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Megasonic sweeping crest ultrasonics


The second frequency required by the process was then supplied to the transducer array by first disconnecting the prior frequency generator and then connecting the generator producing the second sweeping frequency.
This frequency switching was done safely by electronic control of the relays and took less than one second of degas time to complete a amart promo code frequency transition.It provides a wide range of standard and custom machines that are shipped throughout the world.5,909,741 Ferrell teaches two arrays of transducers on different angled walls of a plastic container and driven by different frequency generators.If the bubble grows within a confined area too small turf rebate program to allow it to reach an unstable size, it will either not form, or just oscillate and degenerate without ever imploding.Cavitation bubbles, once formed, either continue to oscillate for a period of time and then degenerate or ultimately grow to a size that can not be sustained and collapse or implode releasing a shock wave which radiates in a jet from the point of collapse.Generator Frequency : 470KHz, generator Power : 400 watts average maximum power per module 450 watts line power consumption at 200/240 volts.
Figure 7 The above chart graphically illustrates the effect of operating a single array of universal transducers at three frequencies sequentially.
The above establishes frequency as an important variable in the ultrasonic cleaning process.In 2000, CAE Ney Ultrasonics replaced the primitive system and sold generators that produced multiple frequencies to drive universal transducers at frequencies selected by a binary code as programmed by a PLC.The universal transducers produce ultrasound at each of the generators operating frequencies.Second, the two or more different frequency transducer arrays on a given amount of radiating diaphragm surface results in lower power at each frequency.This paper explores the hardware alternatives for producing multiple ultrasonic frequencies and their relative merits.Although three frequencies are used for illustration here, the concepts discussed here may be applied to any number of frequencies.Figure 5 In example A, transducers with different operating frequencies are all attached to the same cleaning tank.Synchronized sweeping frequencies in succession prevent this damage.



The reason that the destructive and constructive interference of the different frequency sound waves results in less transient cavitation compared to sweeping single frequency systems is because the resultant wave in the liquid has many frequencies that typically exist for one cycle or less.
This phenomenon, caused by friction, limits relative motion of a liquid near a surface with which it is in contact.

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