Newsgroup: it.hobby.modellismo
Titolo: Anodizzare l'alluminio

Una volta avevo letto una pagina web che spiegava il metodo casalingo per 
effettuare processo in oggetto.
Qualcuno ne sa qualcosa? Non trovo più le info necesarie...
-- 
oVoo o o
ICQ:8621929 

Ciao,
A discussion on news:uk.rec.models.engineering , via 
www.rcgroups.com
:
http://www.rcgroups.com/forums/showthread.php?t=269233
There's also blu_swede's/Scott Peterson's method:
http://groups.yahoo.com/group/lrk-torquemax/files/
-> "Home anodizing files"
http://groups.yahoo.com/group/lrk-torquemax/message/5216
http://www.focuser.com/atm/anodize/anodize.html
http://www.artmetal.com/project/TOC/finishes/anodize.html
http://www.ssschemical.com/anodizing.htm
http://www.paintballtimes.com/Article.asp?ID=74
http://www.turborick.com/anodize.html
http://www.warpig.com/paintball/technical/anodize.shtml
Vriendelijke groeten ;-) Ron van Sommeren
14th.int
. electric fly-in, Aug.26, Nijmegen, Netherlands
http://home.hetnet.nl/~ronvans/
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Ciao,
http://home.hetnet.nl/~ronvans/forums/Anodizing_Aluminum.doc
http://home.hetnet.nl/~ronvans/forums/Anodizing_at_home.doc
http://home.hetnet.nl/~ronvans/forums/Anodizing_at_home_II.doc
http://home.hetnet.nl/~ronvans/forums/anodizing_instructions.pdf
Colouring and protecting IRON:
http://groups.yahoo.com/group/lrk-torquemax/message/9380
Materials and manuals:
http://www.electronic-thingks.de/index.php?lang=en
Below the description of a method by colleague 'Aerobscure' from France.
---------------
The process described s a not hard anodizing but decorative.
Anodizing aluminium is easy but the simplest way doesn't works with all the 
aluminium alloys. You will have bad results with 2017 and 2024 (dural) 
excepted with very dark colors. It works well with the 5xxx, 6xxx and 7xxx 
serie.
The steps are :
1- degreasing the aluminium parts
2- Anodizing.
For this operation you need a non conductive tank (pyrex is well) and a 
power source about 15 V (a 12V car battery is fine, it's a 13,8 V one !); 
the solution in the tank is 80% distilled water and 20% sulfuric acide. 
Connect the anode (+) to the aluminium part and the cathode (-) to a large 
sheet of lead (with gloves please !); The density of the current will be a 
bout 1A to 2A dm2. You can use a variable resistor for the regulation or 
some car light bubbles. Let in the bath for 30-40 mn. After that you will 
rince the part with water and a basic solution (ammoniac, soda ash, Deskstop 
...)
3 - Coloring
The most findable coloring agent in France is used for clothes under the 
brand name DYLON. It's a powder you add to boiling water. Immediatly after 
anodizing put the aluminium part in the colored boiling water during 2 or 3 
minutes. Dry it and repeat until you find the best coloration.
We have opened the alumine cells by anodizing, colored them and we must 
closed the cells. There is different solutions.
- Hot water just before boiling (<100° C)
- Nickel and Cobalt acetate (not easy to find !)
- Sodium silicate
- Salts of toxic metals !
- Linseed oil (or any fat)
Hot water (close alumine by hydration) and linseed oil are the simplest. I 
have tried the two ways and find that I get better results and durability 
with the second one.
You can see some drawings of the tank, regulator ... on my wapics site (this 
is not for anodizing but copper electro-plating and electro-formingbut it's 
the same principe 
http://wapics.free.fr/outil/galvano/galvano.htm
 )
Hope that is helpfull !
Aerobscure


Ciao,
You could contact Maurizio Martinucci
http://www.mauriziomartinucci.com/
-> motori brushless
-> particolari in ergal anodizzato.
Or Massimo Ferraresso
http://digilander.libero.it/ferramax/bless/MFB.html
Vriendelijke groeten ;-) Ron van Sommeren
14th.int
. electric fly-in, Aug.26, Nijmegen, Netherlands
http://home.hetnet.nl/~ronvans/
