5 Introduction
How Ultrasonics Works
Ultrasonic sound is sound transmitted at frequencies generally beyond
the range of human hearing. In your ultrasonic bath, ultrasonic sound
(sonics) can be used for cleaning materials and parts, and for dissolving,
homogenizing and degassing liquids. This is how it works:
• As the sound waves from the
transducer radiate through the
solution in the tank, they cause
alternating high and low pressures
in the solution.
• During the low pressure stage,
millions of microscopic bubbles
form and grow. This process is
called CAVITATION, meaning
“formation of cavities”.
• During the high pressure stage,
the bubbles collapse, or “implode”
releasing enormous amounts of
energy.
• For ultrasonic cleaning
applications, these implosions act
like an army of tiny scrub brushes.
They work in all directions,
attacking every surface and
invading all recesses and
openings.
• This same energy can be used for
other applications, such as liquid
dissolving, homogenizations, and
degassing.
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