http://www.iaeme.com/IJMET/index.asp 332 editor@iaeme.com International Journal of Mechanical Engineering and Technology (IJMET) Volume 8, Issue 10, October 2017, pp. 332–341, Article ID: IJMET_08_10_037 Available online at http://www.iaeme.com/IJMET/issues.asp?JType=IJMET&VType=8&IType=10 ISSN Print: 0976-6340 and ISSN Online: 0976-6359 © IAEME Publication Scopus Indexed EFFECT OF PARAMETER INTERACTIONS ON HYBRID TIG-MAG ARC WELDING PROCESS Onkar. S. Sahasrabudhe Department of Mechanical Engineering, Pillai College of Engineering, University of Mumbai, India Dr. D. N. Raut, Dr. D. K. Shinde Department of Production Engineering, Veermata Jijabai Technological Institute (VJTI), Mumbai, India ABSTRACT This study is an attempt to study Hybrid TIG-MAG arc welding process basis interactions of the process controlling parameters with reference to the depth of weld penetration and the transverse tensile strength of the welded joint as the process outcome. Experiments are conducted for the outcome using an indigenous hybrid arc welding fixture and the results are studied by superimposing the response surfaces to arrive at the common optimum of the interacting process parameters for the 12mm thick mild steel plates. The convergence obtained is further validated through interlinked experimental iterations. Key words: Hybrid Arc Welding, Welding Fixture, GMAW, GTAW, Design of Experiments (DOE), Response Surface Methodology (RSM). Cite this Article: Onkar. S. Sahasrabudhe, Dr. D. N. Raut and Dr. D. K. Shinde, Effect of Parameter Interactions on Hybrid TIG-MAG Arc Welding Process, International Journal of Mechanical Engineering and Technology 8(10), 2017, pp. 332–341. http://www.iaeme.com/IJMET/issues.asp?JType=IJMET&VType=8&IType=10 1. INTRODUCTION Arc welding uses the electro-magnetic avalanche as the heat source i.e. the electric arc. The arc struck would either be with a consumable electrode or with a non-consumable electrode. The hybridization i.e. the introduction of two electric arcs in a synergistic manner could well prove to be an answer if it collectively answers the limitations of the conventional arc welding such as arc stability, preheating of the joint, heat input to the base metal and the defect prone metal transfer. Once proved, the hybridized alternative could be developed to simultaneously increase the productivity and the quality of the process. For the metal joining of mild steel plates up to 3mm of thickness or less, Yu Ming Zhang et al [1] and YShi et al [2] have discussed such studies for DE-GMAW i.e. Double Electrode Gas Metal Arc Welding wherein the total heat input to the base metal has been reduced by the introduction of a second non- consumable electrode to partially bypass the GMAW arc current.