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Corrosion

Description
Surface of metal substrate is visible and shows corrosion spots. Brownish-red for steel, white rust in the case of aluminum substrates.

 

 

Origin and Potential Causes:
  • The surface of the metal was contaminated (fingermarks, water) before application.
  • Paint removed by chipping, scratches, etc.
  • Inadequate pre-treatment of the metal surfaces.
  • Rust was not completely removed before refinishing.
  • Destruction of paint film by contamination.

 

Prevention Techniques:
  • Treat metals with correct metal treatment and wash-primers.
  • Repair all chips and scratches before rust develops.
  • Clean the vehicle thoroughly before applying refinish system.
  • Residue of water from sanding still on the surface should be wiped off and allowed to completely dry before applying refinish system.

 

Remedy
  • Paint has to be stripped/sanded back to the bare metal.
  • Use the metal conditioner and a phosphoric acid wash primer (etch-primer) applicable for the substrate.
  • Refinish 

 
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