Co2Welding Procedure - The various steps involved are as follows:
(1) Correct edge preparation and joint fit up.
(2) Joint surfaces to be cleaned of rust, scale, grease or any other foreign matter.
(3) Assembling the welding equipment and setting the welding parameters.
(4) Selecting correct gun nozzle size.
(5) Setting electrode extension on the basis whether short-circuiting or spray type welding is to be done.
(6) Turning on the carbon-di-oxide gas supply to remove air from the hoses and then setting CO2 flow rate as per base metal and joint design.
