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.
Because helium is a very light gas, higher flow rates must be used for effective shielding. This characteristic is. beneficial in overhead welding. Carbon dioxide: is widely used for steels. Higher welding speed, better joint penetration and sound deposits with good. mechanical properties can be achieved. Carbon dioxide is not an inert gas as the argon and helium and breaks down. into carbon monoxide and free oxygen under the heat of the arc.