Experimental study on influence of filler rods in gas Tungsten Arc welding

Advancement in manufacturing process is in progress since very old age as the human needs go on increasing. Welding is a process of joining two metal pieces by the application of heat. Welding is the least expensive process and widely used now a days in fabrication. Welding is an essential part of everyday life. From cars to high rise office buildings, airplanes to rockets, pipelines to highways, none of it would be possible without welding. It is essential for young engineers to have a very well knowledge of welding as this science has endless future with endless human needs that needs to be quenched. There are various types of welding like, Gas welding, Arc welding, resistance welding, solid state welding and few more. In this report Tungsten Inert Gas welding has been covered in detail more specifically about the filler rods used in GTAW process. There needs the skills to produce a required weld joints with precision as if lacks in quality entire structure may fails. The projects objective is to study the influence of filler rods used in TIG welding process as it considerably effects the welded structure. Various testing like hardness, bending and Nondestructive testing (NDT) have been performed for different filler rods used and influences caused by filler rods have been studied and conclusions are noted.