Electronics Forum | Sun Feb 07 12:18:58 EST 2010 | davef
The US military no longer approves repair processes. What coating material are you aiming to remove? Choices for stripping are: * Chemical solvents * Heat * Media
Electronics Forum | Mon Jul 26 16:28:49 EDT 2010 | mikesewell
Beyond just the cosmetic dewets reliability is very flux/coating dependent. Don't forget about any touchup or hand soldered parts after wave as well.
Electronics Forum | Wed Nov 09 09:27:44 EST 2011 | edmaya33
If you are using a Humiseal. try UV-40 gel which is about 20Kcps. it will dam your material from capillary flow. It should be applied prior to coating of your low viscous material.
Electronics Forum | Wed Nov 16 14:57:57 EST 2011 | austinpeterman
Hello Don, We dont heat cure any of our assemblies. We coat relitively few boards and just let them cure at room temp. Perhaps we should start heat curing. In fact, we have an old, fully functional, heller 1500 just sitting in storage. Hmmm. . .
Electronics Forum | Thu May 17 23:32:10 EDT 2012 | umar
Hi Dave, Thanks on yoru prompt reply, Can help to share whethere you had knowledge about this issues ?since I had a hot topic on this issues ? is my cleaning is not clean or is the saponifier chemical uyse is not compatable to the humiseal coating
Electronics Forum | Fri Jun 01 06:40:39 EDT 2012 | umar
Hi Norman... Thansk on yoru input, actually my adhesion test conduct is after pass of IC test. MY IC Test is shown a good result but when go into teh Test adhesion coating then during peel off test my board was failed.
Electronics Forum | Fri Jan 25 12:23:07 EST 2013 | dontfeedphils
By "they've been through the wash cycle twice" what do you mean? What kind of cleaning process do you use? What sort of chemistry? How do you handle the assemblies after wash and before coating? Do the operators where power free gloves? -Phil
Electronics Forum | Tue Feb 18 11:06:49 EST 2014 | cunningham
Does anyone do this? We have a small booth and lots of different kinds of media to try. it will be local stripping of coating on components for rework purposes. My main concern is ESD levels and how best to measure this. Any ideas or any papers o
Electronics Forum | Wed Feb 19 06:20:05 EST 2014 | bandjwet
These micro ablation stations can be outfitted with air ionizers and you can use less electronegative materials like corn starch as the blast media. Laser ablation works on parylene and other coatings when on metal surfaces. BWET
Electronics Forum | Fri Mar 04 08:25:57 EST 2016 | esoderberg
Try Humiseal 2A53. This is a very old 2-part epoxy coating that is still used by a number of companies as well as the military. Very hard to rework, transparent and may be what you are looking for
