ARC Welding is Filler wire itself make a arc & fused to the base metal the flux coating helps to shield the welded object with CO2. ,The current setting will vary may be more than tungsten Arc welding.
Argon Welding tungsten is striking the Arc with Base Metal filler wire is melted in the Arc melted to Weldments metals. Argon making a shielding the Weldments. Welding will be precession better than Arc welding. It is expensive.
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