehicle.
［J］. Auto Engineer, 2015, (3):16-18.

［3］刘大海.5052铝合金板材磁脉冲辅助冲压成形变形行为及机理研究
［D］. 哈尔滨: 哈尔滨工业大学,2010.

Liu D H. Deformation Behavior and Mechanism Electromagnetically Assisted Sheet Metal Stamping of 5020 Aluminum Alloy
［D］. Harbin: Harbin Institute of Technology,2010.

［4］刘大海, 于海平, 李春峰, 等. AA5052板材准静态/动态平面应变成形极限试验研究
［J］. 材料科学与工艺, 2009, 17(5): 593-596.

Liu D H, Yu H P, Li C F, et al. Experimental investigation on forming limits of AA5052 sheet in hybrid quasi-static/dynamic plane-strain tensile process
［J］. Materials Science and Technology, 2009, 17(5): 593-596.

［5］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
［M］. Beijing: National Defense Industry Press,2001.

［6］陈文峰,黄尚宇,孟正华,等.电磁成形技术在铝合金成形中的应用前景
［J］.锻压装备与制造技术,2003, 38(3):40-43.

Chen W F, Huang S Y, Meng Z H, et al. Application prospect of electromagnetic forming technology in aluminium
［J］. China Metalforming Equipment & Manufacturing Technology,2003, 38(3):40-43.

［7］金飞翔. 不同预变形不同应变速率铝合金板材变形行为及应用研究
［D］. 北京：机械科学研究总院, 2017.

Jin F X. Research on Deformation Behavior and Application of Pre-deformed Aluminum Alloy Sheet with Different Strain Rate
［D］. Beijing: China Academy of Machinery Science and Technology, 2017.

［8］周文华. 预变形铝合金板材高应变率塑性变形行为研究
［D］. 南昌: 南昌航空大学, 2014.

Zhou W H. Plastic Deformation Behaviors of Pre-strained Aluminum under High Strain Rate Loadings
［D］. Nanchang: Nanchang Hangkong University, 2014.

［9］傅爱杰. 铝合金薄壁柱壳电磁胀形增塑性机理研究
［D］. 宁波: 宁波大学,2017.

Fu A J. Hyper-plasticity Mechanism of Electromagnetic Expanding Forming for Aluminum Alloy Tubes
［D］. Ningbo: Ningbo University,2017.

［10］郎利辉, 王耀, 张泉达,等. 板材小圆角柔性成形机理
［J］. 中南大学学报: 自然科学版, 2017, 48(9):2324-2330.

Lang L H, Wang Y, Zhang Q D, et al. Mechanism research on sheet flexible forming with small round corner
［J］. Journal of Central South University: Nature Science Edition, 2017, 48(9):2324-2330.

［11］王耀. 粘性介质加载方式对板材成形性能影响的研究
［D］. 沈阳：沈阳航空航天大学,2014.

Wang Y. Research on Influence of Viscous Medium Loading Mode on Formability of Sheet Metal
［D］. Shenyang：Shenyang Aerospace University,2014.

［12］王新云,夏巨谌,胡国安,等.板料粘性介质胀形、聚氨酯以及钢凸模胀形的实验研究
［J］.金属成形工艺,2003,21(2):10-12, 18.

Wang X Y, Xia J C, Hu G A, et al. Experimental investigation on sheet bulging with viscous mediumpolyurethane and steel as punch
［J］.Metalforming Technology,2003,21(2):10-12, 18.

［13］王蕾. PEMFC双极板磁脉冲成形研究
［D］. 哈尔滨: 哈尔滨工业大学, 2011.

Wang L. Research on Electromagnetic Forming of PEMFC Bipolar Plate
［D］. Harbin: Harbin Institute of Technology,2011.

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