Integrated Cleaner Introduction
A40-039 Rev 1 Page 7
1.5 How Ultrasonics Works
Ultrasonic sound is sound transmitted at frequencies generally beyond the range of human hearing.
In your ultrasonic cleaner, ultrasonic sound (sonics) is used for cleaning materials and parts. 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.
During the high pressure stage, the bubbles collapse, or “implode”, releasing
enormous amounts of energy. These implosions act like an army of tiny scrub
brushes. They work in all directions, attacking every surface and invading all
recesses and openings.
1.6 Ultrasonic Frequency Selection
The ultrasonic frequency was selected when the cleaner was purchased. 25 khz units are most
effective when cleaning heavier parts with gross contamination. 40 khz units are better for
precision cleaning of more delicate parts. Most applications can be cleaned at either frequency.
1.7 Ultrasonic Damage to Parts
Ultrasonic cleaners apply high intensity sound to parts and can damage very fine wires or thin
films. Test susceptible parts for damage before cleaning production quantities.
Some semi-precious stones such as pearls, opals and some crystalline materials may be damaged
by ultrasonics and should not be ultrasonically cleaned.
