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Since we are going to be talking about cleaning, or, more specifically, industrial parts cleaning, it’s probably best that we define what we mean by “cleaning.” The term is used quite loosely to define a variety of process not all of which are really “cleaning.” “Cleaning” is the removal of the stuff that we usually … Continued
Hi, I’m John Fuchs and I’ve been asked by CTG to come back from the depths of retirement to host the NEW CTG Clean Blog. Many of you know me as the “slinky guy” or just “guru.” In over 40 years working with hundreds of users and a variety of industrial cleaning technologies I’ve accumulated … Continued
Since DI water quality is critical to many cleaning processes, it is important to understand its behavior. In too many cases, the quest for numbers results in high costs in the use of DI water. In short, delivering super-high resistivity water does not always have a significant impact on the resistivity of de-ionized water in the ultimate application. … Continued
The term “near field” is not new to ultrasonic cleaning. In general, it refers to cleaning parts in near proximity to the ultrasound source. It is well known that increasing ultrasonic power density can produce improved cleaning results in many cases. Increasing power density can be accomplished by reducing the size of the cleaning vessel to … Continued
If you are squeamish about electricity or don’t care about electricity you may want to skip this one. But we’re going to talk about some things at are pretty neat, central to the world of electronics and downright cool if you’d like to stick around. Recent blogs have talked about resistors, capacitors and inductors which, … Continued
The blog Ultrasonics – Ultrasonic Generators – Power Control discussed several ways in which the power delivery of ultrasonic generators can be varied. One of the ways is by modulating the amplitude while another is through the use of time proportioning or duty cycle modulation. There are other ways as well, but these are the … Continued
A reader has asked for a description of how “near field” ultrasonics works. First of all, the term “near field” is one that is not well defined in the ultrasonic cleaning world. For the purpose of this discussion regarding ultrasonic cleaning, “near field” means putting the ultrasonic source close to the work piece. It may … Continued
The purpose of fuses is relatively easy to grasp. A fuse interrupts a circuit (turns off) if the current flow (amps) is more than expected or more than the circuit components including wires etc. can safely handle. High current is usually the result of a short circuit, the failure of a device connected to the … Continued
My recent blog, Are Ultrasonic Power Ratings Real?, prompted a response from my friend and colleague William Puskas. Some of you may know Bill as the “Father of Sweep” as he was the first to implement frequency sweeping technology in ultrasonic cleaning equipment decades ago. He is also the author of a significant number of … Continued
Using a vacuum to assist or effect total drying is not a new concept. A reduction of air pressure lowers the boiling point of water and other liquids and thereby speeds their rate of evaporation. Although not practical in many applications for reasons I will discuss below, vacuum drying remains a viable alternative in some specialized applications. … Continued