Anodized Architectural Aluminum combined with an Organic Seal
Michael Turner, Douglas Penn, Richard Porosky, Tsutomu Ito, YKK AP America Inc.
Track: VALUE-ADDED PROCESSES - Anodizing
ABSTRACT --- The performance levels for anodized architectural aluminum, combined with
an organic seal, have recently been defined by the American Architectural Manufacturers
Association’s, AAMA, Voluntary Specification 612 (AAMA 612). This surface coating yields
a final finish that reveals the intrinsic luster of aluminum, while also providing protection
against corrosion, erosion, and other elements. Aluminum articles are produced with a
surface coating of high-durability by first electrolytically oxidizing the article in an acidic
anodizing bath and, after water washing, depositing the article in a solution of a
thermosetting resin, then passing a current through the article as the anode to cause the
electrodeposition of resin particles to the oxidized porous surface. The article is then heated
to cure the resinous film.
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