Ultrasonic cleaning is a process in which high frequency sound waves are used to create cavitations of bubbles in cleaning baths to provide excellent cleaning. The sound waves and bubbles force a cleaning solution against the materials that are being cleaned. This type of cleaning method is ideal for cleaning all kinds of surfaces, including cracks and very small spaces. The process of ultrasonic cleaning is used to remove various types of substances such as: grease, stains, dirt, oil, mold, heat treatment scales and abrasive residues from surfaces that need to be absolutely clean before they are assembled or processed any further.
Ultrasonic cleaners form a part of the cleaning system, which may include other items such as: pre-cleaners, pumps or pressure generators, nozzles, agitators, reclamation systems, and ultrasonic transducers, etc. Before cleaning with an ultrasonic process, the parts need to be thoroughly cleaned with a pre-cleaning and a pre-rinsing solution to take out as many of the major contaminants as possible. This will reduce the cleaning load on the ultrasonic process.
There are two types of ultrasonic cleaners that are used, but they both really clean in the same way. Both of these types attach to a tank where the objects that are being cleaned are submerged. One type of ultrasonic cleaner is a piezoelectric transducer. These cleaners are relatively inexpensive however they aren’t really designed to handle the rigors of heavy duty industrial cleaning. Another type of cleaner is a magnetostrictive transducer, which generally lasts longer than the piezoelectric transducer. You can place ultrasonic cleaners anywhere on the tank, such as the side, top or bottom or you can submerge them in the solution in a water-tight compartment.
Ultrasonic cleaning is done using ingredients such as aqueous solutions, hot water, solvents and vapor. The pharmaceutical industry regularly uses ultrasonic cleaning methods to thoroughly clean and sterilize various types of surfaces. After the parts are ultrasonically cleaned, they should not be touched by bare human hands but should be handled with clean, work handling systems.
The type of cleaning solution that you need to use will depend on what object is being cleaned and if you heat the solution it will generally increase its cleaning power. However, make sure that you don’t boil the solution as it can interfere with the ultrasonic process.