Abstract
The current investigation was carried out to study the effect of vibratory welding technique on mechanical properties of 6 mm thick butt welded mild steel plates. A new concept of vibratory welding technique has been designed and developed which is capable to transfer vibrations, having resonance frequency of 300 Hz, into the molten weld pool before it solidifies during the Shielded metal arc welding (SMAW) process. The important process parameters of vibratory welding technique namely welding current, welding speed and frequency of the vibrations induced in molten weld pool were optimized using Taguchi’s analysis and Response surface methodology (RSM). The effect of process parameters on tensile strength and hardness were evaluated using optimization techniques. Applying RSM, the effect of vibratory welding parameters on tensile strength and hardness were obtained through two separate regression equations. Results showed that, the most influencing factor for the desired tensile strength and hardness is frequency at its resonance value, i.e. 300 Hz. The micro-hardness and microstructures of the vibratory welded joints were studied in detail and compared with those of conventional SMAW joints. Comparatively, uniform and fine grain structure has been found in vibratory welded joints.
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S. Deepak Kumar is an Assistant Professor in Manufacturing Engineering Department, National Institute of Technology, Jamshedpur, India. He has completed his Ph.D. from Indian Institute of Technology, Bhubaneswar. His research area of interest is Advance manufacturing processes and computational designing.
Pravin Kumar Singh is a Ph.D. student at the Department of Manufacturing Engineering, National Institute of Technology, Jamshedpur, India doing research on vibratory welding technology. He received his M.Tech. from SLIET, India in 2011.
D. Patel is an Assistant Professor in Manufacturing Engineering department, National Institute of Technology, Jamshedpur, India. He has completed his Ph.D. from Ranchi University, India. His research interest includes Industrial engineering, Welding, Fuzzy system, and Production technology.
S. B. Prasad is an Associate Professor in Manufacturing Engineering Department, National Institute of Technology, Jamshedpur, India. He has completed his Ph.D. from IIT Roorkee, India. His research interest includes solar energy, Machine design, Welding metallurgy and Energy management.
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Singh, P.K., Kumar, S.D., Patel, D. et al. Optimization of vibratory welding process parameters using response surface methodology. J Mech Sci Technol 31, 2487–2495 (2017). https://doi.org/10.1007/s12206-017-0446-0
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DOI: https://doi.org/10.1007/s12206-017-0446-0