Dewey,
Will I don't disagree, stripping of an entire assembly, especially if you
have thousands, is incredibly wasteful and often causes as many problems
as it solves. Global stripping involves immersion in toluene or xylene
and creates a LOT of flammable waste and often gets into other connectors
and keep out zones where it causes problems. The media blasting is a dry
process and the residues easily removed. I would suggest a light toluene
swab of the area anyway to make sure that you don't have any residual
coating on the pads that would interfere with a good solder joint.
Doug Pauls
From: "Whittaker, Dewey (EHCOE)" <[log in to unmask]>
To: <[log in to unmask]>
Date: 10/10/2012 12:17 PM
Subject: Re: [TN] Conformal coating removal
Sent by: TechNet <[log in to unmask]>
I would wait for Doug on this, since he takes his lead from Graham on
sartorial splendor and is more used to partially coated affairs. I would
strip the whole assembly if possible as the process does an excellent job
of prepping the substrate for re-coating.
Dewey
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan Tempea
Sent: Wednesday, October 10, 2012 9:56 AM
To: [log in to unmask]
Subject: [TN] Conformal coating removal
Dear Technos,
We need to locally strip the acrylic coating (1B31S) from a few
components, on a few thousands of boards. Right now we're using Q-tips to
do the rubbing and, besides having to pluck tons of fibers afterwards,
we're also going through a lot of Q-tips.
So the question is: is there anything else we can use, that will be more
effective, cleaner and more economical?
Thank you,
Ioan Tempea
Ingénieur principal de fabrication / Senior Manufacturing Engineer
[signature002]<http://www.digico.cc/>
950 RUE BERGAR, LAVAL, QC, H7L 5A1<http://g.co/maps/2gh3f>
T+ 1 (450) 967-7100, EXT244
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[signature001] <http://www.facebook.com/pages/Digico/277076778479>
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Lauréat Dunamis 2012<http://digico.cc/dunamis-2012/>
Entreprise manufacturière / Gestion du capital humain
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