Electronics Forum | Tue Jul 30 12:19:38 EDT 2002 | sueph
I am trying to get a profile on a thru-hole board with metalic coating on both sides. My preheaters are about maxed out and my profile is just reaching 200 degeres F. I'm not sure how much I can slow my conveyor down to get more heat. Does any one h
Electronics Forum | Wed Jul 31 17:57:11 EDT 2002 | davef
Foam fluxer, ouch!! That hurts. How about this? * Make a sheet metal box to cover your preheaters. [If your boss is really cheap, make a 'box' with 1/2" chicken wire and cover it with aluminum foil.] * Prebake the blank out of the boards, bag the
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 | 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 | 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 | Wed Jul 06 20:15:51 EDT 2005 | Gary Bremer
The good old days weren't all that bad. When I needed to have a specification callout for a conformal coating on an engineering drawing, I just used MIL-I-46058, type UR (for example), and the drawing checkers were quite happy. Since MIL-I-46058 ha
Electronics Forum | Tue Jul 06 01:35:11 EDT 2004 | SSS
Dear Sir, We have a urgent requirement of conformal coating. Please let us know who are the suppplier available in india. And what is the process to do the same. 1. What is critical point 2. What machinery required 3. Process of doing Conformal Coat
Electronics Forum | Tue Feb 10 13:59:29 EST 2004 | Vadim
At times the orange peel effect can be from excess flux improperly removed. Our company strictly provides the service of selctive conformal coating application. We quite often see this. Most times if the board is simply "water washed", or IPA washed,
Electronics Forum | Tue Feb 10 14:02:03 EST 2004 | Maryann
At times the orange peel effect can be from excess flux improperly removed. Our company strictly provides the service of selctive conformal coating application. We quite often see this. Most times if the board is simply "water washed", or IPA washed,
Electronics Forum | Mon Jan 26 19:51:48 EST 2004 | davef
You should be able to obtain a smooth finish. A "glass-like finish" is in part a function of the coating material, assuming good process. When we see "orange peel" conformal coating, we think moisture from the spray room environment, conpressor, et
