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Development of a Direct Correlation of Bead Geometry, Grain Size and HAZ Width with the GMAW Process Parameters on Bead-on-plate Welds of Mild Steel

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Abstract

In this study, an experimental work was conducted to correlate the effect of gas metal arc welding (GMAW) process parameters such as wire feed speed, voltage, and contact tip to work piece distance along with interactive variables on bead-on-plate weld characteristics using multiple linear regression analysis and ANOVA (analysis of variance). The different responses such as convexity index, depth of penetration, reinforcement area, deposition rate, width of heat affected zone (HAZ), weld metal grain size and HAZ grain size were studied. The aim of the present investigation is to develop multiple linear regression equations to predict different responses (outputs) as a function of multiple input variables for ‘bead-on-plate’ type GMAW process. Multiple linear regression equations were first developed for weld bead geometry as a function of several individual and interactive variables. Then an effort was made to effectively predict the grain structure of the weldments as a function of multiple variables. Predicted responses are very close and sometime superimposed on the actual responses which clearly indicate the adequacy of the regression equations.

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Acknowledgments

The authors would like to thank all the Research scholars of Welding Technology Centre, Metallurgical and Material Engineering Department, Jadavpur University and also to Dr. Dipak Kumar Mondal, H.O.D. Mechanical Engineering Department, college of Engineering & Management, Kolaghat; for their valuable support.

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Authors and Affiliations

  1. Mechanical Engineering Department, College of Engineering and Management, Kolaghat, India

    Deb Kumar Adak

  2. Metallurgical and Material Engineering Department, Jadavpur University, Kolkata, India

    Manidipto Mukherjee & Tapan Kumar Pal

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  1. Deb Kumar Adak
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  2. Manidipto Mukherjee
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  3. Tapan Kumar Pal
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Correspondence to Deb Kumar Adak.

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Adak, D.K., Mukherjee, M. & Pal, T.K. Development of a Direct Correlation of Bead Geometry, Grain Size and HAZ Width with the GMAW Process Parameters on Bead-on-plate Welds of Mild Steel. Trans Indian Inst Met 68, 839–849 (2015). https://doi.org/10.1007/s12666-015-0518-8

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  • DOI: https://doi.org/10.1007/s12666-015-0518-8

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