A few days ago, one of our customers asked one of our sales people what would seem like a very simple question. The question, in paraphrase, was – – “Do you know the relationship between ultrasonic frequency and the ability of ultrasonics to clean within a certain sized orifice.” Being a bit rushed when I received …
As a leading ultrasonic manufacturer, we are often asked to manufacture large, industrial ultrasonic cleaning systems producing a particular ultrasonic power density based on laboratory trials. In fact, it may not be appropriate to base the watts per gallon requirement for a large industrial application on those found effective on a laboratory scale. A paper at the following …
Solvents are a bit difficult to understand for a number of reasons. Even for someone who has worked with solvents as much as I have, the permutations of solvents, their combinations and their capabilities are bewildering. But, let’s start with the simple stuff. A solvent dissolves what is called a solute. In what is probably the …
It doesn’t matter if you call it soap, solvent, surface preparation, or whatever, chemistry is an important part of nearly every cleaning process. The first purpose of the chemistry in a cleaning application is to either dissolve the contaminant or, using some other mechanism, to break the attachment that the contaminant has to the substrate. …
Blackstone Ultrasonics was founded in the mid 1950’s in the hope that the addition of ultrasonic agitation to a conventional clothes washer would revolutionize laundering of fabrics. It didn’t take long before it was recognized that ultrasonic techniques weren’t going to be effective – at least not by simply adding ultrasonic transducers to a conventional …
Gee Whiz! I was sure somebody would challenge me on the last blog about washing dishes at home. But, since there are no comments (or fire bombs) in my inbox, I guess everybody agrees that the most efficient way to wash dishes at home is the “old fashioned” way with a dish rag and dish drainer. …
Water, the “universal” solvent is the center of most cleaning applications in the home. Water, at least in my location in the US, is readily available, plentiful and relatively inexpensive. Water plus a small amount of overly expensive and competitively merchandised chemicals does an admirable job of cleaning dishes and clothes which constitute about 50% of …
The preceeding blog discussed what is probably the “granddaddy” of all cleaning challenges – burned-on carbon. But, as those of us who have been in the cleaning business since Noah launched the ark know, there are a bunch of other cleaning challenges that defy modern technology. In general, these challenges fall into a small group …
The technology of parts cleaning is a very sophisticated science today. Most cleaning challenges can be met with the proper combination of equipment, chemistry and technique. In my 45 year involvement with parts cleaning, I have seen many twists and turns along the way. Applications that were considered “impossible” 10 or 20 years ago are …
Previous blogs have explained the benefits of relative motion between the part being cleaned or rinsed and the liquid in contact with the part. Relative motion can be accomplished by moving either the part or the liquid relative to the other. Ultrasonic agitation has also been identified as beneficial to cleaning and rinsing for somewhat the …
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