Gas source preparation:
The commonly used gases for handheld laser welding machines are argon//nitrogen.
Welding stainless steel: argon and nitrogen can be used. It is recommended to use argon
for welding galvanized sheet/aluminum alloy/carbon steel/copper, etc.
Argon can effectively reduce spatter and slow down the damage of the lens.
Nitrogen meter value is about 0.3
The argon gauge is about 15