采用开发出来的振镜螺旋扫描焊接方式进行实验，研究了激光螺旋扫描焊接3003铝合金时螺旋扫描半径与螺旋扫描频率对焊缝成形的影响。实验结果表明，在所测的螺旋扫描参数内，在螺旋扫描频率一定时，螺旋焊接接头熔深随螺旋扫描半径的增大而减小，螺旋焊接接头熔宽随螺旋扫描半径的增大而增大。在螺旋扫描半径一定时，熔深随频率先减小后增大。对各螺旋扫描参数下焊透的试样进行拉伸试验，合适的螺旋扫描参数可以提升焊缝的抗拉强度。在螺旋扫描频率为100 Hz,螺旋扫描半径为0.5 mm时所得焊缝抗拉性能最好，达到母材的74.1%。

This experiment usesthe developed galvanometer spiral scanning laser welding technology to weld 3003 aluminum alloy, studies weld forming under each spiral scanning radius and spiral scanning frequency. Experimental results show that: in spiral scanning parameters measured, spiral scanning weld penetration decreases and scanning weld width increases with the increase of radius under certain spiral scanning frequency. Weld penetration decreases first and then increases with the increase of frequency under certain spiral scanning radius. Tensile tests show that, spiral scanning laser welding can improve the tensile strength under appropriate scanning parameters. The best tensile performance appears when frequency is100 Hz, radius is 0.5 mm, the best tensile performance reached 74.1% of the base metal.