Electronics Forum | Mon Dec 28 09:12:56 EST 2009 | kpm135
@tommyg_fla According to the TDS the recommended coating thickness for Humiseal 1B31 is only 1-3 mils so if I had to guess I would say your issue might be that you're re-coating over the first pass too soon. All the solvent hasn't evaporated and the
Electronics Forum | Wed Jul 20 10:07:05 EDT 2005 | cecil
Does anyone have any input on the need to bake out an assembly prior to the conformal coat process? I understand baking out components/pwb's prior to processing through the reflow or wave solder process if the material shows excess moisture absorbtio
Electronics Forum | Wed Jan 31 10:56:23 EST 2018 | dontfeedphils
I'm working on bringing up a new conformal coat process/workcenter and have a few questions I'm hoping someone might have experience with. Right now we're manually spraying both coating materials (1B31 and 1A33 from Humiseal) using HVLP guns. I run
Electronics Forum | Thu Mar 25 19:19:08 EST 1999 | Graham Naisbitt
| I am looking into replacing another business division's Acrylic coating process with our Urethane coating process. Unfortunately, MIL-I-46068 doesn't differentiate AR/UR's performance, and the MFR data sheets don't match up at all (they each spec
Electronics Forum | Fri Mar 26 13:02:18 EST 1999 | Scott McKee
Sorry, in the following message I'm agreeing with Graham - not Greg... | | I am looking into replacing another business division's Acrylic coating process with our Urethane coating process. Unfortunately, MIL-I-46068 doesn't differentiate AR/UR's p
Electronics Forum | Tue Jul 31 10:16:59 EDT 2012 | silverbullet
We are in the process of revamping our conformal coating room. Presently, we have a C-740 Nordson Asymtek coating machine that sprays most of our boards with Dow Corning 2577. We are spending a lot of time masking boards and are thinking of upgrading
Electronics Forum | Fri Mar 26 12:59:51 EST 1999 | Scott McKee
| | I am looking into replacing another business division's Acrylic coating process with our Urethane coating process. Unfortunately, MIL-I-46068 doesn't differentiate AR/UR's performance, and the MFR data sheets don't match up at all (they each spe
Electronics Forum | Mon Mar 29 04:36:49 EST 1999 | Graham Naisbitt
Just for the record folks, The customer I believe may be manufacturing stuff for refuelling rigs of various forms. This being the case, the coating would need to be resistant against fuels and oils. The UR material (at least ours!) is able to resi
Electronics Forum | Mon Mar 29 19:17:47 EST 1999 | Scott McKee
How true, AR would not be the right choice... Scott | Just for the record folks, | | The customer I believe may be manufacturing stuff for refuelling rigs of various forms. | | This being the case, the coating would need to be resistant against f
Electronics Forum | Fri Mar 20 10:31:19 EST 1998 | Mick Jones
| I will be starting a conformal coating process soon, I am looking for any pointers on | 1) Best method for masking components, tape mask, liqued mask | 2) Which is best Spray or Dip? | 3) Compatiblity with no clean solder paste (flux residue) | I h
