Aircraft Spruce has exactly what you need: Metalprep 79 (P/N 79-QT for the
one quart size) and Alodine 1201 (P/N 1201-QT, and I think you can guess the
size). Sufficiently detailed instructions are on the labels.
The Metalprep is a mixture of phosphoric acid (the stuff in cola drinks!!)
and glycols in water and it will remove any minor crud including oxides on
the surface of the aluminum (and factory parts very likely arrived needing
nothing more than this treatment). The Alodine contains the somewhat
nastier chromic acid in water and should be handled with care and only while
wearing eye protection and gloves, although prudence suggests the same for
handling Metalprep.
Should you prefer another source, the manufacturer is Henkel Surface
Technologies at http://www.hstna.com/index.cfm
Check out http://www.buyhstna.com/docs/235110.pdf for details on Alodine
1201, and http://www.buyhstna.com/docs/234461.pdf for Metalprep 79.
Best regards,
Rob Housman
Vox: 714-542-1615
Fax: 714-542-1177
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of Andrew Sarangan
Subject: Europa-List: Alodine advice
I recall speaking to the Europa factory, and was adviced that it was
not necessary to treat the parts that are being bonded into the rudder,
tailplane, flaps, ailerons etc.. The manual mentions corrosion
treatment for the first time in chapter 8 (wings). I am wondering
what's so special about the wing hardware that needs protection?
Since I prefer a DIY process, alodine appears to be the easiest. A
google search revealed that there is no such thing as "Alodine", but
names like Alodine 1001 or Alodine 5200 etc... Being no expert in
metallurgy, I am at a loss which one to buy. Don't I also need an acid
cleaning agent prior to applying the alodine itself? Does this come
with the Alodine, or should I buy this seperately?
Is there a FAQ I can read about the alodine process?
Thanks!
=====
Andrew Sarangan
http://www.geocities.com/asarangan
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