Plug-weld the connection between the closing panel and the inner light housing under shielding gas.
用气体保护塞焊，焊接封闭板与内侧灯罩之间的接合处。
2
The results indicate that argon shielding can reduce the nitrogen content but not influence that of oxygen in the weld metal.
结果表明，采用氩气保护使焊缝金属中的氮含量减少，而对氧含量的影响则不大；
3
The effects of welding speed, defocusing distance, laser power, shielding gas, activating flux and activating elements on weld shape in YAG laser welding of SUS304 stainless steel was studied.