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What is the principle of the hole sealing process in anodic oxidation?
Jan 20, 2018

Sealing holes:

In order to improve the quality and stain of the aluminum parts, the fine pores of the oxide film must be closed after being dyed. After sealing treatment, the surface will become uniform and no holes and form compact oxide film.

The dye deposition is no longer erasing in the oxide film, and the oxide film after sealing is no longer adsorbable, which can avoid the adsorption of harmful substances and is polluted or early corroded, thereby improving the performance of anodizing film, such as pollution prevention and corrosion resistance.

The commonly used coloring methods include hydrated sealing, inorganic salt solution sealing and transparent organic coating sealing.





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