Hi Phil,

We are tinplating our aluminum chassies more and more. We have our own
patented method, but the web is full of tips on various ways. You get a
very tough, nice and handable surface. Tin surface is not so vulnerable
as chrome can be when thin.

Inge

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Från: TechNet [mailto:[log in to unmask]] För Phil Nutting
Skickat: den 2 mars 2006 16:47
Till: [log in to unmask]
Ämne: [TN] "chrome" conversion of aluminum chassis

Good morning all,
 
As we move forward with RoHS and in an attempt to comply we are changing
the surface treatment of all our metal chassis parts.
 
Hexavalent Chrome Alodine or Iridite conversion processes are being
replaced with either a Trivalent Chrome Process (TCP) or Non Chrome
Process (NCP) for surface treatment of aluminum (aluminium for the Brits
out there).
 
What good, bad or ugly tales do you have?  I know fingerprints are an
issue with some platings.
 
Has anyone changed processes and run salt spray tests?  What were the
results?
 
I'm trying to put together some supporting (or refuting) data on
possible chemistries for conversion coatings to be able to defend our
change decisions.
 
Thanks in advance,
 
Phil Nutting

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