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How To Welding Galvanized Steel. The zinc coating can be applied in many different ways including but not limited to hot-dipping metal spray and electrodeposition. Use eye protection and a respirator when you spray the zinc around the weld and hold the can about 16-18 inches away from.
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The galvanized steel on a welded fence will rust if the welder does not reapply the zinc coating. Welding of galvanized steel is done almost exactly the same way as welding of the bare steel of the same composition. Not only does the zinc coating on galvanized steel present a welding fume hazard but it also makes it more difficult to perform a clean weld according to Macro Specialty Steel.
The same welding processes volts amps travel speed etc.
There will be three melting points you will be dealing with. It is done to prevent or at the very least delay corrosion. There are a few interesting things to note here. Zinc is the coating used on galvanized metals and when you heat the metal it produces vaporized metal droplets which are called fumes.
