Amp Porn

[Peter Daniel]

Check this link for alodine: Make your stereos look good without anodizing.

[byteboy]

Thank you guys for the links!

I 'll have to do some reading.....

Henry.

[Da5id4Vz]

Peter, I’ve noticed a lot of structural aircraft parts have been treated to make them green. I’ve always assumed this is some type of paint to prevent oxidation on the aluminum. Is this correct?

Do you know if there is anything special about the paint that makes it stick well to aluminum, or is the stickiness just getting the metal prepped well before application?

[Peter Daniel]

I'm not authority in that matters, probably Dark Shadow can say more, but my understanding is that it's alodine, that mostly prevents aluminum from corrosion (in aircrafts). The green primer (which every part is treated with) is another form of protection as well provides more uniform look inside the plane. As every primer, it also provides good base for additional, external color finishes. If I'm not mistaken, it's water based and is hard to remove from clothes

[Da5id4Vz]

Perhaps it’s similar to this stuff:
http://www.aircraftspruce.com/catalo...es/primers.php
Although it looks affordable it mixes with toluene, sound a bit nasty to work with, think I'll avoid it.

Thanks.

-Dave

(The epoxy based stuff is "dope proof", uhm...)

[Peter Daniel]

OTOH it's hard to find a good primer thar sticks to aluminum.

The touch up primer used at Bombardier is kept in small bottles in a freezer. It's good only for one day and after that it aquires a solid state. It doesn't really smell much.

[Dark Shadow]

Originally posted by Peter Daniel
I'm not authority in that matters, probably Dark Shadow can say more, but my understanding is that it's alodine, that mostly prevents aluminum from corrosion (in aircrafts). The green primer (which every part is treated with) is another form of protection as well provides more uniform look inside the plane. As every primer, it also provides good base for additional, external color finishes. If I'm not mistaken, it's water based and is hard to remove from clothes

Ok the green stuff you see are as Peter stated a Fluid resistant (FR) epoxy primer. Here is the specification for bombardier (If you want to order it):

BAMS 565-001 Fluid Resistant (FR) Epoxy primer for aircraft interior

BAMS 565-007 Fluid Resistant (FR) Polyurethane coating for touch-up (The stuff that Peter have seeing at bombardier in the freezer)

BAMS 565-008 Fluid Resistant (FR) Urethane compatible primer for Aircraft Exterior.

Now the yellow stuff used to cover the inside surface of the wing to protect from the fuel:

CMS 565-10 Integral Fuel Tank Coating

Now let that Alodine:

Alodine 600, 1200 (Yellow to Gold colour) and Irridate is used for corrosion protection (light) and to improve adhesion for paint application (moderate).

Alodine 1000 (Transparent): for corrosion protection and low conductivity (For Electrical bonding)

Chromic anodize Without seal (For structural part application): higher corrosion protection and improved primer adhesion than alodine. No stress induced to part.

Chromic anodize With di-chromate seal (For strutural part application): Higher corrosion protection but a little less adhesion than chromic without seal. No stress induced to part.

Surfuric anodize (Mostly used for cosmetic application. That the type you see on Heat-Sink, Mag-Lite, Etc) With Dye pigment and Seal: Used for corrosion protection and the look. More thick than chromic but induce stress in the proceded part.

If you have more question donèt hesitate do ask me, Ièm still working at a aerospace compagny that manufacture and do assembly of the wing skins for bombardier

[Dark Shadow]

Here is a place that youc an order the BAMS 565-002:

Akzo Coating - Sassenhein, Netherland
Tempo Aerospace Inc. 205 Fenmar Drive, Weston, Ont
Tristar Coatings - Brampton, Ont.
PRC-Desoto / 11001 United Street, Mojave, CA 93501, USA
AKZO NOBEL, WAUKEGAN, IL
Nitoku, CO. Tokyo, Japan
SICO, Longueuil, Quebec.

All this supplier are approved to supply Bombardier for the green primer used in aircraft application (Interior application).

[Da5id4Vz]

Once again this forum has proven to be a font of useful information. As I have no immediate need for this, I will be sure to carefully file the questions and comments for future reference.

Thanks.

-Dave

[Dark Shadow]

Originally posted by Da5id4Vz
Once again this forum has proven to be a font of useful information. As I have no immediate need for this, I will be sure to carefully file the questions and comments for future reference.

Thanks.

-Dave

Like I said, if you have any question concerning finish on part, don't hesitate to ask me. I got acces to most of the aeronautic specification (Lockheed Martin, Boeing, Bombardier, Embraer, Bell Helicopter, Military Spec, etc). I can even share some PDF (the only that is public domain) and some general documentation about the different process (ex: http://www.focuser.com/atm/anodize/anodize99.html)

Francois Gregoire