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Hard anodize process, what is it? Developed more than
forty years ago, the hard anodize method is an electrochemical
process that involves placing an aluminum part into
an electrolytic bath and applying electrical current
through the bath. This process forms an oxide coating
(sapphire-hard) on the aluminum
part. The oxide coating is built up by a process of
anodic oxidation in a cooled acid electrolyte, thus
preventing any thermal or physical distortion of precision-engineered
components. This oxide coating can be harder than case
hardened steel and provide excellent abrasion resistance;
it is protective to the aluminum part and can be very
durable.
The
thickness of the hard anodize piece can be very closely
controlled and be applied to a wide variety of parts
to suit applications from many industries. Secondary
treatments such as impregnation with solid film lubricants
and colored dyes are available.
You'll
find Duralectra hard anodize parts anywhere you find
aluminum surfaces... on the moon, under the sea, in
hospitals, schools, laboratories, factories, and in
your own home. Hard anodizing is produced by specialist
finishing companies, like DURALECTRA a member of IHAA.
NADCAP Approved Source: We are an approved vendor for
the major aerospace and commercial contractors. We certify to government
and commercial specifications.
Coating Properties:
The coating properties are dependent upon alloy type and the
process specification will typically give details of: Thickness, Corrosion
Resistance, Hardness & Wear Resistance, Electrical Resistance, Temperature
Resistance, and Friction Coefficient after Lubrication
When you need to give an
aluminum surface the hardness of casehardened steel while maintaining the
lightweight and strength of the aluminum, you need Duralectra. We make
extensive use of the Sanford Process®,
a hard anodize process that is so versatile it enables us to
hardcoat virtually all alloys (including 2000 series).
The Sanford Process®
is the leading technology in the global hard anodizing market. Advantages
of the Sanford Process®
include the capability of hard anodizing all aluminum alloys,
higher abrasion resistance, superior coating hardness and uniformity,
higher thermal conductivity and corrosion resistance, and the ability to
dye with bright vibrant colors.
Hard Anodize Coating
Quality: Duralectra uses the following standards when Anodizing
Aluminum (Sulfuric Acid):
MIL-A-8625,
Type III, Class 1 and 2, BAC-5821
Class 1 and 2, AMS-2468, and
AMS-2469.
For Chemical Conversion Coatings on Aluminum, MIL-C-5541 is
used.
Testing for Inorganic Chemical Treatments, Duralectra applies Taber
Testing, Coating Thickness, Coating Weight and Salt Spray Testing using an
outside testing laboratory.
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