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June 1998

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Subject:
From:
Cobey Schmidt <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 5 Jun 1998 15:27:06 -0500
Content-Type:
text/plain
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text/plain (74 lines)

                                The short answer to this is ;
                                The use of a nitrogen blanket in the
wave solder process has several advantages.  One is the increased
"wetting" of solder in an inert atmosphere - this is important with the
use of a no-clean flux which is less active than a normal rosin flux, so
the nitrogen helps make up for this inactivity.  The result is a lower
defect rate in the process. Also, the nitrogen inhibits the formation of
dross in the solder pot, a material cost and maintenance savings.
                                The tradeoff to all of these good things
is increased cost.  The initial capital investment for an inerted
machine is higher as well as higher operating cost for the nitrogen
itself.


                                -----Original Message-----
                                From:   Terry Huddleston
<mailto:[SMTP:[log in to unmask]]> [SMTP:[log in to unmask]]
                                Sent:   Friday, June 05, 1998 11:42 AM
                                To:      <mailto:[log in to unmask]>
[log in to unmask]
                                Subject:        [TN] ASSY: Use of No
Clean Flux in a Nitrogen Atmosphere?

                                No-clean  flux  for  wave soldering
process  with  the  presence  of Nitrogen  atmosphere .
                                What  are the advantages  and
disadvantages ?
                                Any  cost  impact  associated  with
this  process ?
                                Any  solder  quality  output  issues  if
Nitrogen  jacket  is  not used ?
                                Thanks
                                Terry Huddleston
                                Product Assurance Manager
                                Teledyne Lewisburg
                                Phone: (931) 359-4531
                                FAX:    (931) 359-4978


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