Ultrasonic cleaning uses cavitation bubbles induced by high frequency
pressure (sound) waves to agitate a liquid solution. The agitation
produces large forces on contaminants adhering to substrates such as
metals, plastics, glass, rubber, and ceramics. This action also
penetrates into blind holes, cracks, and recesses. The intention is to
thoroughly remove all traces of contamination tightly adhering to or
embedded in solid surfaces. Water or solvents can be used, depending on
the type of contamination and the workpiece. Contaminants can include
dust, dirt, oil, pigments, rust, grease, algae, fungus, bacteria,
limescale, polishing compounds, flux agents, fingerprints, soot wax and
mould release agents, and biological soiling including blood.
Ultrasonic cleaning can be used for a wide range ofworkpiece shapes, sizes, andmaterials, and does not require the part to be disassembled prior to cleaning. Objects must not be allowed to rest on the bottom of the cleaning device during the cleaning process, because that will prevent cavitation on the part of the object not in contact with the liquid.
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