Steve,
I know you have to be careful about the impact of high pre-heat on
components and board planarity, but with that said, under the appropriate
conditions we have pre-heated 50 or so C higher for particularly tough
applications
Charles Dennehy
President
Circuit Technology Center, Inc.
978-374-5000 ext: 12
PS. Keep up with the latest industry news, and learn some
Tricks-of-the-Trade we've discovered over the past 20 years. All of this and
more in the Circuit Technology Center eNewsletter. See the latest issue at
http://www.circuittechctr.com/general/enews.shtml. Visit the bottom of the
newsletter for a free subscription.
-----Original Message-----
From: Stephen Gregory [mailto:[log in to unmask]]
Sent: Thursday, March 31, 2005 5:42 PM
To: [log in to unmask]
Subject: [TN] Heavy PCB Copper Wave Soldering...
Hi Ya'll!!
I just thought I'd share what is going to make things a little
more interesting for me here at work over the next couple
of days...
Go to: http://www.stevezeva.homestead.com and look at;
"Heavy Metal", Heavy Metal 2, and Heavy Metal 3. This
an assembly that I will be wave soldering, that has two 20-ounce
layers of copper on layers 2 and 11 (this is a 12-layer board).
I may be asking for some help for this...
My first try is to preheat and bake the assembly in a oven close
to the wave solder machine at 150 C., and then quickly remove
it from the oven, get it into the wave as soon as I can before it has
a chance to cool down, and see what kind of barrel fill I get.
I'll let you all know if this works, or I may be asking for some
help...
Kind regards,
-Steve Gregory-
Senior Process Engineer
LaBarge Incorporated
Tulsa, Oklahoma
(918) 459-2285
(918) 459-2350 FAX
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