This blog wasn’t meant to be a April Fool’s day piece but the more I look at it, it might suffice. Sorry it’s a couple of weeks late! For most engineers, words are usually a more or less “get-R-done” proposition. As an engineer, then, I may be a bit weird in that I really pride myself …
The word “passivation” is one that is thrown around quite a bit in the metal finishing and cleaning world and seems to have a world of different meanings to different people. Although the word passivation is normally associated with stainless steel, there are several other metals that can be “passivated” in one way or another. …
Over the years I have had many hundred people approach me with potential applications for ultrasonic deburring. There are many references to ultrasonic deburring in the literature going back decades in time so it’s not unlikely for the question to be asked. In fact, ultrasonic deburring may have limited application but requires certain very special circumstances in order …
Well, sometimes stuff happens! As I was checking the blog today I discovered that the wrong sound clip somehow wormed its way into yesterday’s blog Sounds of Silence – Pulse Period and Duration I have made the appropriate correction and now the sound clips in the published blog are actually the ones that they should …
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 …
Pressure regulating valves were discussed in the preceding blog Valves – Pressure Reducing Valves. Pressure reducing valves, although commonly used where pressure is an issue, are not always the best alternative. The pressure reducing valve has a close cousin called a “Back Pressure Regulating Valve” which monitors and controls pressure in a similar but different …
It is not an uncommon practice to use flow restricting valves in an effort to reduce and/or control pressure in even the most sophisticated industrial cleaning machines. In the blog “Reducing Flow vs. Reducing Pressure – Which is it?” the risks of using flow restricting valves to control pressure were discussed in some detail. Reliable pressure control …
There is often a need in any system involving flow of a liquid to control the flow and/or pressure of that liquid. Since the two are different and yet inter-dependant, it can be confusing when trying to determine if flow control or pressure control is the intended goal and how it will be best be accomplished. Unfortunately, a wrong choice …
“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 …
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