工艺顺序对车用铝薄板胶-PFSSW接头拉剪性能的影响

doi:10.13229/j.cnki.jdxbgxb.20230507

摘要/Abstract

摘要：

针对车身用1.5 mm的AA6061-T6铝合金薄板，研究采用透胶胶焊法和毛细作用胶焊法两种工艺对PFSSW-胶点焊接头拉剪性能的影响。通过热力耦合法对搭接区域温度场进行分析，然后对比不同工艺顺序接头的拉剪性能及断裂模式。结果表明：相比PFSSW和透胶胶焊法，毛细作用胶焊法能够明显提升铝薄板接头的拉剪性能。本文为车身铝薄板及其他胶焊接头的连接工艺提供了方法支持。

关键词: 车辆工程, 胶接点焊, 无针搅拌摩擦点焊, 拉剪失效载荷, 断口形貌

Abstract:

For the 1.5 mm thick AA6061-T6 aluminum alloy sheet for bodywork， the effect of two processes on the tensile shear performance of PFSSW-glued spot welding joints was studied using the penetrating glue welding method and the capillary action glue welding method. The temperature field in the lap region was analyzed by the thermal coupling method， and then the tensile shear properties and fracture modes of the joints using different process sequences were compared. The results show that the capillary action glue welding method can significantly improve the tensile shear performance of aluminum sheet joints compared to PFSSW and penetration glue welding methods. Methodological support is provided for the joining process of aluminum sheet metal and other glue welded joints for bodywork.

Key words: vehicle engineering, weld bonding, probeless friction stir spot welding, tensile-shear failure load, fracture morphology

中图分类号:

U465.2

陈鑫,张祥源,武子涛,于贵申,杨立飞. 工艺顺序对车用铝薄板胶-PFSSW接头拉剪性能的影响[J]. 吉林大学学报(工学版), 2025, 55(2): 468-475.

Xin CHEN,Xiang-yuan ZHANG,Zi-tao WU,Gui-shen YU,Li-fei YANG. Effect of process sequence on tensile shear properties of PFSSW joints for automotive aluminum sheets[J]. Journal of Jilin University(Engineering and Technology Edition), 2025, 55(2): 468-475.

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参考文献 12

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力学性能	参数
弹性模量/GPa	1.85±0.21
泊松比	0.33
剪切模量/GPa	0.56±0.21
密度/（kg·mm^-3）	1 450
拉伸失效强度/MPa	21.63±1.61
拉伸失效应变/%	4.77±0.21
剪切失效强度/MPa	17.9±1.8
剪切失效应变/%	43.9±3.4

焊接参数	参数水平
焊接参数	低（-1）	中（0）	高（1）
转速/（r·min^-1）	3 000	3 500	4 000
下压量/mm	0.4	0.5	0.6
停留时间/s	9	12	15

焊接参数	参数水平
焊接参数	低（-1）	中（0）	高（1）
转速/（r·min^-1）	2 500	3 000	3 500
下压量/mm	0.4	0.5	0.6
停留时间/s	6	9	12