Effects of welding parameters on penetration depth in mild steel A-TIG welding

Document Type : Research Note

Author

Marmara University, Applied Science High School, Istanbul, Turkey

Abstract

A-TIG welding is a welding method in which TIG welding is conducted by covering a thin layer of activating flux on the weld bead beforehand. The most benefit of this process is the gain in weld penetration depth. A-TIG welds were produced on mild steel plates with TiO2 flux. The emphasis of this paper lies in introducing the effects of various process parameters (welding current, welding speed, powder/acetone ratio of the flux, arc length and electrode angle) in mild steel A-TIG welding. The weld penetration depth was the measured metallographically. An optimum value was determined for each welding parameter.

Keywords


References:
1. Ahmed, N., New Developments in Advanced Welding, Woodhead Publishing Limited, Abington (2005).
2. Choudhary, S. and Duhan, R. "Effect of activated  flux on properties of SS 304 using TIG welding", Inter. J. Eng. Trans. B., 28, pp. 290-295 (2015).
3. Azevedoa, A.G.L., Ferraresia, V.A.J., and Farias, J.P. "Ferritic stainless steel welding with the A-TIG process", Weld. Inter., 24, pp. 571-578 (2010).
4. Fan, D., Zhang, R., Gu, Y., and Ushio, M. "Effect of flux on A-TIG welding of mild steels", Trans. Join. Weld. Res. Ins., 30, pp. 35-40 (2001).
5. Pan, W. and Shi, K. "Research on the effects of technical parameters on the molding of the weld by A-TIG welding", Trans. Join. Weld. Res. Ins., 40, pp. 37-9 (2011).
6. Cheng, H.K., Tseng, K.T., and Chou, C.P. "Effect of activated TIG flux on performance of dissimilar welds between mild steel and stainless steel", Key Eng. Mater., 479, pp. 74-80 (2011).
7. Vikesh, P., Randhawa, J., and Suri, N.M. "Effect of A-TIG welding process parameters on penetration in mild steel plates", Int. J. Mecha. Indust. Eng., 3, pp. 2231-2247 (2013).
8. Tathgir, S., Bhattacharya, A., and Bera, T.K. "Influence of current and shielding gas in TiO2 flux activated TIG welding on different graded steels", Mater. Manuf. Proces., 30, pp. 1115-112 (2015).
9. Singh, E.B. and Simgh, E.A. "Performance of activated TIG process in mild steel welds", J. Mecha. Civil Eng., 12, pp. 1-5 (2015).
10. Tathgir, S. and Bhattacharya, A. "Activated-TIG materials and manufacturing processes welding of different steels: Influence of various flux and shielding gas", Mater. Manuf. Proces. J., 31, pp. 335-342 (2016).
11. Cary, H.B. and Helzer, S., Modern Welding Technology, 6th Edn., Prentice Hall, NewYork (2004).
12. Akkas, N., Ferik, E., _Ilhan, E. and Aslanlar, S. "The effect of welding current on nugget sizes in resistance spot welding of SPA-C steel sheets used in railway vehicles", 130, pp. 142 (2016).
13. Kumar, R. and Bharathi, S. "A review study on A-TIG welding of 316(L) austenitic stainless steel", International Journal of Emerging Trends in Science and Technology, 2, pp. 2066-2072 (2015).
14. Zhang, J.R., Pan, H.I., and Katayama, S. "The mechanism of penetration increase in A-TIG welding", Frontiers Mater. Sci., 5, pp. 109-118 (2011).
15. Berthier, A., Paillard, P., Carin, M., Valensi, F., and Pellerin, S. "TIG and A-TIG welding experimental investigations and comparison to simulation. Part 1: Identification of Marangoni effect", Sci. Technol. Weld. Join., 17, pp. 609-615 (2012).
16. Zhao, Y., Shi, Y., and Lei, Y. "The study of surfaceactive element oxygen on flow patterns and penetration in A-TIG welding", Metall. Mater. Trans. B, 37, pp. 485-493 (2006).
17. Xu, Y.L., Dong, Z.B., Wei, Y.H., and Yang, C.L. "Marangoni convection and weld shape variation in ATIG welding process", Theo. App. Fract. Mecha., 48, pp. 178-186 (2007).
18. Ruckert, G., Huneau, B., and Marya, S. "Optimizing the design of silica coating for productivity gains during the TIG welding of 304L stainless steel", Mater. Des., 28, pp. 2387-2393 (2007).
19. Modenesi, P.J., Neto, P.C., Apolinario, E.R., and Dias, K.B. "Effect of flux density and the presence of additives in ATIG welding of austenitic stainless steel", Weld. Inter., 29, pp. 425-432 (2015).
20. Maduraimuthu, V., Vasudevan, M., Muthupandi, V., Bhaduri, A.K., and Jayakumar, T. "Effect of activated flux on the microstructure, mechanical properties, and residual stresses of modified 9Cr-1Mo steel weld joints", Metall. Mater. Trans. B., 43, pp. 123-132 (2012).
21. Zhang, Z.D., Liu, L.M., Shen, Y., and Wang, L. "Welding of magnesium alloys with activating flux", Sci. Techno. Weld. Join., 10, pp. 737-743 (2005).
22. Shyu, S.W., Huang, H.Y., Tseng, K.H., and Chou, C.P. "Study of the performance of stainless steel ATIG welds", J. Mater. Eng. Perfor., 7, pp. 193-201 (2008).
23. Hiraoka, K., Okada, A., and Inagaki, M. "Effect of electrode geometry on maximum arc pressure in GTA weldments", J. Japan. Weld. Soci., 3, pp. 10-16 (1985).
Volume 26, Issue 3
Transactions on Mechanical Engineering (B)
May and June 2019
Pages 1400-1404
  • Receive Date: 10 November 2017
  • Revise Date: 11 December 2017
  • Accept Date: 28 May 2018