Abstract—Purpose of present work is to investigate the effect of oxide flux on welding of austenitic stainless steel 304L plates having thickness 8 mm its effect on welding distortion, ferrite number, hardness value and depth of penetration. SiO2 is used as a flux in the form of powder mixed with the acetone and applied on bead plate without making a joint preparation and without addition of filler wire. The result showed that this technique can increase depth of penetration and weld aspect ratio resulting in lower angular distortion. The ferrite content in the weld joint obtained is 14% by weight; the increase in the ferrite content is due to assistance of flux in rapid cooling therefore more ferrite content in 304L weld metal during the solidification after welding. Finite Element analysis of plate has been carried out using SYSWELD. Three dimensional double ellipsoidal (Goldak) heat source is used to model the heat flow during the welding. the heat source definition has been validated against the experimentally obtained grain structure (macrograph) and thermal history. Finally transient thermal analysis of welded plate has been done for study the peak temperature reaching in flux coated GTA welding.
Index Terms—Purpose of present work is to investigate the effect of oxide flux on welding of austenitic stainless steel 304L plates having thickness 8 mm its effect on welding distortion, ferrite number, hardness value and depth of penetration. SiO2 is used as a flux in the form of powder mixed with the acetone and applied on bead plate without making a joint preparation and without addition of filler wire. The result showed that this technique can increase depth of penetration and weld aspect ratio resulting in lower angular distortion. The ferrite content in the weld joint obtained is 14% by weight; the increase in the ferrite content is due to assistance of flux in rapid cooling therefore more ferrite content in 304L weld metal during the solidification after welding. Finite Element analysis of plate has been carried out using SYSWELD. Three dimensional double ellipsoidal (Goldak) heat source is used to model the heat flow during the welding. the heat source definition has been validated against the experimentally obtained grain structure (macrograph) and thermal history. Finally transient thermal analysis of welded plate has been done for study the peak temperature reaching in flux coated GTA welding.
M. Zuber and V. Chaudhri are with the Institute for Plasma Research Gandhinagar Gujarat India (e-mail: zuber@ipr.res.in).
V. K. Suri and S. B. Patil are with Bhabha Atomic Research Centre Mumbai India.
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Cite:M. Zuber, V. Chaudhri, V. K. Suri, and S. B. Patil, "Effect of Flux Coated Gas Tungsten Arc Welding on 304L," International Journal of Engineering and Technology vol. 6, no. 3, pp. 177-181, 2014.
