Electronics Forum | Tue Aug 27 08:13:29 EDT 2002 | mk
Our company uses a conveyorised aqueous cleaner to wash printed circuits after water soluble solder paste is reflowed. The system is closed loop with carbon and resin filters. The water eventually will get dirty. Can it be dumped? Treated? How do y
Electronics Forum | Sat Sep 07 06:57:33 EDT 2002 | mk
I agree but, are there really heavy metals in this water? Our process is as follows. Print Paste Reflow Board (no components, water soluble paste only) Wash Board Same reflow profile for almost every order so no solder balling issues etc. Carbon an
Electronics Forum | Sun Sep 26 05:27:35 EDT 1999 | Edmund
i had a problem here, during the wave soldering process, we apply a water soluble mask on the gold finger to protect it from contamination. But after washing, there is still some mask left on the gold finger. Can anyone pls advise is there any parame
Electronics Forum | Tue May 04 09:45:05 EDT 2010 | dyoungquist
Only use the shop air if it is clean and dry. I know from experience that one can get water and a little oil from the compressor in the air lines. We are in a drier climate with humidity levels in the 25%-35% range on average. All we do is let the
Electronics Forum | Tue May 04 12:43:55 EDT 2010 | rgduval
Good point on the shop air. Shop air can also generate a tremendous amount of ESD. There are special nozzles you can get to minimize it. We use our shop air mostly for blowing out connectors, and larger components that have a history of trapping w
Electronics Forum | Sun Sep 26 11:54:06 EDT 1999 | Earl Moon
| i had a problem here, during the wave soldering process, we apply a water soluble mask on the gold finger to protect it from contamination. But after washing, there is still some mask left on the gold finger. | Can anyone pls advise is there any pa
Electronics Forum | Wed Sep 13 12:36:14 EDT 2000 | Steve Thomas
In the following thread, http://www.smtnet.com/electronicsforum/view_message.cfm?message=9584& John Thorup touched on some applications where no-clean fluxes could be a bad idea. I'm looking for some more detailed info. (papers, references, texts
Electronics Forum | Mon Sep 27 08:52:11 EDT 1999 | Brian
| i had a problem here, during the wave soldering process, we apply a water soluble mask on the gold finger to protect it from contamination. But after washing, there is still some mask left on the gold finger. | Can anyone pls advise is there any pa
Electronics Forum | Tue Aug 28 11:54:25 EDT 2007 | rgduval
Dave, To tell you the truth, I couldn't tell you. I came into this company with the system installed. When the resistivity is depleted, I call Culligan. It may only be an in-line cartridge filter that they change. We've noted a change in water q
Electronics Forum | Mon Sep 09 19:17:56 EDT 2002 | dragonslayr
steve- once again I mention that the lead that is actually in the water is in solution i.e. the lead is in a molecular form that has attached to a H2O molecule. To have a minimum of lead that is below the regulated ppm, there cannot be any chunks,
.gif)
