Ultrasonic Jewelry Cleaner
An ultrasonic cleaner, also called a sonicator, is a cleaning device that uses ultrasound (typically from 150–400 kHz) and an appropriate cleaning solution, to clean delicate items. They are often employed for cleaning of jewelery, lenses and other optical parts, coins, watches, dental and surgical instruments, fountain pens, industrial parts and electronic equipment. In everyday use such devices may be found in use in most jewelry workshops, watchmakers establishments, or in electronic repair workshops.
In an ultrasonic cleaner, your object to be cleaned is placed into a chamber containing a suitable solution. An ultrasound generating transducer built into the chamber produces ultrasonic waves in the fluid by changing size in concert with an electrical signal oscillating at ultrasonic frequency. This creates compression waves in the liquid of the tank which ‘tear’ the liquid apart, leaving behind many millions of microscopic "voids" or partial vacuum bubbles".
The bubbles produced from the ultrasound collapse with enormous energy; temperatures of 10,000 K and pressures of up to 50,000 lbs per square inch. They are so small that they only clean and remove surface dirt and contaminants. The higher the frequency, the smaller the nodes between the cavitation points, which allows for cleaning of more intricate detail.