Electronics Forum | Mon Oct 14 14:46:10 EDT 2002 | sueph
Does anyone have a calibaration pocedure for flat radiant panel preheaters used in wave solder. Any info would be greatly appreciated.
Electronics Forum | Fri Jan 23 03:19:23 EST 2004 | Erv
We have very good results with a mixture. Lower 1st and 2nd preheat is convection, 3rd lower is calrod. No upper 1st and 2nd, 3rd upper is IR. With this combination I have found no challenge that could not be turned into a good profile.
Electronics Forum | Wed Nov 02 12:08:40 EST 2005 | chunks
It could be lack of preheat or flux. You can verify the flux by hand applying. I'll bet it's lack of preheat though. That's usually the case with selective solder.
Electronics Forum | Mon Oct 30 09:47:56 EST 2006 | pjc
If you are using VOC free flux, then forced convection preheats are better at evaporating the water. That may be why you're getting the "splatter". Plus, forced convection preheaters are most efficient at thermal transfer. See if you can get one to p
Electronics Forum | Mon Mar 12 14:08:03 EDT 2007 | coop
Thanks to all for the input I will try the preheating the "blank" out of it too. the preforming Idea I had wasn't the problem. I'll slow down conveyor speed and increase the preheater temp.
Electronics Forum | Mon Nov 19 14:10:13 EST 2007 | realchunks
Hi Taint, Both machines work OK. The big thing you may over look is pre-heat. Things like flux spatter/boil tend to come into play if you don't pre-heat. Change over, ease of programming, and service are also things to think of.
Electronics Forum | Fri Feb 22 15:23:54 EST 2013 | tkotwal
Thank you for the advice. I have the same concerns with applying that much heat from a single point, so I will probably go with a Zephyrtronics preheater. Tom
Electronics Forum | Sat Sep 12 09:49:38 EDT 2015 | davef
If the boards were still "wet" after DI wash, your [I assume] low res flux could be reacting with the moisture on the board and causing the white spots. The preheater in the wave could have more dryification than the preheater on the selective solde
Electronics Forum | Thu Nov 16 08:57:00 EST 2017 | jandon
We found used Ersa HotFlow 2/14 reflow oven that does not have bottom side preheaters. Can it be easily and safely used in normal high mix/low volume production or is it built for specific products which does not need bottom preheaters?
Electronics Forum | Wed Feb 19 06:14:06 EST 2020 | toki
I would like to know when to consider top preheaters in a wave soldering machine. I am very new to this field. All responses are appreciated.
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