Jennifer Bourn. This post is part of the Color Meaning Blog Series, detailing the meanings associated with colors such as red, orange, yellow, green, blue, purple, grey, black, white, brown, pink, turquoise, gold, silver, and beige.
Instructions. Know what metal you are welding. Welders have figured out that nitrogen, as well as hydrogen, works well with stainless steels. If your metal is stainless steel, then nitrogen welding gas is a good choice. Put on your protective gear. This includes gloves, a welding jacket and a welding mask.
Argon is a major component of shielding gas when spraylike, high-productivity welding is desired in GMAW or FCAW for joining steel and stainless steel. Helium. Helium is considerably lighter than air, which means higher flow rates are required than for argon or carbon dioxide.