In the blog “Reader Questions – Monitoring Ultrasonic Transducers,” I suggested a couple of ways one might test individual ultrasonic transducers to assure they have not become ineffective due to de-bonding from the cleaning tank. In an extension of the spirit of that blog, quality control measures for ultrasonic cleaning performance, I decided to check out a paper I …
Before we get to today’s topic, we have an announcement! Many of you may have recently subscribed for email updates of the blog either on your own or as a result of emails sent out by the Cleaning Technologies Group. The names of those of you who did were entered into a drawing for an ipad (wish I could …
In the blog entitled The Lowdown on Dirt, the three basic classes of contaminants were described. They are – soluble, particulate and a mixture of soluble and particulate. There are, of course many hybrids and permutations but for purposes of discussing the ultrasonic effect on cleaning we’ll limit to these three for now. Later on we can …
In most manufacturing processes where metal is formed or cut, oil is used in one form or another as a lubricant. Oil and other lubricants, in order to do their job, are formulated to have very low surface tension, and, because of their low surface tension, are difficult and often impossible to control or confine. Oil spreads …
There are four basic variables that, combined, establish the success or failure of any industrial cleaning process. The variables are Time, Temperature, Chemistry and Agitation. Although there may be additional variables – things like fixture design and variations in the process prior to cleaning – which can have major impact and, in fact, make or …
Many cleaning specifications call for “Spot Free Drying.” I have always taken this to mean that there should be no visible water (or other) spots on the parts once they exit the cleaning process. The offending spots are usually created when water evaporates leaving behind a solid residue. The resulting residues or spots are cosmetically …
The use of some kind of chemistry is an important and unavoidable part of most industrial cleaning processes. Chemistries can remain effective for as little as a few hours or as long as a year or more depending on the chemistry and how it is used. In the end, however, cleaning chemistry must be disposed …
There’s an old adage – “One Hand Washes the Other.” Although this adage is seldom applied to cleaning technology, it certainly could be. In fact, most successful cleaning consists of a combination of chemistry (soap, solvent or whatever) and some kind of added mechanical force to enhance or enable the cleaning process. If one could …
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