MINIMIZATION OF MATERIAL LOSSES OF SS 304 JOINER MADE BY TIG WELDING

Gas Tungsten Arc welding (GTAW) or Tungsten Inert Gas (TIG) is an electric arc welding process, which produces an arc between a non-consumable tungsten electrode and the work to be welded. TIG is used very commonly in areas, such as rail car manufacturing, automotive and chemical industries. Stainless steel is extensively used in industries as an important material, because of its excellent corrosion resistance. TIG welding is one of the welding processes, often used to weld similar and dissimilar metals. The major areas of research have been in characterization of weld, parameter optimization and strength of welded joints . By This paper we gives exact pair of process parameters for TIG welding i.e. current, welding speed and arc length for 0.8 mm thick ss304 material plate. Most important parameter for TIG welding is Current which increases or decreases the strength of the weld bead. Current mostly makes impact on heat generation and heat is makes impact on grain size and strength of weld bead. By using the Taguchi method it is necessary to use L9 array.it gives best pairs of parameters. Rockwell hardness test is best hardness test for checking the quality of weld bead as well as tensile test is also good for knowing strength of welding.