Projection Resistance Welding Process. For joining dissimilar materials resistance projection welding offers cost-saving options In traditional resistance welding left energy flows through two pieces of metal directly from one electrode to another. The most important variables of this assembly technique are the quality of the projections and the response of the cylinder as the projection collapses during the welding time.
The most important variables of this assembly technique are the quality of the projections and the response of the cylinder as the projection collapses during the welding time. In this process produces coalescence of welding metals the heat generated from electric resistance to current through the work piece hold together with pressure applied to electrodes. One of the main differences between conventional sheet-to-sheet resistance welding and projection welding is that projection welding is a dynamic process involving considerable movement of the upper electrode.
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Projection welding is one kind of resistance weld where the shape or design of the part is used to make subtle point contacts to concentrate the current during welding. In the case of some high alloy steels a slow cool or tempering cycle may need to be incorporated into the weld schedule to reduce the brittleness of the weld. Ad Find China Manufacturers Of Welding Wire. Projection is a type of resistance welding.