锻压技术

航空5A02铝合金波纹管电磁成形的试验研究

英文标题：Experimental research on electromagnetic forming for aeronautic 5A02 aluminum alloy bellows

作者：白雪山1 张鑫1 张帅1 张铁森2 赵天章2

分类号：TG386

出版年,卷(期):页码：2021,46(12):165-168

摘要：

采用电磁成形的方法成形了航空5A02铝合金波纹管（外径为Φ50 mm，壁厚为1 mm，波纹高度为3.2 mm，波纹间距为20 mm，过渡圆角半径为6.5 mm），获得了最佳的成形工艺参数，所采用的铜线截面为3 mm×7 mm，由9匝绕制而成，放电能量为16 kJ，峰值电流为60 kA，频率为4.98 kHz。并利用激光多普拉测试了波纹特征截面上沿着周向不同位置的峰值成形速度，并得到平均成形速度约为208 m·s-1。分别测量、分析了不同波纹特征的截面和沿轴向不同位置的贴模度、减薄量和硬度，结果显示：最大贴模间隙为0.21 mm，平均减薄率为11.9%，平均显微硬度约为53 HV。另外，波纹特征中间部分的电磁成形力最大，贴模好、减薄量大，硬化程度高于两端。

Aeronautic 5A02 aluminium alloy bellow (outer diameter of 50 mm, wall thickness of 1 mm, corrugation height of 3.2 mm, corrugation pitch of 20 mm, transition fillet radius of 6.5 mm) was formed by electromagnetic forming method, and the optimum forming process parameters were obtained with the cross-sectional area for copper wire of 3 mm×7 mm wound with nine turns, the discharge energy of 16 kJ, the peak current of 60 kA and the frequency of 4.98 kHz. Then, the peak forming speeds at different positions along the circumferential direction on the corrugated feature section were measured by Laser Doppler Velocimetry, and the average forming speed was obtained about 208 m·s-1. Furthermore, the die attaching degree, thinning amount and hardness in the different corrugated feature sections and different positions along the axial direction were measured and analyzed, namely, the maximum die attaching gap was about 0.21 mm, the average thinning rate was about 11.9%, and the average hardness was about 53 HV. In addition, the electromagnetic forming force in the middle part of the corrugated feature was largest with good die attaching, large thinning amount and hardening degree higher than the two ends.

基金项目：

白雪山（1981-），男，学士，高级工程师 E-mail：bxshan@163.com

参考文献：

[1] 彭赫力, 张小龙,李中权,等.波纹管液压成形数值模拟和试验[J].航天制造技术,2015,4(2):23-25,30.

Peng H L, Zhang X L, Li Z Q, et al.Numerical simulation and experiment of bellow hydraulic forming [J]. Aerospace Manufacturing Technology,2015,4(2):23-25,30.

[2] 刘静, 王有龙,李兰云,等.工艺参数对双层304不锈钢波纹管液压胀形的影响[J].塑性工程学报,2017,24(4):11-20.

Liu J, Wang Y L, Li L Y, et al. Effect of technological parameters on hydraulic bulging of doublelayer 304 stainless steel bellows [J]. Journal of Plastic Engineering,2017,24(4):11-20.

[3] 郑文涛, 苏明,周丽新.钛合金TC4薄壁波纹管液压成形工艺优化[J].塑性工程学报,2017,24(5):52-58.

Zheng W T, Su M, Zhou L X. Hydroforming process optimization of titanium alloy TC4 thinwall bellows [J]. Journal of Plastic Engineering,2017,24(5):52-58.

[4] 詹梅, 石丰,邓强,等.铝合金波纹管无芯模缩径旋压成形机理与规律[J].塑性工程学报,2014,21(2):108-115.

Zhan M, Shi F, Deng Q, et al. Forming mechanism and rules of mandreless neckspinning on corrugated pipes [J]. Journal of Plastic Engineering,2014,21(2):108-115.

[5] 洪秀冬, 黄亮,李建军,等.大口径铝合金波纹管电磁胀形数值模拟[J].精密成形工程,2016,8(4):1-7.

Hong X D, Huang L, Li J J, et al. Numerical simulation of electromagnetic expansion of largediameter aluminum alloy bellows [J]. Precision Forming Engineering,2016,8(4):1-7.

[6] 宋福民, 王仲仁,张旭,等.管件电磁成形研究[J].塑性工程学报,1996, 3(3):15-22.

Song F M, Wang Z R, Zhang X, et al. Research on electromagnetic forming of pipe[J].Journal of Plasticity Engineering, 1996,3(3):15-22.

[7] 李春峰, 于海平.电磁成形技术理论研究进展[J].塑性工程学报,2005,12(5):1-7.

Li C F, Yu H P. Progress in theoretical research of electromagnetic forming technology[J]. Journal of Plasticity Engineering, 2005,12(5):1-7.

[8] Lee S H, Lee D N. A finite element analysis of electromagnetic forming for tube expansion[J]. Journal of Engineering Materials and Technology, 1994, 116(2): 250-254.

[9] Yu H P, Li C F. Effects of coil length on tube compression in electromagnetic forming[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(6): 1270-1275.

[10]Yu H P, Li C F, Liu D H, et al. Tendency of homogeneous radial deformation during electromagnetic compression of aluminium tube[J]. Transactions of Nonferrous Metals Society of China, 2010, 20(1): 7-13.

[11]赵志衡, 李春峰, 邓将华. 管坯电磁成形时线圈受力的研究[J]. 材料科学与工艺, 2005, 12(4): 387-390.

Zhao Z H, Li C F, Deng J H. Study on the force of coil in electromagnetic forming of Tube[J]. Materials Science and Technology, 2005, 12(4): 387-390.

[12]黄尚宇, 常志华,田贞武,等.管件电磁成形电磁力分布特性分析[J].塑性工程学报,2000,7(2):30-34.

Huang S Y, Chang Z H, Tian Z W, et al. Analysis of electromagnetic force distribution characteristics of electromagnetic forming of pipe fittings[J]. Journal of Plasticity Engineering, 2000,7(2):30-34.

[13]王哲峰, 陈超,高铁军.电磁成形数值模拟中的结构场分析研究进展[J].机械设计与制造,2019,12:264-267.

Wang Z F, Chen C, Gao T J. Research progress of structural field analysis based onnumericalsimulation of electromagnetic forming[J]. Machinery Design & Manufacture, 2019,12:264-267.

服务与反馈：

【文章下载】【加入收藏】