<P> Shielding gases are inert or semi-inert gases that are commonly used in several welding processes , most notably gas metal arc welding and gas tungsten arc welding ( GMAW and GTAW , more popularly known as MIG and TIG , respectively ) . Their purpose is to protect the weld area from oxygen , and water vapour . Depending on the materials being welded , these atmospheric gases can reduce the quality of the weld or make the welding more difficult . Other arc welding processes use other methods of protecting the weld from the atmosphere as well -- shielded metal arc welding , for example , uses an electrode covered in a flux that produces carbon dioxide when consumed , a semi-inert gas that is an acceptable shielding gas for welding steel . </P>
<P> Shielding gases are inert or semi-inert gases that are commonly used in several welding processes , most notably gas metal arc welding and gas tungsten arc welding ( GMAW and GTAW , more popularly known as MIG and TIG , respectively ) . Their purpose is to protect the weld area from oxygen , and water vapour . Depending on the materials being welded , these atmospheric gases can reduce the quality of the weld or make the welding more difficult . Other arc welding processes use other methods of protecting the weld from the atmosphere as well -- shielded metal arc welding , for example , uses an electrode covered in a flux that produces carbon dioxide when consumed , a semi-inert gas that is an acceptable shielding gas for welding steel . </P>
what is the purpose of argon gas in mig welding
what is the purpose of argon gas in mig welding
to protect the weld area from oxygen , and water vapour
to protect the weld area from oxygen , and water vapour