Finite-element Simulation of Heat Transfer in Electroslag Welding

Document Type : Research Article

Authors

1 Department of Materials and Metallurgical Engineering, Amirkabir University of Technology

2 Department of Materials and Metallurgical Eng., Amirkabir University of Technology, Tehran, Iran

Abstract

Electroslag welding is widely used in column joints. However, the process of electroslag welding has a higher heat input than other welding processes, which results in dramatic changes in microstructure and mechanical properties, especially grain size and toughness. These connections are very vulnerable when subjected to dynamic loads and earthquakes. Therefore, the study of heat transfers and its effect on the mechanical properties of these joints is important. Considering the importance of this, in the present study, a finite element model is proposed to study the thermal behavior of this process, then the accuracy of the model is measured according to the practical experiments of the microcontroller. For verification, several practical examples of welding were performed and then, to evaluate the size of the pit pool, welded sections of the macrovar were prepared to confirm the assumptions of the model. In the next step, the validated model is used to study the thermal behavior of the system and the distribution of temperature according to the variables of current, voltage and speed. In this regard, due to the complexity of the process, it is not possible to carry out all simulations with software menus, so much of the simulation was written with the language of the ANSYS software.

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References

[1] W. Ricci, T. Eagar, A parametric study of the electroslag welding process,Welding Research Supplement, 61(12) (1982) 397s-400s.
[2] K.E. Banks, Welding electrode with a fluoride based slag system, Google Patents, 1982.
[3] A. Kharicha, E. Karimi-Sibaki, M. Wu, A. Ludwig, J. Bohacek, Review on Modeling and Simulation of Electroslag Remelting,steel research international, 89(1) (2018) 1700100.
[4] T. Roy, J. Szekely, T. Eagar, Mathematical modeling of the temperature profiles and Weld dilution in electroslag welding of steel plates,Modeling of casting and welding processes,  (1980) 197-212.
[5] S. Chen, J. Devletian, Microstructure and mechanical properties of electroslag welds in TI-6AL-4V alloy, Welding Journal, 69(9) (1990) 319-325.
[6] D. Deng, S. Kiyoshima, Numerical simulation of welding temperature field, residual stress and deformation induced by electro slag welding,Computational Materials Science, 62 (2012) 23-34.
[7] T. Kakizaki, S. Koga, H. Yamamoto, Y. Mikami, K. Ito, K. Yamazaki, S. Sasakura, H. Watanabe, Microstructure features and formation mechanism in a newly developed electroslag welding,Welding in the World,  (2022) 1-12.
[8] A. Dilawari, J. Szekely, T. Eagar, Electromagnetically and thermally driven flow phenomena in electroslag welding,Metallurgical Transactions B, 9 (1978) 371-381.
[9] A. Dilawari, T. Eagar, J. Szekely, Analysis of Heat and Fluid Flow Phenomena in Electroslag Welding,Welding journal, 57(1) (1978) 24.
[10] H.K. Parmar, G. Acharya, S. Jani, Failure Analyses of 16 mm Thick SA 516 GR 70 Auto Clave,Technology, 12(1) (2022) 21-30p.
[11] K. Roy, P. Ramkumar, Finite element analysis of pressure vessel with different end connections, in:  AIP Conference Proceedings, AIP Publishing, 2024.
[12] J. Iyama, Y. Matsumoto, T. Ishii, H. Shimokawa, M. Nikaido, S. Yamada, Fracture strength of electroslag welding joint with high-performance steel,Journal of Constructional Steel Research, 153 (2019) 495-508.
[13] J. Goldak, A. Chakravarti, M. Bibby, A new finite element model for welding heat sources,Metallurgical transactions B, 15 (1984) 299-305.
[14] E. Ranjbarnodeh, S. Serajzadeh, A.h. Kokabi, S. Hanke, A. Fischer, Finite element modeling of the effect of heat input on residual stresses in dissimilar joints,The International Journal of Advanced Manufacturing Technology, 55 (2011) 649-656.
[15] H. Li, J. Iyama, Investigation on Fracture Behavior of Electroslag Welding Joint with High-Performance Steel,International Journal of Steel Structures,  (2024) 1-10.
[16] K. Masubuchi, Analysis of welded structures: residual stresses distortion and their consequences, Elsevier, 2013.
[17] E. Ranjbarnodeh, ANSYS for Welding Engineers, Amirkabir University of Technology, 2018 (In Persian).
[18] A. A516/A516M-01, Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate and Lower Temperature Service, (2001).
[19] A.h. Kokabi, Welding Technology, Azadeh Publication, 2013 (In Persian).
[20] R. Conte, D.R. Izquierdo, G. Francesco, Submerged arc welding process: a numerical investigation of temperatures, displacements, and residual stresses in ASTM A516-Gr70 corner joined samples,The International Journal of Advanced Manufacturing Technology, 127(11) (2023) 5437-5448.
Amirkabir Journal of Mechanical Engineering
Volume 56, Issue 8
2024
Pages 1121-1136

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