Shielding gases are inert or semi-inert gases that are commonly used in several welding processes(gas metal arc welding and gas tungsten arc welding ).
protect the weld area from oxygen, and water vapour and improve the quality of the weld or make the welding smoothly.
Improper choice of a welding gas can lead to a porous and weak weld, or to excessive spatter.
Only two of the noble gases, helium and argon, are cost effective enough to be used in welding.
Semi-inert shielding gases, or active shield gases, include carbon dioxide, oxygen, nitrogen, and hydrogen.
Most of these gases, in large quantities, would damage the weld, but when used in small, controlled quantities, can improve weld characteristics.
protect the weld area from oxygen, and water vapour and improve the quality of the weld or make the welding smoothly.
Improper choice of a welding gas can lead to a porous and weak weld, or to excessive spatter.
Only two of the noble gases, helium and argon, are cost effective enough to be used in welding.
Semi-inert shielding gases, or active shield gases, include carbon dioxide, oxygen, nitrogen, and hydrogen.
Most of these gases, in large quantities, would damage the weld, but when used in small, controlled quantities, can improve weld characteristics.
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