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Date: | Fri, 21 Feb 97 05:38:37 cst |
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Hi Ron -
May I offer a different approach? Instead of switching to a different
low residue flux (a VOC free material) how about controlling the VOCs!
We are very happy with our current flux materials and so have
investigated the use of spray fluxing instead of our current
application method (wave fluxer). With the spray fluxer we can apply
only the amount of flux we need to for successful soldering and
control the quantity of flux volatiles that escape. We have taken the
approach (where possible) that instead of trying to eliminate
materials that we know add benefit to the process but are regulated,
trying to control and use those materials in an educated manner. I
have tried the water based VOC materials and they sizzle like bacon!
Nothing against those types of materials but I am just not ready to do
the characterization it will take to implement them in the existing
processes (culture/technology learning curve impact). Have fun.
Dave Hillman
Rockwell Collins
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Subject: Assy: Water Based VOC Flux
Author: [log in to unmask] at ccmgw1
Date: 2/20/97 11:11 AM
Good Day Forum:
This survey Ron again. As many of you on the forum have now figured,
we are in a transition period to a No-clean/Low-Residue Soldering
Solution. Initial evaluations have pointed toward implementing a
water based, VOC free, flux. The flux we tested was Kester's 973
flux. Looking down the road, it would seem that environmentalists
will eventually ask for further reductions in VOCs.
The question for the forum is "How many of you wave solderers are
using a water based VOC free (No-clean/Low-Residue) flux in your wave
soldering processes?"
If you would like to share your satisfaction with the results of this
flux I would appreciate it very much.
We are looking at convection heating to eliminate moisture and have
had excellent results (solderballing/spattering ...etc...).
Thanks in advance for your help.
Ron Hollandsworth
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ITT A/CD
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