Authors:-Arun Kumar Singh, Rajesh Kumar
Abstract:-Various welding process are present, among the various welding process, Tungsten inert gas (TIG) welding plays a major role in the welding of mild steel or thin sections of non-ferrous metals such as copper alloys, aluminium alloys, magnesium and stainless steel. MIG input welding parameters are the most important factors affecting the quality of the welding and weld quality is strongly characterized by weld bead geometry. The choice of the welding depends on several factors; primarily among them are the compositional range of the material to be welded, the thickness of the base materials and type of current. TIG welding has several advantage like joining of dissimilar metals, the absence of slag, low heat affected zone and etc. Since input parameters play a major role in determining the quality of a welded sample. A plan of experiments based on Taguchi technique has been used to design of experiment, acquire the data and to optimize the welding parameters as well as the process. An Orthogonal array and analysis of variance (ANOVA) are employed to investigate the welding characteristics of alloy Steel material and predict the welding parameters. Properties are Hardness, Tensile strength etc. are taken as responses of input parameter. Finally the comparison tests have been carried out to compare for given alloy steel with the ANOVA values for prediction of parameter its effectiveness in the analysis of penetration.
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