Modeling and analysis of elongation for submerged arc-welded joints by using developed agglomerated fluxes

Abstract

This study explores the elongation of submerged arc-welded joints by using developed agglomerated fluxes. The response surface methodology technique was used to conduct the experiments. MnO, CaF2, NiO, MgO, and Fe-Cr were added to the fluxes comprising CaO, SiO2, and Al2O 3 as the main constituents. The effect of the addition was studied by means of mechanical performances of the welds in terms of elongation. The elongation of weld metal increases with the increase in MnO, MgO, and Fe-Cr constituents, but CaF2 and NiO constituents did not reveal favorable sign unlike the other three constituents mentioned here. The recommended optimal conditions were verified by conducting confirmation experiments. © IMechE 2013.