Indian Welding Journal

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Arc Behavior Study Using Welding Current Module and its Impact on Residual Stress and Weld Bead in Anti-Phase Synchronized Twin-Wire Gas Metal Arc Welding


Affiliations
1 Department of Mechanical & Aerospace Engineering, Indian Institute of Technology, Hyderabad- 502285, India
     

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The importance of twin-wire welding in increasing the deposition rate is known for a long, but its application in gas metal arc welding is limited due to the arc-stability related issues. An unstable welding arc causes irregular weld bead and material loss in the form of spatters. Previous investigations indicate that the problem can be addressed through arc-stability induced by dissimilar twin-arcs as the electromagnetic field concentrates around the arc with higher current. The present study is intended to reduce the twin-arcs' interactions and to improve the arc stability in twin-wire gas metal arc welding by evaluating different conditions at lead and trail wires. Further, their influence on the residual stresses and weld bead geometry is studied. Bead-on-plate-welds are carried out. A data acquisition system is used to capture the electrical signals during welding. The results indicate that the unequal currents at trail and lead wires provide stability to the arc that also results in a shift in residual stresses from compressive to tensile along the weld transverse direction. In addition, the maximum residual stress is located at the weld toe. When the current difference between the trail and lead wire is more, the arc produces stable metal transfer with uniform heating and cooling that results in reduction in stresses and improvement in weld quality.


Keywords

Twin-Wire GMAW, Heat Input, Residual Stresses, Weld Bead Geometry.
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  • Tekriwal P and Mazumder J (1991); Transient and residual thermal strain-stress analysis of GMAW, J. Eng. Mater. Technol, Trans. ASME, 113(3), pp. 336-343.

  • Choi J and Mazumder J (2002); Numerical and experimental analysis for solidification and residual stress in the GMAW process for AISI 304 stainless steel, J. Mater. Sci. 37(10), pp. 2143-2158.

  • Davoud MS and Deng X (2004); Finite element modeling of GMAW process: evolution and formation of residual stresses UPON cooling, ASME, HTD, 375(3), IMECE200459241, pp. 371-377.

  • Ghosh PK and Ghosh AK (2004); Control of residual stresses affecting fatigue life of pulsed current gasmetalarc weld of high-strength aluminum alloy, Metall. Mater. Trans. A: Phys Metal. Mater. Sci., 35 A(8), pp. 2439-2444.

  • Bajpei T, Chelladurai H and Ansari MZ (2016); Mitigation of residual stresses and distortions in thin aluminum alloy GMAW plates using different heat sink models, J Manuf Process, 22, pp. 199-210.

  • Bajpei T, Chelladurai H and Ansari MZ (2016); Numerical Investigation of Transient Temperature and Residual Stresses in Thin Dissimilar Aluminium Alloy Plates, Procedia Manuf., 5, pp. 558-567.

  • Armentani E, Esposito R and Sepe R (2007); The influence of thermal properties and preheating on residual stresses in welding, Int J Comput Mater Sci Surf Eng., 1(2), pp. 146-162.

  • Sepe R, Armentani E, Lamanna G and Caputo F 2015; Evaluation by FEM of the influence of the preheating and post-heating treatments on residual stresses in welding, Key Eng Mater, 627, pp. 93-96.

  • Anis M and Winarto (2011); Effect of plate thickness and weld position on distortion and residual stress of welded structural steel, Mater Sci Forum, 689, pp. 296-301.

  • Dixneit J, Kromm A, Hannemann A, Friedersdorf P, Kannengiesser T and Gibmeier J (2016); In-situ load analysis in multi-run welding using LTT filler materials, Welding in the World, 60(6), pp. 1159-1168.

  • Schroepfer D and Kannengiesser T (2016); Stress buildup in HSLA steel welds due to material behavior, J Mater Process Technol, 227,14507, pp. 49-58.

  • Costa ES, Assunçao PDC, Dos Santos EBF, Feio LG, Bittencourt MSQ and Braga E.M. (2017); Residual stresses in cold-wire gas metal arc welding, Sci Technol Weld Joining, 22(8), pp. 706-713.

  • Moinuddin SQ and Sharma A (2015); Arc stability and its impact on weld properties and microstructure in antiphase synchronized synergic-pulsed twin-wire gas metal arc welding, Mater. Des., 67, pp. 293-302.

  • Meng QG, Fang HY, Yang JG and Ji SD (2005); Analysis of temperature and stress field in Al alloys twin-wire welding, Theoretical Appl Frac Mech., 44(2), pp. 178186.

  • Lu H, Liu XS, Yang JG, Zhang SP and Fang HY (2008); Ultrasonic stress evaluation on welded plates with Lcr wave, Sci. Technol Weld Joining, 13(1), pp. 70-74.

  • Estefen SF, Gurova T, Castello X and Leontiev A (2010); Surface residual stress evaluation in double-wire buttwelded steel plates, Mater. Des., 31(3), pp. 1622–1627.

  • Xiuzhi Y, Wanjing D, Jinyu J and Xinhua X (2012); The Change of Residual Stress with Two-wire Spacing of Twin-wire Submerged Arc Welding, Adv Mat Res, 462, pp. 154-159.

  • Paradowska AM, Larkin N, Li H, Shen C and Law M (2014); Neutron diffraction residual stress measurements of welds made with pulsed tandem gas metal arc welding (PT-GMAW), Powder Diffr., 29, pp. S24-S27.

  • Sharma A, Arora N and Gupta SR (2010); Investigation into arc behavior during twin-wire submerged arc welding, Mater. Manuf. Process., 25 (8), pp. 873–879.


Abstract Views: 355

PDF Views: 6




  • Arc Behavior Study Using Welding Current Module and its Impact on Residual Stress and Weld Bead in Anti-Phase Synchronized Twin-Wire Gas Metal Arc Welding

Abstract Views: 355  |  PDF Views: 6

Authors

Syed Quadir Moinuddin
Department of Mechanical & Aerospace Engineering, Indian Institute of Technology, Hyderabad- 502285, India
Abhay Sharma
Department of Mechanical & Aerospace Engineering, Indian Institute of Technology, Hyderabad- 502285, India

Abstract


The importance of twin-wire welding in increasing the deposition rate is known for a long, but its application in gas metal arc welding is limited due to the arc-stability related issues. An unstable welding arc causes irregular weld bead and material loss in the form of spatters. Previous investigations indicate that the problem can be addressed through arc-stability induced by dissimilar twin-arcs as the electromagnetic field concentrates around the arc with higher current. The present study is intended to reduce the twin-arcs' interactions and to improve the arc stability in twin-wire gas metal arc welding by evaluating different conditions at lead and trail wires. Further, their influence on the residual stresses and weld bead geometry is studied. Bead-on-plate-welds are carried out. A data acquisition system is used to capture the electrical signals during welding. The results indicate that the unequal currents at trail and lead wires provide stability to the arc that also results in a shift in residual stresses from compressive to tensile along the weld transverse direction. In addition, the maximum residual stress is located at the weld toe. When the current difference between the trail and lead wire is more, the arc produces stable metal transfer with uniform heating and cooling that results in reduction in stresses and improvement in weld quality.


Keywords


Twin-Wire GMAW, Heat Input, Residual Stresses, Weld Bead Geometry.

References





DOI: https://doi.org/10.22486/iwj%2F2019%2Fv52%2Fi1%2F178188