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Achieve Effective Chassis Grounding And A Superior Black Finish For Aluminum Electronic Card Cages and Card Cage Components Using Lumiclad® Process From Birchwood Technologies


The Lumiclad® aluminum blackening process from Birchwood Technologies produces a superior black finish on electrical card cages and card cage components while maintaining predictable chassis grounding. Ideal for military, commercial and industrial applications, Lumiclad recently received patent approval – there is no other process like Lumiclad.

The Lumiclad finish is electrically conductive and extremely clean adding value to all types of aluminum electrical / electronic components and assemblies. The Lumiclad process forms a non-dimensional black oxide finish on all aluminum surfaces that is very durable, clean and tightly adherent to the metal substrate. The Lumiclad process develops a uniform coating thickness of 0.000060 inches (1.5 micron) that will not close down hole diameters or change critical part dimensions. The smooth black finish has a slightly porous crystal structure that absorbs an optional topcoat such as a dry-to-touch sealant, light oil, or clear polymer.

Before the development of the Lumiclad process, black anodizing had been the only viable blackening option for manufacturers of aluminum components. While the anodized finish is extremely durable, it is not practical for applications requiring electrical conductivity.

By utilizing a conventional immersion seven-tank process line, the Lumiclad process is easy and safe to operate so that manufacturers can operate it in-house. This process can be utilized for jobs of any size component, large or small, and for large quantities of smaller parts. Parts can be finished on racks as well as in baskets or barrels without the need to individually clamp each part.

Birchwood Technologies reports that Lumiclad expands a designer's options with its chassis grounding and quality black finish features. It is easy and safe to operate, streamlines workflow while providing low operating costs and high quality.