Optimizing Arc Welding Process Parameters Using Taguchi Technique

Welding is a basic manufacturing process for making components or assemblies in industries. Recent welding economics research has focused on developing the reliable machinery database to ensure optimum design. There are many welding parameters whose selection contributes to the welded product as they all affect the strength and quality to a larger extent. Some of them are material, welding rod, diameter of electrode, weld design Root face, and Root gap. In this research, welding input process parameters have been optimize for greater weld strength in Electric arc welding. Metal like mild steel (1018), carbon steel (1020) and alloy steel (4130) are presented as a study material and welding rod and voltage of current are the other two parameter for the T-joint welding.. After this theses welds are tested for bending strength on universal testing machine. The Taguchi methodology is adopted to analyze the effect of each welding process parameter on the weld strength, and the optimal process parameters are obtained to achieve greater weld strength. The study includes selection of parameters, utilizing an orthogonal array, conducting experimental runs, data analysis, determining the optimum combination. Finally the experimental verification has been done. Experimental results are provided to illustrate the proposed approach. Finally we derived a mathematical model for breaking load for bending with the help of MATLAB software. After the whole work comparative analysis of results from different theories has been done in which we found that all results are approximately similar. Hence author concluded that the values of parameters can be selected for other vital experiment on the basis of mathematical model generated by this research.