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topic 7700

Painting of Anodized Aluminum


I am looking for information regarding painting of anodized aluminum surfaces, specifically alloy 6063 T5.

In addition, I am also seeking information on powder coating such surfaces and the application of Kynar finishes to such surfaces.

Dan Hilburn
Balco, Inc. - Wichita, KS, USA


I can't help with powder coating but the first step after anodising is normally to apply a corrosion inhibiting primer to an anodised finish. Any serious adhesive supplier (particularly aerospace adhesives) will be able to supply one. They are normally chromate based but the choices are numerous. 3M, Cytec, and Hexcel all produce excellent versions. HVLP spraying of water based is now much more common so no major difficulty equipment wise. Most of them used to be high solvent content and these are still available.

Ciaron Murphy
- Great Britain

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