锻压技术

5052H32铝合金薄板自冲铆接和无铆连接对比研究

英文标题：Comparative study on self-piercing riveting and clinching for 5052H32 aluminum alloy sheet

作者：单丰武杨海王付才聂小勇曾建邦

分类号：TG938

出版年,卷(期):页码：2021,46(5):101-108

摘要：

对厚度为1.2 mm的汽车用5052H32铝合金薄板自冲铆接和无铆连接进行了对比研究。结果表明：铆钉长度为4 mm时，SPR接头互锁值较小，接头强度及能量吸收值较低，受剪切拉伸时铆钉角易从底层板脱离；铆钉长度为6 mm时，SPR接头底层板的最小剩余厚度较小，有腐蚀风险；铆钉长度为5 mm时，SPR接头强度、能量吸收值及剖面金相参数值为综合最优；无铆连接时，铆点数与接头强度值呈线性关系，与能量吸收值的关系可以通过二次多项式进行拟合。不同铆接方式的接头在横向和纵向受力方向上的强度和能量吸收值基本无差异。无铆连接接头受剪切拉伸时,其失效形式有3种：上层板颈部位置撕裂失效，上、下层板互锁脱离失效，混合失效。单点SPR的静强度等效于2个Clinching铆点，单点SPR铆接能量吸收值等效于3.6个Clinching铆点。

The self-piercing riveting (SPR) and clinching of 5052H32 aluminum alloy sheet with the thickness of 1.2 mm for automobiles were comparatively studied. The result shows that when the rivet length is 4 mm, the interlock value of SPR joint is small, the joint strength and energy absorption value are low, and the rivet corners are easy to separate from the bottom plate when it is subjected to shearing and stretching. When the rivet length is 6 mm, the minimum remaining thickness of the bottom plate for SPR joint is small, and there is a risk of corrosion. When the rivet length is 5 mm, the strength, energy absorption value and metallographic parameter of SPR joint are comprehensively optimal. Furthermore, during the

clinching process,the number of riveting points has a linear relationship with the joint strength, and the relationship with the energy absorption value is fitted by a quadratic polynomial. In addition, the strength and energy absorption value of joints obtained by different riveting methods in the transverse and longitudinal force directions are basically no difference, and when the clinching joint is subjected to shearing and stretching, there are three failure modes such as tear fracture at the neck position of the upper sheet, interlocking and disengaging fracture of the upper and lower sheets and mixing fracture of the above two modes. Finally, the static strength of single-point SPR is equivalent to that of two riveting poomts for clinching, the energy absorption value of single-point SPR is equivalent to that of 3.6 riveting points for clinching.

基金项目：

国家自然科学基金青年基金资助项目(51206171);江西省自然科学基金资助项目(20192BAB206033)

单丰武（1974-），男，硕士，教授级高工 E-mail：shanfw@jmev.com 通讯作者：杨海（1986-），男，硕士，工程师 E-mail：670424078@qq.com

参考文献：

[1]范子杰，桂良进，苏瑞意. 汽车轻量化技术的研究与进展[J]. 汽车安全与节能学报，2014，5(1)：1-16.

Fan Z J, Gui L J, Su R Y. Research and development of automotive lightweight technology[J]. Journal of Automotive Safety and Energy, 2014, 5(1): 1-16.

[2]谢辉，孙延，王杭燕. 基于某款纯电动汽车的动力电池包结构设计及优化[J]. 塑形工程学报，2020，27(12):88-96.

Xie H, Sun Y, Wang H Y. Structural design and optimization of power battery pack based on a pure electric vehicle[J]. Journal of Plasticity Engineering，2020，27(12):88-96.

[3]杨海，单丰武，李慎国，等. 汽车用铝合金不同链接技术对比研究[J]. 汽车工艺与材料，2020，（2）：18-21.

Yang H, Shan F W, Li S G, et al. Comparative study of different joining process for automobile aluminum[J]. Automobile Technology & Material，2020，（2）：18-21.

[4]Li D Z, Chrysanthou A, Patel I, et al. Selfpiercing rivetingA review[J]. Int. J. Adv. Manuf. Technol., 2017, 92:1777-1824.

[5]Mori K, Abe Y. A review on mechanical joining of aluminum and high strength steel sheets by plastic deformation[J]. International Journal of Lightweight Materials and Manufacture, 2018, 1:1-11.

[6]王亚娟，杨建华. 表面处理对铝合金6063胶接接头力学性能的影响[J]. 焊接技术，2020, 49(1):19-25.

Wang Y J, Yang J H. Effect of surface treatment on bonding mechanical properties of aluminum alloy 6063[J]. Welding Technology, 2020, 49(1):19-25.

[7]钱让发. 白车身热熔自攻丝工艺参数的分析与优化[D]. 合肥：合肥工业大学，2019.

Qian R F. Analysis and Optimization of Flow Drill Screwdriving Process Parameters for Body in White[D]. Hefei: Hefei University of Technology, 2019.

[8]余康，刑保英，何晓聪,等. AA5052自冲铆接头成型质量及其静力学性能研究[J]. 塑性工程学报，2018，25(3)：143-147.

Yu K, Xing B Y, He X C, et al. Study on forming quality and static performance of AA5052 selfpiercing riveting joint[J]. Journal of Plasticity Engineering，2018, 25(3): 143-147.

[9]余康，刑保英，何晓聪,等. 铆接方式对AA5052铝合金自冲铆接头静力学性能的影响[J].兵器材料科学与工程，2018，41(3)：52-55.

Yu K, Xing B Y, He X C, et al. Effect of riveting methods on static mechanical properties of selfpiecing riveted joints in AA5052 aluminum alloy[J]. Ordnance Material Science and Engineering, 2018, 41(3)：52-55.

[10]徐凡，赵升吨，朱牧之,等. 影响汽车轻量化板料无铆钉连接接头强度的因素[J]. 轻合金加工技术， 2019，47(2)：56-71.

Xu F, Zhao S D, Zhu M Z, et al. Factors influencing the strength of the clinched joint for automotive light weight sheets[J]. Light Alloy Fabrication Technology, 2019, 47(2): 56-71.

[11]闫维明，幕婷婷，谢志强,等. 装配式冷弯薄壁型钢结构中4中连接的抗剪切性能试验研究[J]. 北京工业大学学报，2018，44(8)：1099-1108.

Yan W M, Mu T T, Xie Z Q, et al. Experimental study on shear behavior of four connections in fabricated coldformed steel structures[J]. Journal of Beijing University of Technology,2018, 44(8): 1099-1108.

[12]黄志超，刘晓坤，厦令君,等. 自冲铆接、无铆连接与电阻点焊强度对比试验研究[J]. 中国机械工程，2012,23(20)：2487-2491.

Huang Z C, Liu X K, Xia L J, et al. Joining strength comparison among selfpiercing riveting, Clinching and resistance spot welding[J]. China Mechanical Engineering, 2012, 23(20)：2487-2491.

[13]Mucha J, Witkowski W. The experimental analysis of the double joint type change effect on the joint destruction process in uniaxial shearing test[J]. TestWalled Structures, 2013, 66：39-49.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】