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

Author

Listed:
  • Washington Odhiambo Obura
  • Prof. (Eng.) Abel N. Mayaka
  • Prof. Charles M. Ondieki

Abstract

Purpose: 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. Process parameters including current, voltage, preheat temperature and post-weld heat treatment were studied. Then, optimize process parameters of experiments done in previous work using a Taguchi Orthogonal Array (L27) design. Methodology: 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 equations. Findings: Results of this research show that it is possible to get higher strengths of weld joints using Taguchi design. Increasing current (I) and post-weld heat treatment temperature (PWT) increases strength of the studied welded joints, and vice versa. Unique contribution to theory, policy and practice: Future research should validate the findings of the current research through experimental investigations.

Suggested Citation

  • Washington Odhiambo Obura & Prof. (Eng.) Abel N. Mayaka & Prof. Charles M. Ondieki, 2024. "Influence of Welding Parameters on Strength of Metal Inert Gas Welded Mild Steel Joints," International Journal of Computing and Engineering, CARI Journals Limited, vol. 5(5), pages 9-21.
    • Handle: RePEc:bhx:ojijce:v:5:y:2024:i:5:p:9-21:id:1928
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    File URL: https://carijournals.org/journals/index.php/IJCE/article/view/1928/2306
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