Welding Galvanised Steel Fumes. Studies on the effects of human exposure to welding fumes present contradictory if not inconclusive evidence. Vapours or fumes can come from coatings and residues on metal being welded.
Fumes from welding galvanized steel can contain zinc iron lead and other potentially toxic substances fumes composition and amount typically depend on the composition of materials used as well as the current voltage and process type. Oxy-fuel and plasma cutting along with brazing are related to welding as they all involve the melting of metal and the generation of airborne metal fume. Welding On Galvanized Metals One of the most significant health hazards in the welding process is the generation of fumes and gasses.
The inhalation of excessive zinc fumes can place you or the operator over the PEL permissible exposure limit and cause metal fume fever.
Removing the coating and re-spraying or painting the weld seam after welding to. Metal working fluids oils and rust inhibitors. Another one of the challenges of welding galvanized steel is that zinc coatings can make it impossible to do a clean weld interfere with fusion and lead to porosity and inclusions. The best advice work in a properly ventilated area use a supplied air welding hood and keep your head out of the plume.