Instead of flux try scare tactics. Threaten to have Doug do the
soldering. The wires will probably wet themselves.
Back when Halides were our friends, I used a pre-tinning flux (Kester, I
think) designed for silver finishes. It worked great.
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Keith Calhoun
Sent: Tuesday, October 11, 2011 12:56 PM
To: [log in to unmask]
Subject: [TN] Wire soldering question

 
We are building a small assembly for one of our customers using
M22759/12-24 wires, (nickel plated copper, Teflon insulated).  We are
using Multicore HMP solder, (Sn5, Pb93.5, Ag1.5) for this assembly.
 
Do any of you have a recommendation for a flux that may help in getting
this wire to wet?  The other solder joints are acceptable, we just can't
get the wire to wet.  I know that I am trying something difficult, as
soldering to nickel is difficult at best.  I would be most greatful for
any suggestions that anyone has for this.
 
Thanks for the excellent resource!
 
Keith S. Calhoun
Manufacturing Engineering Manager
SoPark Corporation
3300 South Park Avenue
Buffalo. New York 14218
Phone: 716-822-0434 ext. 237
Fax: 716-822-5062
[log in to unmask]
Thank you for helping SoPark reach our 30th year as a Premier
Electronics Manufacturing Service Provider!
ISO 9001:2008 & AS9100B Certified 
 

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