Co2 Welding Principle. It was developed at Battelle Memorial Institute in 1948. The process can be semi-automatic or automatic.
It was developed at Battelle Memorial Institute in 1948. Welding isnt just a simple task but one that requires a high level of skill along with a working knowledge of basic physics chemistry and metallurgy principles. A constant voltage direct current power source is most commonly us.
CO2 gas is supplied in order to prevent any unwanted reactions with atmospheric oxygen and nitrogen.
Electric arc between the electrode and work piece closes the electric circuit. A continuous supply of CO2 prevents any such reactions. The welding speed used for such welds is 17-25 cmmin. Gas metal arc welding sometimes referred to by its subtypes metal inert gas is a welding process in which an electric arc forms between a consumable MIG wire electrode and the workpiece metal which heats the workpiece metal causing them to fuse.