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Sprayed Aluminum coatings are obtained by melting Al wire on an electric arc or gas flame, atomizing molten particles which are then propelled by compressed air on to a blasted surface. Aluminium is recommended by British standards BS:2569 (part 2) and Japanese standards JIS H 8301 for the protection of Iron and steel against corrosion and oxidation at temperatures up to 1000 degrees celcius.
Other applications: Exhaust stacks, mufflers, ducts, etc.
Over 100 chimneys aluminized since 1992.
First the surface is blasted on abrasives to remove all traces of waste and thus facilitates exposureof metal.
Within a few hours, the blasted abrasives is coated with aluminum. This is obtained by melting an aluminum wire on an electric arc and atomizing molten particles. These particles are then propelled by compressed air on to a blasted surface.
Additional sealant provides barrier protection to the surface. Though surface painting has to be changed periodically for lustre-retention, the basic aluminum coating remains intact and will protect the structure for years.