Submerged Arc Welding a Review Paper

Abstract

Abstract-Submerged Arc welding process is automated and semiautomated high deposition down hand welding process not vertical or over welding process, The fundamental difference of this welding process is that the Arc is not visible it is submerged into the flux. Weldment is fully submerged the heat loss is minimum and the thermal efficiency is very high up to 80-90%. A constant power sources and control is required because of wire feed speed control, constant voltage power supplies, digital control which provides the precise control of welding process. submerged arc welding self wire feed mechanism is used in which the flux is supply from hopper a continuous fed electrode work piece to melt the metal into the joint area and provide additional filler metal under a blanket of granular flux. This method is suitable for butt welding and fillet welding such applications as structural members in ships, Pressure vessels, Bridge beam, Massive water pipes, Penstocks, boiler, Railroad, Automobile, Aviation and Nuclear Industries, etc. Welding parameters influence the size of the weld bead and the Heat affected zone (HAZ) differently and this is attributed to the way these parameters affect the various melting efficiencies.