Electronics Forum | Wed Dec 17 16:12:01 EST 2003 | Ashok Dhawan
Anyone who has experienced and resolved tarnishing of Aluminium surface upon cleaning with DI water + saponifier. The aluminium surface is protected with conversion coating (clear) which is turning black when exposed to saponifier solution.
Electronics Forum | Fri Feb 13 13:27:22 EST 2004 | blnorman
So Deionized water has high ion concentrations, never knew that.
Electronics Forum | Mon Dec 22 18:08:38 EST 2003 | Tom B
Dave is absolutely right! A question is there free standing DI water left on Parts after wash and rinse, if so this can definetly exacerbate the problem. You can try to remove excess DI water by using an IONIZER air source to blow off any water. S
Electronics Forum | Fri Feb 13 11:54:44 EST 2004 | Gary
We have an automatic washer that is using DI water in the final rinse for stainless steel surgical tools. Is this practical. Will it extented the life of the tools or just remove spots?
Electronics Forum | Fri Feb 13 12:16:05 EST 2004 | Mike Konrad
Ashok, It is most likely not the DI water that is attacking the aluminum rather it is the saponifier. DI water is only in contact with the parts for a relatively short time. If your cleaning process provides for a rapid drying cycle, you should be
Electronics Forum | Wed Dec 17 17:57:51 EST 2003 | davef
9. * Conversion coatings are very nice "paints" that allow other paints to stick to aluminum. Type 1 coatings are thicker than Type 3, which are whisper thin. Alodine 120X (Amchem) and Iridite 14-2 (Allied Research Products) are good conversion coa
Electronics Forum | Tue Jun 24 12:26:33 EDT 2008 | dyoungquist
We are purchasing an ultrasonic cleaner to clean pcb asseblies that have been produced with water soluble flux based solder. After cleaning a batch of assemblies, the water in the cleaner will need to be disposed of. My question is: Do we need to
Electronics Forum | Wed Jul 02 12:32:30 EDT 2008 | hegemon
We use a "water Eater" to boil off the water, it escapes as water vapor. The residue we collect and dispose of as part of out Hazmat process. Keeps everything out of the drains.
Electronics Forum | Tue Jun 24 14:47:25 EDT 2008 | bschreiber
There is also an article in the March 2007 issue of U.S. Tech magazine that reviews ultrasonic cleaning technology for PCBs titled "Reducing the Cost of Misprinted PCBs". The information is also relevant to post reflowed PCBs. A PDF copy of the art
Electronics Forum | Tue Jun 24 12:42:35 EDT 2008 | slthomas
Your flux residues may be acceptable for your drain, but the solder balls won't be. You'll need to filter and dispose of the filters per your local city, county, and state regs. Either that or just boil the water off and dispose of the dry remains wi
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