2. Properties of the cataphoretic film
As with all organic coatings, surface preparation of the part to be painted is essential: alkaline degreasers and zinc phosphating are the techniques commonly used in the automotive industry, while iron phosphating is also common in subcontracting and general industry.
2.1 Benefits
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Anticorrosion
The anti-corrosion properties imparted to metal parts by cataphoresis are exceptional, and far superior to those imparted by anaphoresis: they enable a vehicle's lifespan to be doubled or tripled without the appearance of pustules or perforations in the underpinnings. The 6-year anti-corrosion warranties given by automakers bear witness to this.
The reasons are as follows:
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Properties of the cataphoretic film
Paint constituents and resin chemistry
Bibliography
Suppliers
(non-exhaustive list)
BASF Coatings http://www.basf-coatings.de
Dupont Performance Coatings http://www.performance-coatings.org
AKZO Nobel http://www.akzonobel.com
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