The LUMICLAD process forms a non-dimensional black oxide finish on all
aluminum surfaces that is clean, durable and tightly adherent to metal
substrate. The finish has an inherent lubricity that aids in break-in and resists galling,
making it an ideal finishing choice for product assemblies with sliding
contacts. Aluminum machine components, such as piston/cylinder assemblies,
actuator mechanisms, slides and valve assemblies achieve smoother break-in with
a LUMICLAD finish than with conventional anodized finishes.
The LUMICLAD finish offers conductivity and break-in lubricity in
a protective black finish. The 30-minute process develops a uniform coating
thickness of .000060 inches (1.5 micron) that will not close down hole
diameters or change critical part dimensions. The black finish is smooth, clean
and electrically conductive, making it useful for assemblies requiring a
The LUMICLAD process delivers a smooth satin black finish with a slightly
porous crystal structure that absorbs an optional topcoat, such as clear
polymer, light oil or dry-to-touch sealant.
Prior to the development of this new blackening process, black
anodizing had been the only viable blackening option for manufacturers of aluminum
components. While the anodized finish is extremely durable, the process is so
complex that only those who specialize in it can operate it properly and
consistently. Though the protective properties of a black anodized finish are
high, often they are higher than the application requires and they come at
significant additional cost.
The LUMICLAD process utilizes a conventional immersion tank
process line. For most applications, a seven-tank line and a 30-minute process
time does the job from start to finish.
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