Study on Weld Quality Characteristics of Pulsed Current Micro Plasma Arc Welding of Inconel625 Sheets
Affiliation(s)
Department of Mechanical Engineering, Anil Neerukonda Institute of Technology & Sciences, Visakhapatnam, INDIA. Department of Mechanical Engineering, Andhra University, Visakhapatnam, INDIA. Vice Chancellor, Centurion University, Orissa, INDIA.
Department of Mechanical Engineering, Anil Neerukonda Institute of Technology & Sciences, Visakhapatnam, INDIA. Department of Mechanical Engineering, Andhra University, Visakhapatnam, INDIA. Vice Chancellor, Centurion University, Orissa, INDIA.
ABSTRACT
Nickel alloys had gathered wide acceptance in the fabrication of components which require high temperature resistance and corrosion resistance, such as metallic bellows used in expansion joints used in aircraft, aerospace and petroleum industry. In the present paper an attempt is made to study various weld quality characteristics like weld bead geometry dimensions, micro hardness, microstructure, grain size and tensile properties of Pulsed Current Micro Plasma Welding of Inconel625sheets. Weld joint was prepared by fusing the two parent metals of Inconel625 sheets. Square butt joint is used and welding was carried out using Pulsed DCEN, without filler wire. Peak current, back current, pulse and pulse width are considered as the main influential input variables during the welding.
Nickel alloys had gathered wide acceptance in the fabrication of components which require high temperature resistance and corrosion resistance, such as metallic bellows used in expansion joints used in aircraft, aerospace and petroleum industry. In the present paper an attempt is made to study various weld quality characteristics like weld bead geometry dimensions, micro hardness, microstructure, grain size and tensile properties of Pulsed Current Micro Plasma Welding of Inconel625sheets. Weld joint was prepared by fusing the two parent metals of Inconel625 sheets. Square butt joint is used and welding was carried out using Pulsed DCEN, without filler wire. Peak current, back current, pulse and pulse width are considered as the main influential input variables during the welding.
KEYWORDS
pulsed current, micro plasma arc welding, Inconel625, weld bead geometry, hardness, microstructure, grain size.
pulsed current, micro plasma arc welding, Inconel625, weld bead geometry, hardness, microstructure, grain size.
Cite this paper
K. Prasad, C. Rao and D. Rao, "Study on Weld Quality Characteristics of Pulsed Current Micro Plasma Arc Welding of Inconel625 Sheets," Journal of Minerals and Materials Characterization and Engineering, Vol. 11 No. 2, 2012, pp. 133-141. doi: 10.4236/jmmce.2012.112010.
K. Prasad, C. Rao and D. Rao, "Study on Weld Quality Characteristics of Pulsed Current Micro Plasma Arc Welding of Inconel625 Sheets," Journal of Minerals and Materials Characterization and Engineering, Vol. 11 No. 2, 2012, pp. 133-141. doi: 10.4236/jmmce.2012.112010.
References
[1] Balasubramanian.M, JayabalanV, BalasubramanianV, “ Effect of process parameters of pulsed current tungsten inert gas welding on weld pool geometry of titanium welds”, Acta Metall.Sin.(Engl. Lett.) Vol.23 No.4pp 312-320 August 2010. [2] Balasubramanian.B, Jayabalan.V, Balasubramanian.V, 2006, Optimizing the Pulsed Current Gas Tungsten Arc Welding Parameters, J Mater Sci Technol, 22(6), 821-825. [3] Madusudhana Reddy G, Gokhale A A, Prasad Rao K, 1997, Weld microstructure refinement in a 1441 grade aluminium-lithium alloy, Journal of Material Science, 32(5):4117-4126. [4] Balasubramanian.M, Jayabalan.V and Balasubramanian.V, J Mater Sci Technol 22(6) (2006) 821. [5] Zhang.D.K and Niu.J.T , 2000, Application of Artificial Neural Network modeling to Plasma Arc Welding of Aluminum alloys, Journal of Advanced Metallurgical Sciences, Vol.13, No.1, 194-200 . [6] Sheng-Chai Chi, LI-Chang Hsu ,2001, A fuzzy Radial Basis Function Neural Network for Predicting Multiple Quality characteristics of Plasma Arc Welding, IEEE,0-7803-7078-3/01,2807-2812. [7] Hsiao.Y.F, Tarng.Y.S, and Wang. J, 2008, Huang Optimization of Plasma Arc Welding Parameters by Using the Taguchi Method with the Grey Relational Analysis, Journal of Materials and Manufacturing Processes, 23, 51–58. [8] Siva.K, Muragan.N, Logesh.R, 2008, Optimization of weld bead geometry in Plasma transferred arc hardfacing austenitic stainless steel plates using genetic algorithm, Int J Adv Manuf Technol, Volume 41, Numbers 1-2,24-30. [9] LakshinarayanaA.K, Balasubramanian.V, Varahamoorthy.R and Babu.S, 2008, Predicted the Dilution of Plasma Transferred Arc Hardfacing of Stellite on Carbon Steel using Response Surface Methodology, Metals and Materials International, Vol.14, No.6, 779-789. [10] Balasubramanian.V, Lakshminarayanan.A.K, Varahamoorthy.R and Babu.S, 2009, Application of Response Surface Methodology to Prediction of Dilution in Plasma Transferred Arc Hardfacing of Stainless Steel on Carbon Steel , Science Direct, Volume 16, Issue 1,44-53. [11] Kondapalli Siva Prasad, Srinivasa Rao.Ch, Nageswara Rao.D, 2011,Prediction of weld pool geometry in pulsed current micro plasma arc welding of SS304l stainless steel sheets, International Transaction Journal of Engineering Management % Applied Sciences & Technologies, Volume 2, No.4, pp 325-336.
[1] Balasubramanian.M, JayabalanV, BalasubramanianV, “ Effect of process parameters of pulsed current tungsten inert gas welding on weld pool geometry of titanium welds”, Acta Metall.Sin.(Engl. Lett.) Vol.23 No.4pp 312-320 August 2010. [2] Balasubramanian.B, Jayabalan.V, Balasubramanian.V, 2006, Optimizing the Pulsed Current Gas Tungsten Arc Welding Parameters, J Mater Sci Technol, 22(6), 821-825. [3] Madusudhana Reddy G, Gokhale A A, Prasad Rao K, 1997, Weld microstructure refinement in a 1441 grade aluminium-lithium alloy, Journal of Material Science, 32(5):4117-4126. [4] Balasubramanian.M, Jayabalan.V and Balasubramanian.V, J Mater Sci Technol 22(6) (2006) 821. [5] Zhang.D.K and Niu.J.T , 2000, Application of Artificial Neural Network modeling to Plasma Arc Welding of Aluminum alloys, Journal of Advanced Metallurgical Sciences, Vol.13, No.1, 194-200 . [6] Sheng-Chai Chi, LI-Chang Hsu ,2001, A fuzzy Radial Basis Function Neural Network for Predicting Multiple Quality characteristics of Plasma Arc Welding, IEEE,0-7803-7078-3/01,2807-2812. [7] Hsiao.Y.F, Tarng.Y.S, and Wang. J, 2008, Huang Optimization of Plasma Arc Welding Parameters by Using the Taguchi Method with the Grey Relational Analysis, Journal of Materials and Manufacturing Processes, 23, 51–58. [8] Siva.K, Muragan.N, Logesh.R, 2008, Optimization of weld bead geometry in Plasma transferred arc hardfacing austenitic stainless steel plates using genetic algorithm, Int J Adv Manuf Technol, Volume 41, Numbers 1-2,24-30. [9] LakshinarayanaA.K, Balasubramanian.V, Varahamoorthy.R and Babu.S, 2008, Predicted the Dilution of Plasma Transferred Arc Hardfacing of Stellite on Carbon Steel using Response Surface Methodology, Metals and Materials International, Vol.14, No.6, 779-789. [10] Balasubramanian.V, Lakshminarayanan.A.K, Varahamoorthy.R and Babu.S, 2009, Application of Response Surface Methodology to Prediction of Dilution in Plasma Transferred Arc Hardfacing of Stainless Steel on Carbon Steel , Science Direct, Volume 16, Issue 1,44-53. [11] Kondapalli Siva Prasad, Srinivasa Rao.Ch, Nageswara Rao.D, 2011,Prediction of weld pool geometry in pulsed current micro plasma arc welding of SS304l stainless steel sheets, International Transaction Journal of Engineering Management % Applied Sciences & Technologies, Volume 2, No.4, pp 325-336.