Study and Empirical Modeling Relating Welding Parameters and Mechanical Properties of Metal Inert Gas Welded SS304 and C28 Plate

International Journal of Research and Scientific Innovation (IJRSI) | Volume V, Issue VI, June 2018 | ISSN 2321–2705

Study and Empirical Modeling Relating Welding Parameters and Mechanical Properties of Metal Inert Gas Welded SS304 and C28 Plate

Rakesh Baranwal¹, Om Prakash Tiwari², Sandeep Kumar Gupta³, Vivek Naraian⁴

^{1, 2}Department of Mechanical Engineering, GIMT, Lucknow, Uttar Pradesh, India
³Department of Mechanical Engineering, BBDEC, Lucknow, Uttar Pradesh, India
⁴Department of Mechanical Engineering, BBDNITM, Lucknow, Uttar Pradesh, India

Abstract: The present work deals with optimization of welding process variables by using regression analysis. Stainless Steel AISI SS304 was welded to AISI C-28 carbon steel using a metal inert gas welding which also known as gas metal arc welding with the help of filler wire of stainless steel. The effect of welding current, welding speed and gas flow rate has been evaluated on the Tensile Strength, of the butt weld bead deposited. These responses have been analyzed using the analysis of variance (ANOVA) and empirical modeling. Plots of significant factors and empirical modeling have been used to determine the best fit relationship between the responses and the model parameters using MINITAB 15. This has been used to determine which is the most influencing factor or parameter. The weld tensile strength has been found to increase with decrease of welding current and gas flow rate.

Keywords: Welding of Dissimilar metal, Metal inert gas welding, Empirical Modeling, and tensile strength of weld bead, ANOVA technique.

I.INTRODUCTION

Gas Metal Arc Welding (GMAW), sometimes referred to by its subtypes Metal Inert Gas (MIG) welding or Metal Active Gas (MAG) welding, is a semi-automatic or automatic 0020 Arc welding process in which a continuous and consumable wire electrode and a shielding gas are fed through a welding gun. A constant voltage, direct current power source is most commonly used with GMAW, but constant current systems, as well as alternating current, can be used. Gas metal arc welding is one of the conventional and traditional methods to join materials. A wide range of materials may be joined by Gas metal arc welding—similar metals, dissimilar metals, alloys, and nonmetals. In the present scenario demand of the joining of similar materials continuously increases due to their advantages, which can produce high yield strength, deeper penetration, continuous welding at higher speed and small welding defects.

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