Flux cored arc welding uses heat generated by an electric arc to fuse base metal in the weld joint area. This arc is struck between the metallic workpiece and the continuously-fed tubular cored consumable filler wire, with both the wire and the metallic workpiece melting together to form a weld joint.

Is flux core better than MIG?"); display: inline-block; height: 24px; width: 24px; transform: rotateZ(-180deg);"undefinedAs we already discussed, flux-cored welding is a much better option when welding cast iron. It provides better penetration and welds than MIG, which can weld cast iron, but the welds would be weak.