- ISSN: 2278-0149 (Online)
Short Title: Int. J. Mech. Eng. Robot. Res.
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- DOI: 10.18178/ijmerr
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Home > Articles > All Issues > 2014 > Volume 3, No. 3, July 2014 >
Analysis of Heat Affected Zone of Mild Steel Specimen Developed Due to MIG Welding
Abstract—The Gas Metal Arc Welding is the most widely used for long continuous welds also it is versatile
in nature as spot welds can also be per formed by GMAW. Process requires relatively simple
and lesser skilled labors, so it is mostly automated and once welding parameters established it
should be possible to produce repeatable welds. It is also called as MIG welding. As there is a
great influence of welding conditions on behavior of heat affected zone (HAZ) so the present
work investigates the effect of welding condition according to mechanical properties of mild
steel and presents the optimum welding condition through the evaluation about the weld ability
of mild steel by the welding conditions such as the welding passes, voltage variation, current,
variation, and change in thickness of mild steel flats. In order to find out optimum welding
condition by the mechanical properties mild steel (0.134% carbon) was selected as a specimen
having thickness 5, 8,16mm were prepared for experiment. Specimens were welded in the
range of 20-24 Volt, 130-150Amp and test pieces out of theses for test of tension, impact and
hardness and micro structure have been extracted. The experimental result revealed that with
increase in voltage there is increase in penetration so using the parameters further welding was
performed. Results show that with increase in current there is increase in hardness of HAZ and
ultimate tensile strength
Index Terms—Heat affected zone, Mild steel specimen, MIG welding
Cite: Praveen Kumar Yadav, Md Abbas and Shishir Pate, "Analysis of Heat Affected Zone of Mild Steel Specimen Developed Due to MIG Welding," International Journal of Mechanical Engineering and Robotics Research, Vol. 3, No. 3, pp. 399-404, July 2014.