Abstract The influence of laser welding with beam oscillation on dynamic behaviour of vapor plume, melt pool and keyhole was investigated. The stability of plume morphology is improved with a little fluctuation, and the height and area of plasma plume are decreased as the oscillation frequencies increased. The melt pool morphologies and flowing feature under beam oscillation conditions are also regulated due to the resultant energy deposition, which has an influence on weld solidification process. The re-melting effect of circular beam oscillation can eliminate pores formation and improve weld quality.

中文翻译：

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光束振荡激光焊接不锈钢的蒸汽羽流和小孔动力学分析

摘要 研究了光束振荡激光焊接对蒸汽羽流、熔池和小孔动态行为的影响。羽流形态的稳定性有所提高，波动幅度较小，等离子体羽流的高度和面积随着振荡频率的增加而减小。由于产生的能量沉积，光束振荡条件下的熔池形态和流动特征也受到调节​​，这对焊缝凝固过程有影响。圆梁振荡的重熔作用可消除气孔形成，提高焊缝质量。