文档介绍：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 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 temp)
and gives an anodized layer of .0002" to .0009". Type III (hard coat) anodizing is done at a much
lower temperature and higher current level. It gives an anodized layer up to .002 but is normally at
.0005" (Mil spec) in most anodizing shops. Type III anodized surfaces can typically only be dyed
black or dark green. I will show you how to perform type II anodizing using the home brew hanging
wire method and materials found at typical hardware and auto parts stores (bare bones method). I
will also show you how to set up a semi-professional line using some of the anodizing kits for sale
on the today.
Please email any suggestions or questions concerning this procedure to Ron Newman
If you want more info on anodizing, I'm offering a small booklet for $12. "A Practical Guide to
Anodizing Aluminum at Home Nov-2002 Edition
It has detailed info on anodizing plus sections on Tumblers and media, Brite Dip electro polishing,
and fade/splash anodizing methods. This would be handy for anyone wanting to set up an anodizing
line. If you would like a copy (USA only), just send a check for $12 plus $3 shipping along with your
return mailing address to:
Ron Newman 114 Ardmoor Ave. Danville PA 17821
The following photos show my anodizing station set up:
A plastic tank for sulfuric acid in a sealed vented wood box, power supply, and AC unit.
A cleaner, desmut, and sealer tank along with a sink.
A tank for each color dye.
Before we get to the anodizing, let's talk about prepping th