Influence of Welding Parameters on Strength of Metal Inert Gas Welded Mild Steel Joints

Authors

  • Washington Odhiambo Obura * Department of Mechanical and Mechatronics Engineering, Faculty of Engineering, Multimedia University of Kenya, Nairobi, Kenya. https://orcid.org/0009-0007-5162-0567
  • Abel N. Mayaka Department of Mechanical and Mechatronics Engineering, Faculty of Engineering, Multimedia University of Kenya, Nairobi, Kenya.
  • Charles Ondieki Department of Mechanical and Mechatronics Engineering, Faculty of Engineering, Multimedia University of Kenya, Nairobi, Kenya.

https://doi.org/10.48314/apem.vi.45

Abstract

Metal Inert Gas (MIG) welding is a type of arc welding that uses a continuous solid wire electrode and a shielding gas to join two metals by heating them with an electric arc. We studied process parameters including current, voltage, preheat temperature, and post-weld heat treatment. We optimize process parameters of experiments done in previous work using a Taguchi Orthogonal Array (L27) design. A grey-based Taguchi method is used to optimize the process parameters. The Analysis of Variance (ANOVA) is applied to assess the significance of the input parameters on the response parameters. A mathematical model is developed using Multiple Linear Regression (MLR) equations. The results of this research show that it is possible to achieve higher strengths in weld joints using Taguchi design. We also find that increasing current (I) and Post-Weld heat Treatment (PWT) temperature increases the strength of the studied welded joints, and vice versa. Future research should validate the findings of the current study through experimental investigations.

Keywords:

Weld parameters, Optimization, Taguchi relational analysis, Metal inert gas welding

Author Biography

  • Abel N. Mayaka, Department of Mechanical and Mechatronics Engineering, Faculty of Engineering, Multimedia University of Kenya, Nairobi, Kenya.

     

     

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Published

2025-10-23

Issue

Vol. 2 No. 4 (2025): Annals of Process Engineering and Management

Section

Articles

How to Cite

Obura, W. O., Mayaka, A. N., & Ondieki, C. (2025). Influence of Welding Parameters on Strength of Metal Inert Gas Welded Mild Steel Joints. Annals of Process Engineering and Management, 2(4), 211-225. https://doi.org/10.48314/apem.vi.45

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