不同轴向压力对铝合金侧墙搅拌摩擦焊质量的影响

于岩; 王陆钊; 于海; 徐艳丽; 赵丽玲

高速列车金属材料及焊接先进技术 | 浏览量 : 0 下载量: 66 CSCD: 4

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不同轴向压力对铝合金侧墙搅拌摩擦焊质量的影响
Research on the effect of different axial force on the friction stir welding quality of aluminum alloy side wall
2018年48卷第3期页码：327-330
纸质出版：2018
DOI：
稿件说明：

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于岩, 王陆钊, 于海, 等. 不同轴向压力对铝合金侧墙搅拌摩擦焊质量的影响[J]. 电焊机, 2018,48(3):327-330. DOI：

YU Yan, WANG Luzhao, YU Hai, et al. Research on the effect of different axial force on the friction stir welding quality of aluminum alloy side wall[J]. Eletric Welding Machine2018, 48(3): 327-330. DOI：

摘要

对6005A-T6铝合金侧墙型材进行搅拌摩擦焊(FSW)工艺试验

从宏观金相、拉伸性能和弯曲性能等方面分析得出铝合金地铁侧墙型材的合理工艺参数:主轴转速800 r/min

焊接速度1 000 mm/min

轴向压力14.5 k N

压入量0 mm。在主轴转速和焊速一定的情况下

轴向压力及压入量变化对试件拉伸性能和弯曲性能影响较小。轴向压力的范围不能过大或过小

轴向压力过大易导致搅拌头下扎

损伤母材

轴向压力过小

母材金属搅拌不充分易导致隧道缺陷的产生。随着压入量的增大

越容易产生飞边。

Abstract

In this paper

friction stir welding（FSW） was applied to join 6005 A-T6 aluminum alloy side wall profiles. By using macroscopic metallurgical analysis

tensile tests and bending tests

optimal welding parameters were identified:spindle speed 800 r/min

welding speed 1000 mm/min

axial force 14.5 k N

shoulder plunge depth 0 mm. For a certain spindle speed and welding speed

axial force and shoulder plunger depth had less effects on the tensile and bending properties of joints. The axial force should be controlled critically. Overhigh axial force led to friction tool press down excessively

which damaged the base metal. The axial force being too low induced tunnel defects due to the insufficient stirring in base metal. As the shoulder plunger depth increased

flashes became easy to form.