I’ve made reference in the blog before to the fact that some surfaces are good candidates for ultrasonic cleaning while others are either difficult or impossible to clean. In general, surfaces that are hard (metal, glass) are easily cleaned using ultrasonics while softer surfaces (rubber, soft plastic) resist ultrasonic cleaning. The reason has to do …
We all know that temperature is an important parameter in cleaning and cleaning-related processes. Too little and cleaning will be ineffective. Too much can lead to possible chemical separation, part degradation and loss of ultrasonic cavitation. So providing the proper temperature is mandatory for the best cleaning result. Sounds easy? Well, yes and no – consider …
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 …
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 …
Sweep in ultrasonic lingo simply means varying the ultrasonic frequency up and down. A sound clip in an earlier post demonstrated the sound of sweeping the ultrasonic frequency. Single Frequency Sweep In an earlier post we also learned that ultrasonic transducers have a property called “resonance.” Very simply, this means that they will make a …
In today’s blog we once again bring ultrasonic sounds into the range of human audibility and listen to the sound of frequency sweep. Previous blogs have revealed the sound of amplitude modulation and pulse modulation. Frequency sweep is all about frequency – ideally there is no change in amplitude as frequency is varied. In some …
Today we are, again, going to bring ultrasonic sounds into the realm of human audibility by lowering the frequency to ones that most people with normal hearing can hear. Several preceding blogs have discussed the effects of varying the pulse width and pulse period of an ultrasonic generator in an ultrasonic cleaning system. If you’ve …
“Pulse” in ultrasonic terms simply means turning the ultrasonic energy on and off repeatedly in either a fixed or random pattern. At first it seems this would would be counter-productive to the goal of maximizing the ultrasonic cleaning effect. In fact, the blogs Ultrasonics – Ultrasonic Generators – What Is “Pulse” and Ultrasonics – Ultrasonic …
Today’s blog will let you actually hear some of the qualities of sound that are important to successful ultrasonic cleaning. Since we humans can not actually hear ultrasound by definition, the sounds you hear will be “translated” into a sound range that we can hear. A good starting tone is 1,000 Hz. Sounds at 1,000 …
Of the five senses, hearing would probably rank #2 in importance to most people with sight being the most important. I, personally, rank hearing as #1 in importance for me although I won’t get into the details of why that is so. I’ve been exposed to ultrasonic sources for my entire working life and, over the years, have tried …
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