Author(s): D D SCHWEMMER, D L OLSO, D L WILLIAMSON
The influence of iron oxide on the behavior of a manganese silicate base welding flux was investi- gated. Prefused submerged arc weld- ing fluxes were prepared from reagent grade materials and used to perform weld bead tests on 1020 and 4340 steel. The ionic state of iron in the flux was determined using Mossbauer analysis. The effect of the iron ion additions on the arc stability, bead morphology, capillarity, viscosity, and Mossbauer line widths is reported. Flux properties were shown to be related to the pene- tration of the weld bead. A linear relationship relating these parameters was developed.