Electronics Forum | Thu Jun 14 04:24:32 EDT 2012 | brettrenishaw
Yes pads are still gold after the wave soldering process even if you wave solder a pcb several times. I have tried soldering using an iron and the solder takes to the pad as you would expect. This happens on all boards of this type and all boards are
Electronics Forum | Thu Sep 21 10:52:43 EDT 2006 | russ
Could you not just switch to alcohol based flux? If your prob is getting the water off the board prior to hitting the wave, maybe you could install some type of convection to aid in this? Russ
Electronics Forum | Fri Jun 22 07:16:37 EDT 2012 | brettrenishaw
Spray fluxing yes but have checked the uniformity by using a fluxometer. Also have put boards through with only flux and preheat. no wave up to see if the carrier is being burnt off. I will look into the skip plating issue. Thanks again
Electronics Forum | Wed Nov 01 15:07:46 EDT 2017 | mario
Hi my wave is down and I am having a hard time to find a repair guy in the Ottawa/Montreal region. Anybody has a contact for me?
Electronics Forum | Tue Dec 13 06:56:27 EST 2005 | adanhn
Hi Steve, What I came up with for our Soltec Sigma 6621 is to make a stainless steel wave solder bath insert.The insert with all its components eg. impeller, Chipwave assy, pump shafts, main wave assy etc. I will send for plasma nitride coating.Afer
Electronics Forum | Wed Sep 20 12:14:08 EDT 2006 | Rob
Good question - as it is a water based flux then you are going to get a very low level of solvent evaporation, and it's hardly going to be absorbing additional water whilst sitting around. (you actually want the water (carrier element) to evaporate).
Electronics Forum | Mon Jun 26 14:36:44 EDT 2000 | Tekguy2000
Then if you have R-Paks on the solder-side start all over again!!
Electronics Forum | Wed Jun 13 20:38:23 EDT 2012 | kahrpr
It is possible that there is nickel contamination in the gold. Depending on your plating board vendors put nickel down first. The plating also could be to thin. Dave had a good suggestion in trying to solder the pad with a Iron that will tell a lot.
Electronics Forum | Fri Jun 15 11:22:14 EDT 2012 | hegemon
Good info above from davef Solder pot contamination seems likely, are you using any dross reducers or additives that might be reacting with this particluar batch of PWBs? 'hege
Electronics Forum | Tue Mar 07 16:14:10 EST 2023 | proceng1
We use Nitrogen to inert the Selective Solder, as well as spray flux. We have Onsite Nitrogen Generators.
