Pre-anodization

Buildings are often constructed in areas with a polluted environment, which has proven to be crucial for the development of corrosion.

Even if all quality procedures are strictly followed, corrosion may develop under the electrostatic paint layer under certain external conditions, such as high humidity, the presence of salt or a particularly polluted atmosphere. This phenomenon is known as filiform corrosion and is one of the most significant problems in the electrostatic aluminum painting industry.

Therefore, filiform erosion mainly occurs in:

  • Coastal areas
  • Residential areas with heavy pollution
  • Areas where salt is used on roads to clear snow and ice
  • Near swimming pools where the water is chlorinated

Tackling filiform corrosion.

Numerous international studies as well as years of experience have shown that the pre-processing stage of the profiles is decisive for the appearance and development of this form of corrosion.

Alumil, with which we collaborate on all our paints, as a pioneering company in the development and production of architectural aluminum systems, offers, in addition to the usual solutions, the most specialized and superior quality solution of "pre-anodization" to address the issue of filiform corrosion.

Pre-anodization is a pre-treatment process that allows us to combine anodizing and electrostatic painting and take advantage of the best elements of each method. This high-quality solution offers unique corrosion protection and countless color options, providing unparalleled freedom in the design of any type of building regardless of the geographical area being constructed and the general conditions of the external environment.

It is important to mention that electrostatically painted profiles that have undergone pre-anodization are characterized as Automatic Seaside by Qualicoat and Sea Proof Plus by GSB, a scale higher than those that have undergone the usual pre-treatment of "enhanced removal of aluminum layer by chemical methods" before electrostatic painting.