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Geometric Model of the Weld Bead in DC and Square AC Submerged Arc Welding of 2.25 Cr-1 Mo Heat Resistant Steel

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Advances in Additive Manufacturing and Joining

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

Abstract

Weld bead shape is an important feature in arc welding that governs the mechanical behavior of the joint. The weld bead is significantly influenced by the type of power source used like alternating current (AC) or direct current (DC) as they affect the extent of heat generated at the electrode and workpiece. The present study identifies a way to represent the weld bead shape through composite geometrical functions. A case of bead geometry produced using DC and AC power source in submerged arc welding of 2.25 Cr-1 Mo is presented. The direct current electrode negative (DCEN) and direct current electrode positive (DCEP) polarities in DC power source and square waveform in the AC power source are used to deposit beads using constant welding conditions (like current and speed). The macrographs of the welded sample show different geometrical approximations for weld shape in DCEP, DCEN, and AC square waveform welds. Among the different polarity, the bead shape of an AC square waveform is distinct as compared to DC polarities and shows the ability to customize deposition and penetration by changing the frequency and the electrode negative ratio.

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Acknowledgements

The authors would like to acknowledge the support of Hitachi Zosen Corporation, Japan, JWRI, Osaka University, Japan, and IIT Hyderabad, India, for providing support for this research.

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Authors and Affiliations

  1. Department of Mechanical and Aerospace Engineering, IIT Hyderabad, Sangareddy, 502285, India

    Uttam Kumar Mohanty & Abhay Sharma

  2. Technical Research Institute, Hitachi Zosen Corporation, Osaka, Japan

    Yohei Abe, Takahiro Fujimoto, Mitsuyoshi Nakatani & Akikazu Kitagawa

  3. JWRI, Osaka University, 5650871, Suita, Japan

    Manabu Tanaka & Tetsuo Suga

Authors
  1. Uttam Kumar Mohanty
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  2. Abhay Sharma
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  3. Yohei Abe
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  4. Takahiro Fujimoto
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  5. Mitsuyoshi Nakatani
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  6. Akikazu Kitagawa
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  7. Manabu Tanaka
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  8. Tetsuo Suga
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Corresponding author

Correspondence to Uttam Kumar Mohanty .

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Editors and Affiliations

  1. Manufacturing Engineering Section, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India

    M. S. Shunmugam

  2. Department of Manufacturing Engineering, College of Engineering, Guindy, Anna University, Chennai, Tamil Nadu, India

    M. Kanthababu

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Mohanty, U.K. et al. (2020). Geometric Model of the Weld Bead in DC and Square AC Submerged Arc Welding of 2.25 Cr-1 Mo Heat Resistant Steel. In: Shunmugam, M., Kanthababu, M. (eds) Advances in Additive Manufacturing and Joining. Lecture Notes on Multidisciplinary Industrial Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-32-9433-2_38

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  • DOI: https://doi.org/10.1007/978-981-32-9433-2_38

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-32-9432-5

  • Online ISBN: 978-981-32-9433-2

  • eBook Packages: EngineeringEngineering (R0)

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