OVAT Analysis for Improving Weld Quality in MIG Welding

OVAT Analysis for Improving Weld Quality in MIG Welding
Authors : Milind M. Ghogale, Prof. S. A. Patil
Publication Date: 01-08-2014


Author(s):  Milind M. Ghogale, Prof. S. A. Patil

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Vol. 3 - Issue 8 (August - 2014)

e-ISSN:   2278-0181


Quality of a weld is depends on welding input parameters. Weld penetration depth is one of the prime requirements of welded parts. The purpose of this research paper is focused on the analysis of MIG welding process parameters to get highest penetration in weld by regression analysis. This paper presents an OVAT (One Variable at a Time) analysis to investigate the effects of welding parameters like current, voltage, gas flow, Fixture Rotation speed and Wire feed rate on penetration on lever shaft. In any manufacturing industry, MIG welding is one of the most important and effectively used manufacturing method.. In today’s manufacturing scenario, optimization of welding process is essential for a manufacturing unit to respond effectively to severe competitiveness and increasing demand of quality, which has to be achieved at minimal cost. In this investigation, an effective approach is based on OVAT .It has been developed to determine the optimum conditions to get highest penetration in welding. Experiments were conducted by varying current, voltage, gas flow, fixture rotation speed and wire feed rate on penetration using OVAT method. Experimental results from this are used for fixing the optimum parameters to get the high penetration. The relationship between process parameters and penetration depth. The experiment was conducted on “Lever Complete Gear Shaft Assembly” of Bajaj auto two wheeler . From the investigation it concludes that Current is most influencing parameter followed by Voltage and Gas flow on Penetration.


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