Metco Metallizers

Stop Corrosion of Metallic Structures
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Why Aluminize?
Sprayed aluminium coatings are obtained my melting Al wire on an electric arc or gas flame, atomizing the molten particles which are then propelled by compressed air on to a blasted surface. Aluminizing is recommended by British standard BS:2569 (part 2) and Japanese standard 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 75 chimneys aluminized since 1992.

The process
  • First the surface is blasted with abrasives to remove all traces of rust and thus facilitate exposure of the base metal.
  • Within a few hours, the blasted surface is coated with aluminium. This is done by melting an aluminium wire in an electric arc and atomizing the 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 done periodically for lustre-retention, the basic aluminium coating remains intact and will protect the structure for years.