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Thu, 25 Apr 2002 11:31:34 -0400 |
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Jean-Luc and other TechNetters,
I just want to point out that I was absolutely NOT talking about CFC's
(chlorofluorocarbons), which of course I know are banned. I am concerned
about fully fluorinated compounds - no chlorine, no hydrogen, just
CF3(CF2)nCF3 and branched chain equivalents. I will shut up if someone can
tell me about cooling sprays that are not based on CF compounds - or on
relatively friendly gases like CO2 and N2.
Bev Christian
Research in Motion
-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: April 25, 2002 10:02 AM
To: [log in to unmask]
Subject: Re: [TN] Freeze Spray Trouble Shooting
Nice equipment but well the original post was about freezing electronic
component, and not to cool down dry machining operations.
For electronic application, the chemical used must be clean and not have
any contaminants in it, otherwise the electronic won't like it.
I see that Exair Vortex include a dust and oil filter but is it clean
enough for electronic parts ?
Another thing is that also it is small compared to a milling machine, the
Vortex is still quite bulky to use in a lab, specially with the hose for
the shop air.
Aother thing to consider is that most freeze spray are specified with low
electrostatic charge, because charge build-up could destroy components.
As for Bev Christian's concern about CFC, there are Freeze Spray without
CFC.
Jean-Luc Lehmann
SteveZeva@AOL
.COM To: [log in to unmask]
Sent by: cc:
TechNet Subject: Re: [TN] Freeze Spray
Trouble Shooting
<[log in to unmask]
ORG>
25.04.02
02:44
Please
respond to
"TechNet
E-Mail
Forum.";
Please
respond to
SteveZeva
Hi David!
That's why this list is so valuable! They are still around!
Http://www.exair.com
Thanks!
-Steve Gregory-
Bev, Years ago (about 7) there was a company selling hand held Vortex
generators that plugged into 100 psi shop air.
These little jewels put out -40 degree C air as long as there was 100 psi
available. It also had to be dry nonlubed air. The company was called
EXAir. I don't know if they are still around. David A. Douthit
Manager
LoCan LLC
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