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 …
Using a slow rate of pulsed ultrasonics is an excellent way to speed the degassing of liquids in preparation for use in ultrasonic cleaning and rinsing applications. The blog Ultrasonics – How to Degas Liquids explained the mechanism by which dissolved gasses are extracted from liquids by ultrasonic cavitation. Although this degassing mechanism is very effective …
Certain benefits can be derived in ultrasonic cleaning and processing by “pulsing” the ultrasonic generator. In fact, different pulse rates and duty cycles produce different benefits. This blog explores how “pulse” works and how its variants benefit ultrasonic cleaning in different ways. An earlier blog described the basic function of the ultrasonic generator. Ultrasonics – Ultrasonic Generator …
It occurred to me several years ago that when we look at an ultrasonic cleaning tank, we are usually looking in from the top. I wondered how ultrasonics looked from a “fish eye” view which spawned (get it?) what is now called the ultrasonic fish tank in our Jamestown, NY laboratory. In upcoming blogs, I …
A previous blog Ultrasonics – Degassing – What Gas? and Why? revealed why dissolved gas is detrimental to ultrasonic performance. This blog will describe various ways in which dissolved gas can be minimized and eliminated to facilitate ultrasonic cleaning. Since the most common liquids used in ultrasonic cleaning are water and water-based solutions, the following applies …
Although the importance of “degassing” liquids prior to their use in an ultrasonic cleaning or rinsing process is pretty much common knowledge, the source of the gas and details of how to remove it are less well known. This blog is the beginning of a series which will describe in some detail where that gas comes …
In the blogs about transducers I made a point of telling readers that an ultrasonic transducer must be driven at its resonant frequency to achieve optimum performance. What I didn’t address, however, was the fact that the resonant characteristics of a transducer can be varied by its design. Not only the resonant frequency but the “sharpness” or “Q” …
In an ultrasonic cleaning system, the device that provides the electrical energy to power the ultrasonic transducers is known as the ultrasonic “generator.” Basically, the ultrasonic generator converts electrical energy received from the power line into electrical energy with the proper frequency, voltage and amperage to power or “drive” the ultrasonic transducers. In most cases, …
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 …
Today’s ultrasonic transducers utilize either the piezoelectric or magnetostrictive effect of materials to produce ultrasonic waves in liquids. This blog will concentrate on the magnetostrictive ultrasonic transducer. Magnetostrictive Transducers – Magnetostrictive ultrasonic transducers utilize the principle of magnetostriction exhibited by “ferromagnetic” materials which include iron, nickel and cobalt as well as many alloys of these …
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