Development Of Stainless Steel Welding Wire For Galvanized Steel Sheets

Welding of stainless steels 1 0 introduction stainless steels are defined as iron base alloys which contain at least 10 5 chromium.

Development of stainless steel welding wire for galvanized steel sheets.

When galvanized sheets are welded zinc near a weld molten pool evaporates. This process causes the iron and zinc layers to diffuse into one another causing the formation of zinc iron alloy layers at the surface. Development of stainless steel welding wire for galvanized steel sheets article in welding in the world le soudage dans le monde 54 1 2 january 2013 with 6 reads how we measure reads. As a result the corrosion resistance is deteriorated and repair coating treatment is required after welding.

The thin but dense chromium oxide film which forms on the surface of a stainless steel provides corrosion resistance and prevents further oxidation. Stainless steel and galvanized materials often are found together in the industry with applications such as galvanized fasteners stainless steel pressure vessels and roof and siding panels. For mild steel galvanized steel sheet j421 j422 or j423 welding rods should be preferred. Galvanneal is the process of taking hot dipped galvanized steel and passing it through a furnace to anneal the coating.

For galvanized steel plates with a strength of over 600mpa the welding rods of e6013 e5503 and e5513 should be selected. The presence of two dissimilar metals in an assembly is not always a sign of trouble but it could be a problem. The use of austenitic stainless steel welding materials with suitable ductility and high corrosion resistance appears to be beneficial.