We use Alpha 65 with our spray fluxer. It's not very pretty for a
no-clean, but it works most of the time.
     Whatever you use, watch your pre-heaters and your conveyor speed.
Low volumes and high mix is kind of like running an obsticle course with
your wave solder machine (strapped to your back). Whatever works today
is not likely to work tomorrow. (Different board sizes, thicknesses and
populations) In regard to your process---tune it, tweek it, and bang on
it with both fists, then record your successes in your little black
process book. Eventually you will develop a realistic wave soldering
process expectation "curve" for your flux.

Most flux manufacturers give you a spec sheet with a preheat "profile"
for their products. Stay close to it and you should be O.K. Check their
numbers-- some of them assume a standard preheat zone length, which may
not agree with your oven. That and about a half-dozen other variables
apply here. But you're a contract manufacturer, you're used to stuff
like that, so deal with it.


Neil Maloney
Contemporary Controls


 -----Original Message-----
 From: John Harris [mailto:[log in to unmask]]
 Sent: Tuesday, July 20, 1999 9:53 PM
 To: [log in to unmask]
 Subject: [TN] Fluxes


 All,

 What fluxes are you all using in your wave soldering machines? Are you
 happy with the results? Would they suit a low volume, high mix contract
 manufacturing environment?


 Thanks, your comments are welcome

 John Harris
 Process Engineer

 AEMS Pty Ltd
 www.aemspl.com.au

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