Production Machining

JUL 2013

Production Machining - Your access to the precision machining industrial buyer.

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Page 46 of 67

Ultrasonic Cleaning ?????? ltrasonic cleaning is a process with many applications. Te strengths of this cleaning method lie in the ability to precisely adapt the sound waves to the object to be cleaned and the specifc cleaning task involved. Ultrasonic cleaning also requires short handling times and less use of chemicals. Ultrasound has been used as a cleaning process for almost 100 years. It has spread into a wider range of manufacturing applications than almost any other cleaning technology because it enables efcient, gentle and rapid removal of particulate contaminants such as fne grains, chips and dust as well as the surface flms left behind by oils, emulsions and similar processing agents. It can even handle parts with complex geometries and inaccessible areas such as blind holes, crannies and undercuts. At the same time, the sound wave power allows reduced use of cleaning chemicals. U intensity of the sound wave pressure during the expansion phase of the ultrasound wave causes ruptures in the fuid, forming millions of microscopic bubbles. In the compression phase that follows, these cavitation bubbles become unstable and implode. A high hydraulic pressure with signifcant energy density is generated, causing microstreaming in the fuid. When these microstreams :: Rod-type and immersible transducers are the most commonly used oscillator systems in industrial component cleaning. Photo Credit: Weber Ultrasonics Reduced Cleaning Time Te sound waves for ultrasonic cleaning are produced by a generator that converts the normal supply frequency of 50-60 Hz into high-frequency oscillations. Te electromagnetic oscillations are then converted by an audio transducer into mechanical vibrations at the same frequency, and these are transmitted into a fuid bath. Tis process produces a physical efect known as cavitation: Te high The sound waves for ultrasonic cleaning are produced by a generator that converts the normal supply frequency of 5060 Hz into high-frequency oscillations. :: 45

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