INFLUENCE OF SHIELDING MEDIUM ON DEPOSITION RATE IN ARC-WELDING

The aim of this paper was to determine the influence of the shielding medium and the type of welding flux on the deposition I ate in are wel ding. Previous studies have stated that the shielding medium has no in fluence on deposition rate and a number of mathematical models derived by previous authors confirm this. In the present work it was found th at a larger quantity of material was deposited when using helium, argo n, or CO2 as shielding. With constant wire feedrate and constant power ; are current was lowest with helium; shielding and highest with argon shielding; with just wire feedrate constant, arc power was lowest wit h helium and CO2 shielding and highest with basic Pur. It was also fou nd that are welding efficiency was highest for helium shielding and lo west for submerged are welding with basic flux.