INVESTIGATION OF WELD BEAD GEOMETRY OF SUBMERGED ARC WELDING USING FLUX AND SLAG ON EN-24 STEEL ALLOY

Modernization of mechanical industry has lead to the increase in demand for hard and tough materials. SAW is a unique welding method since it involves the arc which is completely submerged under the layer of granular flux. During welding, this flux that contains lime, SiO2, MnO, CaF2 and other compounds reacts with the contaminants in the molten weld metal and forms slag. Thus, slag is considered as waste material The objective of the present study will be the use of waste slag material and iron powder with the flux and to study the effect of different process parameters. The experiment has been conducted on EN24 steel alloy work piece with changing the different parameters like welding current, arc voltage & travel speed. The experimental layout is based on Taguchi design L9 orthogonal array. After that, the analysis of variance is used to analyze the results obtained from Taguchi design. After analysis of results obtained the most predominant factors for penetration is Current, rest two factors (voltage, travel speed) has less impact as compare to the current.