This paper designs a new kind of nozzle used for laser welding of zinc-coated steels with metal powder and studies the better modality of shielding gas and the powder beam with schlieren device.
本文设计了一套应用于镀锌板激光填充粉末焊接的喷嘴，并利用纹影仪等手段研究了该喷嘴的最佳保护气流量和最佳粉末束拘束度参数；
The results show that the stable and reliable shielding gas can be obtained with a simple gas cooling TIG gun when it possesses oblique holes on the nozzle device.
测试和实焊表明，带有斜孔导气装置的TIG气冷焊枪，保护性能稳定可靠，结构简单，具有推广价值。
The influence of gas velocity from nozzle, distance between parts and nozzle exit, moving velocity of nozzle and crosswind velocity were systematically investigated on shielding gas field.
系统研究了喷嘴保护气流速度、喷嘴出口距零件表面距离、喷嘴移动速度和侧风速度对气体保护效果的影响。
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