DMS-R-IM
Fundamentals of Ultrasonic Cleaning
April 7, 2021
Digital Modular System - Rinse
7-2
Factor
Description
Degassing
As the cavities form, they fill with unwanted air bubbles
that resist collapse and tend to remain suspended in the
water. This is usually undesirable in ultrasonic cleaning
because the bubbles act as “shock absorbers” and reduce the
scrubbing effect.
It is possible to reduce unwanted air in the cleaning solution
by modulating the sound energy to permit adjacent bubbles
to coalesce, float to the surface, and escape. This modulation
must be matched to the particular process and effects
desired.
Crest ultrasonic cleaning systems exclusively feature
“
Simultaneous Multi-frequency
” and two modes of gassing
modulation, thus offering maximum versatility in
degassing.
Electrical
Frequency
Low frequencies such as 25 kHz generate large, but
relatively few, cavities with high cleaning power. High
frequencies such as 132 kHz generate a great number of
small cavities with good penetrating capability. The
selection of the correct frequency varies with each cleaning
application.
Crest engineers have eliminated the difficulties traditionally
associated with the selection of proper frequency ranges for
ultrasonic cleaning through the patented “
Simultaneous
Multi-frequency
” design and uniform energy distribution.
Chemical
Characteristic
Many cleaning solutions are available for use with the Crest
ultrasonic cleaning console. In selecting the proper cleaning
solution for your application, you will take many variables
into consideration, including the composition and
construction of the components to be cleaned and the nature
of the particular contaminant(s). It is important that you
read carefully the literature provided by the chemical
manufacturer.
Line operators should be aware of the importance of
achieving and maintaining proper temperature for a
particular cleaning water, as improper temperatures may
have adverse effects on the cleaning process.
Crest Ultrasonics recommends that all selection and use of
cleaning chemicals be closely coordinated by a designated
Process Supervisor who is trained and knowledgeable in the
chemical and operational aspects of ultrasonic cleaning.
