Optimization of Gas Metal Arc Welding (GMAW) Parameters for Minimum Distortion of T Welded Joints of A36 Mild Steel by Taguchi Method

Abstract:

In this study, the GMAW parameters for welding of A36 mild steel have been investigated to get the minimum of distortion. The type of welded joint used was square groove T-joint fillet weld with filler wire ER70S-6. The welding current and the welding speed were selected as input parameters while the response used was distortion (longitudinal bending distortion and angular distortion). Taguchi method was used to determine optimal welding parameters which the minimum distortion. Design of experiment was set two factors with three level in each factor and three replication, so the L₉ Taguchi’s orthogonal array was applied. The minimum conditions were determined using S/N ratio with a quality character of smaller is better (SB). In addition, to determine the significance of the welding parameters used ANOVA. The results show that the welding current of 170 A and the welding speed of 4.0 mm/s were obtained as the minimum of longitudinal bending distortion and angular distortion. Based on analysis of variance, the welding current was a parameter that greatly affects the longitudinal bending distortion with the percentage contribution of 64.36% while angular distortion was strongly influenced by welding speed parameter with the percentage contribution of 53.38%.

• Periodical: Materials Science Forum (Volume 1000)
• Pages: 356-363
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1000.356
• Online since: July 2020
• Authors: Ario Sunar Baskoro*, Rafdi Hidayat, Agus Widyianto, Muhammad Azwar Amat, Danurengga Ubaszti Putra
• Keywords: Distortion, GMAW, Taguchi Method, T-Joint

References

[1] Y. Yu, et al., Effect of heat treatment process on the mechanical properties of Ti-Al-Sn-Zr-Mo-Si-X series alloys. Heat Treatment of Metals(China). 30(12) (2005) 68-71.

[2] J.-S. Kim, et al., A failure analysis of fillet joint cracking in an oil storage tank. Journal of Loss Prevention in the Process Industries. 22(6) (2009) 845-849.

DOI: 10.1016/j.jlp.2009.08.014

[3] G. Fu, et al., Effect of material model on residual stress and distortion in T-joint welding. Ships and Offshore Structures. 13(1) (2018) 56-64.

DOI: 10.1080/17445302.2017.1342894

[4] D. Deng, W. Liang, and H. Murakawa, Determination of welding deformation in fillet-welded joint by means of numerical simulation and comparison with experimental measurements. Journal of Materials Processing Technology. 183(2-3) (2007) 219-225.

DOI: 10.1016/j.jmatprotec.2006.10.013

[5] K. Kimapong and T. Watanabe, Friction stir welding of aluminum alloy to steel. Welding journal. 83(10) (2004) 277.

[6] K. Kimapong and S. Triwanapong. Microstructure and Bending Strength of Dissimilar SS400/SUS304 Steels T-Fillet Joint by Gas Metal Arc Welding. in Key Engineering Materials. 2018. Trans Tech Publ.

DOI: 10.4028/www.scientific.net/kem.773.189

[7] Y. Jie, et al., Effect of welding current on morphology and microstructure of Al alloy T-joint in double-pulsed MIG welding. Transactions of Nonferrous Metals Society of China. 25(10) (2015) 3204-3211.

DOI: 10.1016/s1003-6326(15)63953-x

[8] S. Pal, et al., Optimization of quality characteristics parameters in a pulsed metal inert gas welding process using grey-based Taguchi method. The International Journal of Advanced Manufacturing Technology. 44(11-12) (2009) 1250-1260.

DOI: 10.1007/s00170-009-1931-0

[9] N. Ma, et al., Welding distortion and inherent deformation under temporary tacking and its released states. Science and Technology of Welding and Joining. 21(5) (2016) 389-396.

DOI: 10.1080/13621718.2015.1123443

[10] K. Tseng and C. Chou, Effect of pulsed gas tungsten arc welding on angular distortion in austenitic stainless steel weldments. science and Technology of welding and joining. 6(3) (2001) 149-153.

DOI: 10.1179/136217101101538686

[11] S. Okano and M. Mochizuki, Transient distortion behavior during TIG welding of thin steel plate. Journal of Materials Processing Technology. 241 (2017) 103-111.

DOI: 10.1016/j.jmatprotec.2016.11.006

[12] S. Pandiarajan, et al., Interfacial microstructure and optimization of friction welding by Taguchi and ANOVA method on SA 213 tube to SA 387 tube plate without backing block using an external tool. Journal of Alloys and Compounds. 654 (2016) 534-545.

DOI: 10.1016/j.jallcom.2015.09.152

[13] K. Krishnaiah and P. Shahabudeen, Applied design of experiments and Taguchi methods. 2012: PHI Learning Pvt. Ltd.

[14] M.H. Shahavi, et al., Clove oil nanoemulsion as an effective antibacterial agent: Taguchi optimization method. Desalination and Water Treatment. 57(39) (2016) 18379-18390.

DOI: 10.1080/19443994.2015.1092893