The Effect of Physical Chemical Properties on Ultrasonic Performance

Successful ultrasonic cleaning processes utilize a combination of mechanical action provided by the formation and implosion of cavitation bubbles and  chemistry that dissolves and/or promotes the wetting and transfer of mechanical energy to dislodge the contaminants to be removed.  The interactions and effects of chemistry on the ultrasonic process obviously exist but are not well …

Ultrasonic Tank Squeal

If you work around ultrasonic cleaning tanks you have probably heard a tank “squeal.”  If you’ve never heard this, (1) consider yourself lucky and (2) be aware that a “squeal” is not the normal hissing sound associated with an operating ultrasonic tank but, rather, an extremely high amplitude sound at an audible frequency that can …

Soluble or Not?

The physical laws of liquids are a little complex yet a general understanding of them is important to understanding the mechanics of cleaning chemistry in the removal of both soluble and not-so-soluble contaminants from parts.  The general concept was discussed in the blog Chemistry – Solvent Characteristics. This blog will take things a bit further. Question …

The Benefit of Ultrasonic Cavitation and Implosion in Cleaning to Remove Particles

An earlier blog discussed the mechanics of ultrasonic removal of soluble contaminants.  In many cases, however, it is not the soluble contaminants but, rather, particles that are the primary target of ultrasonic cleaning.  Particles of concern range from a fraction of a micron to several hundreds of microns in size.  Something larger than a BB …

Pros and Cons of Tank Bonded vs. Immersible Ultrasonic Transducers

Note – Before we start, there is a nomenclature conundrum when it comes to the term “ultrasonic transducer.”  Through convention, transducer elements, the individual devices that produce ultrasonic vibrations (much like an individual radio speaker), are commonly called “transducers.”  A number of transducer elements working in parallel constitute a transducer array but may be called …

The Benefit of Ultrasonic Cavitation and Implosion in Cleaning to Remove Soluble Contaminants

Ultrasonic cavitation and implosion provide a unique benefit in cleaning unmatched by other means.  So much so that ultrasonic cleaning is often used as a benchmark to judge the effectiveness of other cleaning techniques. The major factors in cleaning are Time, Temperature, Chemistry and Mechanical Effect or Motion (TTCM).  There are other acronyms for these …

Cavitation Bubble Implosion Video!

After God knows how many years of looking at that one image of a cavitation bubble presented endlessly with different color variations etc. to “freshen it up” there has emerged some exciting new footage of actual cavitation bubble implosion!  Now, as a start, I don’t think these bubbles, at least the first ones, are the …