Electronics Forum | Wed Mar 25 20:00:32 EDT 2009 | davef
We are not sure what you mean by "any type like plastic, aluminum, stainless steel etc?" Binks [(US Corporate Offices), ITW Industrial Finishing, 195 Internationale Blvd., Glendale Heights, IL 60139; 630-237-5000 888-992-4657 http://www.binks.com] m
Electronics Forum | Mon Jun 07 04:56:48 EDT 2004 | loz
Recently introduced to machine spraying. Used a PVA2000. Worked out OK. Steep learning curve though. Programming time consuming but relatively sraight forward. Point the spray head and teach the 'path' you want it to take. Used acrylic coating and t
Electronics Forum | Tue Jan 24 21:07:17 EST 2006 | davef
We all genuflect to Graham Naisbitt, a generous contributor to SMTnet. Moisture-curing urethanes may form minute bubbles if the coating is too thick or the coating environment is too humid. So, tell us more about your urethane and the method you u
Electronics Forum | Mon Nov 06 10:51:23 EST 2006 | SteveH
We have 2 PVA2400 4 axis selective spray machines that we use to spray Humiseal 1B31 and 1A33. They take a bit of programming to get right, though this is easy to do, but do the job OK. Another to consider if you need the 4 axis of movement would b
Electronics Forum | Mon Aug 29 22:48:09 EDT 2011 | davef
Rich Here's what Humiseal says: Thermal Properties The coating must be able to withstand localized thermal 'hot spots' generated by components. High temperatures can cause short-term changes in coating characteristics, such as softening and lowered e
Electronics Forum | Fri Sep 02 16:30:02 EDT 2011 | duso02
Rich That is a standard reaction with Humiseal 1A33, nothing to worry about. Find a board that was coated over year ago and had been heated up at all and it will be an amber color. It does not violate the IPC for discoloration. We have coated boards
Electronics Forum | Mon Aug 14 15:00:46 EDT 2017 | charliedci
We run a "no clean" soldering process, class II primarily, conformal coating using a Humiseal acrylic coating, applied by machine and by brush. We have seen very few coating issues in my 10+ years from contamination by body oils. We are not using glo
Electronics Forum | Tue Aug 14 16:21:47 EDT 2018 | dontfeedphils
I'm looking for a strong, universal urethane coating remover/cleaner. It'll be used for cleaning equipment, mostly metal pieces, so I'm not worried about material compatibles. Just looking for the strongest, universal urethane conformal coat remo
Electronics Forum | Mon Jul 20 15:53:10 EDT 2020 | robl
Tape test to check adhesion and multiple point thickness test - each board has 5 points per side documented for thickness testing & we measure pre & post coating thickness with an electronic meter. Also temp & humidty are also logged, and alarms go o
Electronics Forum | Thu Aug 20 07:11:25 EDT 2020 | sssamw
What your said looks like a acrylic coating thermal expansion causes small solder joint crack. Do you cure coating with heating, or heating after curing? Solder joint crack while you see resistor and QFN trouble? Clear and detail description of your
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