A previous blog Cleaning – Soluble Contaminants – “Solvents” described soluble contaminants as those contaminants that can be dissolved using a solvent or engineered liquid such as a surfactant. Contaminants that are not soluble are the other distinct classification of contaminants. Sometimes the line between soluble and insoluble is not well defined since there are …
I would like to take this opportunity to wish everyone a Happy Thanksgiving. This is a time for family and friends. We all have a lot to be thankful for. The blog will be back on Monday. – FJF –
Today’s blog is responding to two questions asked by readers. Both concern monitoring of ultrasonic transducer performance. Ralph Clendenin asks – “Is there a measurement of the frequency I need to be aware of during “good” operation I can check monthly that would show reduction in cleaning due to change in frequency?” Stephen Sharkey asks – …
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 …
The preceding blog addressed the most common service issue with ultrasonic equipment, the ultrasonic generators, along with Preventive Maintanance measures that can help minimize generator failure events. Today’s blog will cover additional Preventive Maintenance measures which apply not only to ultrasonic cleaning equipment but to the broader range of cleaning equipment of all types as …
Reader’s Questions The blog welcomes reader’s questions and comments related to cleaning. Just forward questions or comments to jfuchs@ctgclean.com. Provided I know the answer to your question, I will either answer it by email or, if the question is of general interest, I will answer it in the blog. If I don’t know the …
In the blog Cavitation 101, cavitation in liquids was described as the backbone of ultrasonic cleaning. Cavitation by itself, however, is not the end of the story. Although cavitation is the backbone, the real work is accomplished by the implosion of cavitation bubbles. Cavitation bubbles are, in essence, pockets of vacuum or vapor of the surrounding …
Cavitation of liquid due to high amplitude ultrasonic vibration within the liquid is the backbone of ultrasonic cleaning. Liquids have the unique ability to cavitate. In order to cavitate, a material must exhibit three properties – It must be relatively inextensible and uncompressible. It can’t be able to stretch or expand or be compressed to significantly change …
Two of the major variables in the production of mechanical vibration are frequency and amplitude. The consequences of frequency variation were discussed in a preceding blog. Today’s blog concentrates on amplitude and the power implications of varying either or both frequency and amplitude. As discussed in the blog titled Ultrasonics-Sound-Amplitude, the amplitude of a vibration …
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