Hi Craig - if your goal is flux control then I would recommend you 
eliminate the flux bottles entirely and move to a paste or "tacky" flux. A 
tacky flux allows for specific application location and volume control. 
With a liquid flux, you know that not all of the flux will see soldering 
temperatures, especially if your operators are overzealous with its 
application. With that being said, when we implemented this protocol, the 
operators wanted to lynch Doug and I for about 6 months - its quite the 
culture change. But in the long run, its a protocol  that has worked well 
and eliminated the majority of flux related defect issues/concerns.

Dave Hillman 
Rockwell Collins 
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From:   Craig Sullivan <[log in to unmask]>
To:     <[log in to unmask]>
Date:   09/20/2013 10:24 AM
Subject:        [TN] Liquid Flux dispensing
Sent by:        TechNet <[log in to unmask]>



This is an elementary question, but we do a fair bit of hand soldering in
some of our assemblies. We use flux bottles with needle nozzles in order 
to
dispense the flux on the board. I'd like to control how much flux is
dispensed. I know training is paramount, but in my effort to give the
operators tools to do their job more effectively, can anyone point me to
items to look at? I know about flux pens and we do use them as well, but 
was
just wondering what others might be using.

 

Craig Sullivan

Manufacturing Engineer

MPL Incorporated

P: 607.266.0480 x115

F: 607.266.0482

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