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Parametric Optimization of TIG Welding Process on Mechanical Properties of 316L Stainless Steel Using RSM

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Advances in Materials, Mechanical and Industrial Engineering (INCOM 2018)

Part of the book series: Lecture Notes on Multidisciplinary Industrial Engineering ((LNMUINEN))

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Abstract

The mechanical properties of welded joint mainly depend on the correct selection of welding process parameters. The present work has been planned to investigate the effects of process parameters such as welding current, welding speed and shielding gas flow rate on the weld joint quality for tungsten inert gas (TIG) welding of 316L austenitic stainless steel material. Experimental runs have been planned on TIG welding machine as per Box–Behnken design of response surface methodology (RSM). Based on the experimental data, the mathematical models have been developed by RSM to identify the effect of input process parameters on tensile properties. Optimization has been done to find out the most favourable welding parametric condition to achieve maximum ultimate tensile strength as well as percentage elongation of welded specimens simultaneously. Confirmatory tests have also been made at optimum parametric conditions to check/validate the accuracy of predicted welding condition. Good agreement has been identified between the predicted and measured values. The result indicates that the gas flow rate has the greatest influence on ultimate tensile strength and it is followed by welding current and travel speed. For percentage elongation, welding current is found to be the most influencing factor.

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Abbreviations

A:

Welding current (A)

B:

Welding speed (cm/min)

C:

Gas flow rate (l/min)

AISI:

American Iron and Steel Institute

ANOVA:

Analysis of variance

DF:

Degree of freedom

GFR:

Gas flow rate

PE:

Percentage elongation

RSM:

Response surface methodology

TIG:

Tungsten inert gas

UTS:

Ultimate tensile strength

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Acknowledgements

The authors would like to acknowledge Dr. D. Bose, ME Department, NITTTR, Kolkata, West Bengal, for providing welding set-up for experiment for the present research work.

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Authors and Affiliations

  1. Mechanical Engineering Department, Jadavpur University, Kolkata, India

    Subhas Chandra Moi, Asish Bandyopadhyay & Pradip Kumar Pal

Authors
  1. Subhas Chandra Moi
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  2. Asish Bandyopadhyay
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  3. Pradip Kumar Pal
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Corresponding author

Correspondence to Subhas Chandra Moi .

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Editors and Affiliations

  1. Department of Mechanical Engineering, Jadavpur University, Kolkata, West Bengal, India

    Prasanta Sahoo

  2. Department of Mechanical Engineering, University of Aveiro , Aveiro, Portugal

    J. Paulo Davim

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Moi, S.C., Bandyopadhyay, A., Pal, P.K. (2019). Parametric Optimization of TIG Welding Process on Mechanical Properties of 316L Stainless Steel Using RSM. In: Sahoo, P., Davim, J. (eds) Advances in Materials, Mechanical and Industrial Engineering. INCOM 2018. Lecture Notes on Multidisciplinary Industrial Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-96968-8_15

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  • DOI: https://doi.org/10.1007/978-3-319-96968-8_15

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-96967-1

  • Online ISBN: 978-3-319-96968-8

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