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激光深熔焊过程中会在熔池上方产生等离子体云,若该等离子体云过密,将降低激光入射到工件表面能量密度。在工业应用中,常采用侧吹辅助气体来减弱等离子体云的影响。本文通过试验,研究了在不同气体流量下。侧吹气体方向不同对焊接过程稳定性和焊缝成形的影响。结果发现:使用大功率CO_2激光焊接AH32时,侧吹气体方向对焊缝成形有着明显的影响。从熔池和等离子体两个方面,解释了侧吹气体方向的影响机制。
Laser deep fusion welding process will produce plasma clouds above the pool, if the plasma cloud is too dense, will reduce the laser incident on the workpiece surface energy density. In industrial applications, side-blown auxiliary gases are often used to attenuate the effects of the plasma cloud. This article through experiments, studied at different gas flow rates. Effect of Different Direction of Side Blowing Gas on Welding Process Stability and Weld Forming. The results show that the direction of the side blown gas has a significant effect on the weld formation when the high-power CO2 laser is used to weld the AH32. From the aspects of puddle and plasma, the influence mechanism of the side blowing gas direction is explained.