Welding Metal With Gas. The most common fuel gas used is acetylene. The tank is either 100 Argon or a mixture of CO2 and Argon.
An electric arc melts this wire so that it forms a weld pool that then solidifies to form a weld joint. The fumes generated in this type of welding originate from the base metal filler metal and fluxes. These normally include protecting an arc from contaminants such as dust air and other gases as well as keep the welds tidy on a base of a layer just conflicting the arc and then heating a.
This gas shields the weld as it forms.
The benefits of argon as a shielding gas include. Different Sheild Gas The different metals that can be welding with MIG do not affect the shield gas but rather would affect the flow rate. Metal Inert Gas MIG welding is an arc welding process that uses a continuous solid wire electrode heated and fed into the weld pool from a welding gun. Without the gas your welds will look brown splattered and just generally not very nice.