Thermal Spraying

  • Thermal spraying of aluminum or aluminizing involves deposition of 99.5% pure aluminum over the prepared surface.
  • The sprayed metal is melted using an electric arc that is atomized with compressed air and projected over the substrate, and is prepared using sand and quartz blasting.
  • According to IS & BS standards, it would be resistant to up to 950ºC temperature. The aluminizing process is used to protect parts operating in high temperature environments against corrosion and oxidation.
  • As a result, the most common parts coated are high temperature industrial chimneys and mufflers.
  • Railway bridges are aluminum metalized for corrosion protection, as per Indian railway standards and ship hulls are aluminum metalized periodically for corrosion protection as per IS and BS standards.

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