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Saturday, January 14, 2012

What is a Ultrasonic cleaner

    An ultrasonic cleaner is a cleaning device that uses ultrasound and an appropriate cleaning solvent (sometimes ordinary tap water) to clean delicate items. The ultrasound can be used with only water but use of a solvent appropriate for the item to be cleaned and the soiling enhances the effect. ultrasonic cleaning normally lasts between three and six minutes. Ultrasonic cleaners are used to clean many different types of objects, including lenses, jewelry and other optical parts, watches, dental, surgical instruments industrial parts and electronic equipment.

    ultrasonic cleaning equipment cleaning is a technology that uses high frequency sound waves (ultrasonic: above the range of human hearing) to agitate an aqueous or organic medium (cleaning chemistry) that in turn acts on contaminants adhering to substrates like metals, plastics, glass, rubber and ceramics. Contaminants can be dust, dirt, oil, pigments, grease, polishing compounds, flux agents, fingerprints, soot wax and mold release agents, biological soil like blood, and so on.

    An ultrasonic cleaner consists of an ultrasound generator along with special transducers mounted on the bottom of a liquid-filled stainless steel bath. The generator and transducer combo create alternating waves of compression and expansion in the liquid at extremely high speeds, usually between 25 and 130 kHz.

    Numerous gas bubbles are formed and expand in the liquid during the expansion phase. This is a low-pressure phase that in essence "cold boils" the water. The water vapor in the bubble condenses rapidly creating a vacuum-filled 'cavity'.
    In the compression phase, the great amount of pressure exerted on the newly expanded bubble leads to a sudden implosion of the bubble. The liquid molecules collide releasing a vast amount of impact energy that rapidly increases the local temperature producing a high-energy liquid stream that collides with the surface of the object being cleaned. This collision agitates contaminants adhering to the surface, effectively and efficiently dislodging them at micron levels.