Indian Journal of Science and Technology
Year: 2017, Volume: 10, Issue: 31, Pages: 1-6
Akhilesh Kumar1 , Vivek Jain1 , Dheeraj Gupta1 and Mohit Agrawal2
1Department of Mechanical Engineering, Thapar University, Patiala – 147004, Punjab India; [email protected], [email protected], [email protected] 2Department of Welding, DEE piping systems, Tatarpur – 121102, Haryana, India; [email protected]
Tungsten Inert Gas (TIG) welding is the mostly used fabrication technique used for joining stainless steel pipe in industry. By this process limited Depth of Penetration (DOP) can be achieved in a single pass. To overcome this problem, the current, speed and flow rate needs to be significantly changed and it will effect productivity. Therefore Activated TIG welding (A-TIG) is explored in the present study. The effect of hybrid mixture is evaluated in terms of DOP on AISI 304 by an automatic orbital welding setup. Hence a mathematical modelling is being done DOP by varying thickness, current, travel speed, and flow rate. A Leica microscope is used to capture the image of microstructure of weld bead. The result shows that a significant increase in DOP and width to penetration ratio by increasing the current for higher thickness after using of activated flux.
Keywords: Activated Flux, Current, Depth of penetration (DOP), Lorentz Force, Marangoni Effect, Shielding Gas, Stainless Steels, TIG welding
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