We have an assembly that is very high quanities that we wave solder sheilds 
on without a problem.   Are you sure that the shield is coming in contact 
with the solder evenly? (consistant solder dwell time)  Is the sheild at 
proper temperature evenly?  What are you using for solder temperature and 
wave equipment?  Otherwise maybe it is a solderability problem with the 
sheilds.  I wish I could help more but, we have never had this problem 
(yet!)

 ----------
From: TechNet-request
To: Technet
Cc: Jan.Merstrand
Subject: Re: FAB: Solder plated shields
Date: Thursday, August 01, 1996 02:23

     Hi Jan -

     Try adding a small amount of solder paste on the shield's thru holes
     and the joints should not be insufficient. The solder paste reflows as
     the assembly hits the wave.


     Dave Hillman
     Rockwell Collins
     [log in to unmask]



______________________________ Reply Separator
_________________________________
Subject: FAB: Solder plated shields
Author:  [log in to unmask] at ccmgw1
Date:    7/31/96 4:57 PM


Hi all!

I'm just curious. Is there any one who solder shields in their wave
solder machine?
We're soldering shields in our machine using some extra flux and a
little higher wave section at that moment on the pcb. But there's a
problem, we can't solder just one part. If you imagine that you have 2
exactly similar shields on a PCB, one shield going short ended and one
long sided going through the waves, and the shield which goes short
ended first won't solder one of the short sides, always. We've checked
if they're warped and so on, with no luck.
Any suggestions, ideas or anyone having similar problems, i sure would
appreciate them.

Regards,
Jan Merstrand
[log in to unmask]

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