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A: I would like to answer your question as a general discussion of flux-cored welding. The American Welding Society (AWS) classifies all tubular electrodes having a flux on the inside as flux-cored wires, and calls it the Flux Cored Arc Welding (FCAW) process. All flux-cored wires have some similar characteristics. These include forming a protective slag over the weld, use a drag angle technique, have the ability to weld out-of-position or flat and horizontal only at higher deposition rates (depending on type of wire), ability to handle contaminants on the plate, etc.
welding wire select an aluminum filler wire that has a melting temperature similar to the base material the more the operator can narrow down the melting range of the metal the easier it will be to weld the alloy obtain wire that is 3 64 or 1 16 inch diameter the larger the wire diameter the easier it feeds