A wide range of techniques can be used to apply zinc spray gun coatings to steel including galvanizing, zinc thermal spray gun metallization, electroplating, and zinc-rich paints, among others. These coatings can be used individually or in combination with a paint topcoat for a synergistic effect.
A zinc spray gun often complements galvanizing. For example, it can be used to coat existing steel structures and to treat steel too large to be hot-dipped. It can be used to restore corrosion protection to areas where galvanizing is removed during fabrication, such as along cuts or threaded ends; and to assure coverage of welds and rivets. It can also repair mechanical damage to galvanized surfaces. Likewise, the application of zinc-rich paints over galvanized or thermal sprayed coatings, known as a duplex system, can also extend barrier coating longevity.
This subject has been researched for many years and the literature is well provided with reports on zinc’s performance in various climates, with different alloy additions to the coating and at different coating thicknesses. Each system comes with its own set of advantages so it is important that the correct zinc coating is specified to provide optimal performance under the exposure conditions to which the coating will be subjected.
Shot Blaster is a leading Manufacturer of Zinc Spray Gun, thermal Spray gun, metalizing gun, arc spray gun, Sand Blasting Machine, Shot Blasting Machine, grit blasting machine, Sand Blasting Cabinet, pressure blast cabinet in India at a low price for sale.