A new welding process has been developed which uses a hybrid concept. A portable induction coil is operated ahead of the arc welding torch, and heats the surfaces of the weld to near the melting point. Then the heat generated by the welding arc is primarily used only to melt the welding wire. The process operates at speeds of 2-3 times the speed of conventional arc welding and has the added advantage of substantially reducing weld distortion in butt seam welds. An innovative approach has now been developed to utilize this process for stiffener-to-panel, T-Fillet welds – which is a significant distortion problem requiring costly straightening – so that the distortion in the panel is reduced.

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