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March 2001

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Subject:
From:
Phil Nutting <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 23 Mar 2001 13:34:28 -0500
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Charles,

We solder stainless steel to drain wires for transformer shields.  The flux
we use is as follows;

N-3 All Purpose Flux

from
LA-CO Industries, Inc./Markal Company
250 N. Washtenaw
Chicago, IL 60612

The bottle says " for soft soldering of stainless steel, Chrome and copper.
Do not use on aluminum or high temperature solder."

Hope this helps,

Phil Nutting
Manufacturing Engineer
Kaiser Systems, Inc.
High Voltage Power Supplies That Work(tm)
126 Sohier Road
Beverly, MA 01915
ph: 978-922-9300
fx: 978-922-8374
www.kaisersystems.com
[log in to unmask]


-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Friday, March 23, 2001 9:35 AM
To: [log in to unmask]
Subject: [TN] soldering to stainless


Here is my problem. One of them anyway. We have an assembly with a stainless
steel pin that has a flex soldered to the end. Currently the pin is nickel
plated. Due to some problem which has not been explained to me very clearly,
it
has been proposed to eliminate the nickel plate. My problem is obvious. How
do I
solder a little flex to the end of this stainless steel pin? This is a high
dollar, high reliability assembly. ( Navy pilot wants this to work ) Any
suggestions or advice are welcome. It may be posssible to have the pin
plated
only on the area that gets soldered but I am looking at the worst case
because I
have been around long enough to know that somebody who does not have to deal
with a problem can always make it harder on those who do.
Thanks in advance,
Charles Caswell
Process Lead, PCB
Frontier Electronic Systems

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