文档介绍：Anodizing Aluminum /anodize/
Anodizing Aluminum
by Ron Newman
The following procedure is for anodizing aluminum parts. Anodizing will protect the aluminum parts by making the surface much harder
than natural aluminum. Aluminum oxide is grown out of the surface during anodizing and then es aluminum hydrate that is
extremely hard. The porous nature of the anodized layer allows the product to be dyed any color that is required. The method I describe
is Type II anodizing (room temperature) and gives an anodized layer of .0002" to .001" (half which is grown into the surface and half out
of the surface). Parts anodized will e slightly larger by about .0005" Type III (hard coat) anodizing is done at much colder
temperatures and at higher current densities and can reach thick nesses of .002". Type III anodized surfaces can typically only be dyed
black or dark green due to the denser pore size. I do not cover hard coat procedure due to it not being in the "home brew" category due to
the colder acid temp and high current density that would be required to perform it. The anodizing guide will show you how to perform
the more popular Type II anodizing (Room Temp) using the home brew hanging wire method with materials found at typical hardware
and auto parts stores, (bare bones method). Almost everything you need can be found locally except anodizing dyes and sealer which I sell
small quantities on this site.
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Anodizing Aluminum /anodize/
Here are a few parts done with this system on my brother in laws car. Note the red pulley and water pump housing anodized in Red,
anodizing is not just for hose fittings. The next photo shows an after market skid plate that was anodized and dyed red to match the bike's
colors.
Yes just about anything aluminum can be anodized, even these aluminum horse shoes!
A little custom color on your bike parts gives it a one-of-a-kind look. It is possible to do