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 | Thu Apr 01 09:10:55 EST 2004 | cyclopsn
We are currently using non clean paste and non clean flux in our manufacturing process. But recently our customer feedback that using a non clean process might cause flux blockage in via hole area and potentially might burn or explode the boards over
Electronics Forum | Thu Apr 01 22:06:58 EST 2004 | Ken
How high a voltage? TV products use hundreds of volts on the vertical and horizonatal sync circuits. Historically, these consumer products were NOT cleaned. For your situation, contact your paste supplier.
Electronics Forum | Sun Apr 04 10:20:26 EDT 2004 | cyclopsn
Hi Ken I'm not so sure about the voltage level but I'm dealing with backplane boards. Michael, Thanks for the information, I dont mind changing the process but I need to understand why I needed to do do. That is only my concern.
Electronics Forum | Fri Apr 02 00:16:18 EST 2004 | Mike Konrad
There is no shortage of reasons to clean your boards. Soldering or reflowing your boards leaves �stuff� on them. This �stuff� is normally corrosive and conductive (some fluxes / pastes are more corrosive / conductive than others). In either case,
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 | 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 | 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 | 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
.gif)
