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Optimization of TIG Welding Parameters for AISI 304 Using Taguchi Technique


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1 Department of Mechanical Engineering, CBIT, Gandipet, Hyderabad, India
     

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Tungsten Inert Gas (TIG) welding is commonly used to weld thin sections of stainless steel and non-ferrous metals such as Aluminium, Magnesium, and Copper alloys. Stainless steels are widely used by many manufacturing industries for automobile parts, pressure vessels etc, due to their good corrosion resistance properties. TIG welding process grants the operator greater control over the weld than competing processes allowing for stronger, higher quality welds. Literature survey indicates that the flow rate of the inert gas, ischolar_main gap and the current are the control factors for the required bead geometry. In this work, the effect of flow rate and current on bead geometry of AISI 304 weldments is studied. The most influencing parameters are determined by the experiments carried out using L-9 orthogonal array. Results are analysed using ANOVA. Radiography is carried out, tensile and hardness test is conducted on defect free samples and the optimum parameters are obtained.

Keywords

TIG, Orthogonal Arrays, Taguchi, ANOVA.
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  • Optimization of TIG Welding Parameters for AISI 304 Using Taguchi Technique

Abstract Views: 184  |  PDF Views: 1

Authors

P. V. R. Ravindra Reddy
Department of Mechanical Engineering, CBIT, Gandipet, Hyderabad, India
P. Radhakrishna Prasad
Department of Mechanical Engineering, CBIT, Gandipet, Hyderabad, India
A. A. Sriramakrishna
Department of Mechanical Engineering, CBIT, Gandipet, Hyderabad, India
P. Prabhakar Reddy
Department of Mechanical Engineering, CBIT, Gandipet, Hyderabad, India
N. V. Srinivasulu
Department of Mechanical Engineering, CBIT, Gandipet, Hyderabad, India

Abstract


Tungsten Inert Gas (TIG) welding is commonly used to weld thin sections of stainless steel and non-ferrous metals such as Aluminium, Magnesium, and Copper alloys. Stainless steels are widely used by many manufacturing industries for automobile parts, pressure vessels etc, due to their good corrosion resistance properties. TIG welding process grants the operator greater control over the weld than competing processes allowing for stronger, higher quality welds. Literature survey indicates that the flow rate of the inert gas, ischolar_main gap and the current are the control factors for the required bead geometry. In this work, the effect of flow rate and current on bead geometry of AISI 304 weldments is studied. The most influencing parameters are determined by the experiments carried out using L-9 orthogonal array. Results are analysed using ANOVA. Radiography is carried out, tensile and hardness test is conducted on defect free samples and the optimum parameters are obtained.

Keywords


TIG, Orthogonal Arrays, Taguchi, ANOVA.