Electronics Forum | Thu May 09 10:12:08 EDT 2013 | wahahasteven
this is one of my project. I have tried to remove coating only on those areas with alcohol and thinner, then program the machine to coat the removed area again. But the result obviously shows that two different tones of coating on the board. I also
Electronics Forum | Wed Jun 29 03:37:53 EDT 2005 | lupo
Hi, I think that the time depends on the type of stainless steel, temperature and solder alloy. For example, one of our machines is delivered with 316 stainless pot and alloy SnNi. It worked six months (120days*16hours = 1920hours) and aft
Electronics Forum | Tue Jul 30 17:45:56 EDT 2002 | davef
What's this 'metalic coating on both sides'? Is that like a 'two-sided board'? I expect that your 200�F is the primary side temperature just prior to entering the wave. If not, you need more juice [depending on your flux and all that]. [Some mode
Electronics Forum | Thu Aug 01 10:09:31 EDT 2002 | sueph
Dave, I would have never thought of the sheet metal box. My west coast contact, who has dealt with this type of board before, told me yesterday to go ahead and try it at this profile anyway, as the metal plating holds more heat. I was pleasantly
Electronics Forum | Wed Jul 31 17:25:39 EDT 2002 | sueph
Dave, thanks for the reply. These boards have metal plating covering 99 percent of both primary and secondary surfaces. The only places without the metal plating are the extreme outer edges and about an 1/8 inch surrounding the plated holes. We do
Electronics Forum | Fri Oct 07 08:48:45 EDT 2016 | davef
Two things ... A friend in the contract coating business said: "... the board is not being baked out long enough, 30 min is certainly not long enough depending on how many layers this board is, as the vacuum (from the parylene process) is pulling t
Electronics Forum | Thu Oct 06 12:18:31 EDT 2016 | davef
Looks like moisture bubbling out of the board. I doubt that your baking at 60*C for a half hour is going to do very much to dewet the board. 60*C is warm to the touch, that's it!!! Water boils at 100*C. 60*C is the temperature of a cup of Dunkin. Cr
Electronics Forum | Tue Aug 06 08:54:21 EDT 2002 | mike
I have two basic questions: 1. We have a number of small convection ovens and want to modify some of these for baking out parts when needed. We have tried pumping nitrogen into these but I still run between 35 and 50 RH. Has anyone tried converting a
Electronics Forum | Wed Jul 20 15:18:35 EDT 2005 | FW
Hi! We have both Dip & Spray conformal coating processes & have never done any kind of baking before the process! I am assuming the reason for baking would be the same - ie, remove any moisture on the brds since moisture will create failure of the co
Electronics Forum | Tue Sep 21 11:34:10 EDT 2004 | davef
Several things to check are: * Ask Multicore if their flux res and your conformal coat are compatible. Conformal coats and NC flux res are notorious for having compatibily issues. * Conformal coat a bare board to determine if there is there is enoug
