Electronics Forum | Wed Jan 17 22:35:21 EST 2007 | JNet
Is the oven air or nitrogen? If it is air I would suggest more exhuast to pull the flux vapors out if the oven before they can condense in the cooling. If it is a nitrogn machine that makes it a little more complicated. If the filter system is clogge
Electronics Forum | Thu Aug 20 14:52:40 EDT 2009 | davef
Armando: We're guessing that the white residue is on the laminate also. We believe that the residue has something to do with your low residue flux and water. It could be: * Water contamination in the flux. * Poor selection of preheat temperature that
Electronics Forum | Wed Jan 17 21:40:49 EST 2007 | Sumbi
Oven keeps building up debri in cooling plates and flux system seems not very good. would preferr less maintance,no time. know of any work arounds.Oven is Paragon series.
Electronics Forum | Thu Apr 29 17:19:59 EDT 1999 | Kevin Hussey
Hi Boys and Girls, I've been given the "task" to turn off the nitrogen in our reflow ovens. I am using the BTU, TRS series ovens, each with eight zones. Also, I have a couple of new BT Paragon ovens with 10 zones. We currently are running Qualite
Electronics Forum | Fri Nov 20 11:21:37 EST 2009 | patrickbruneel
In 90% humidity it’s easy to get condensation. Condensation will create electrical failure when the board isn’t conformal coated. In your case the failure disappears when the humidity level drops so to me it’s unlikely that the flux has anything to d
Electronics Forum | Sat Jan 10 12:21:15 EST 1998 | eyal dickerman
If you are using water cooling in yr oven , look for flux condensation on the heat exchanger.
Electronics Forum | Fri Jul 26 14:36:31 EDT 2002 | blnorman
Is anyone aware of a fog test for flux or flux residues? Supposedly one of our vendors had a test, but we've lost the specifics. We're interested in finding out if after heating, some of the residues (retained volatiles, or whatever) will escape an
Electronics Forum | Tue Aug 13 16:47:22 EDT 2002 | mick
The residues are from the flux, not adhesive. Do you have flux management system in oven? You also need to check the flux type = can you use low solids. The effect is the same as steam in bathroom - it is cooling affects in exhaust and flux reforming
Electronics Forum | Thu Aug 22 15:31:52 EDT 2002 | Claude_Couture
In an oven with flux reclamation system, once the circulation is prevented by accumulation of flux in the heat exchanger, the flux will condense where it can, and some of it will coat your PCBs with a uniform layer of flux on the parts/ joints/ goldf
Electronics Forum | Sun Nov 22 09:36:17 EST 2009 | patrickbruneel
Dave, A low residue/No residue flux does exist that when an excessive amount of flux is applied it would only create a cosmetic problem not a reliability issue. The active ingredients are neutralized by the heat applied in the soldering machine and
