TPi October 2009

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October 2009 Tube Products International 25
GUYSON International’s range of industrial quality Kerry
ultrasonic tanks provides speedy cleaning for welded metal
joints on a variety of materials, including aluminium and
copper. This is particularly important where the raw metal
material is being used without paint or other coating to mask
any discolouration on the components.
Weld discolouration on soft metal components has previously
been difficult to remove at speed. Too aggressive mechanical
cleaning could leave scratches in soft surfaces. Acids often
had to be tailored to each specific material, so multiple baths
were needed, and now many of these methods are becoming
outmoded under increasingly stringent health and safety
legislations. Time-consuming manual labour was often the
only effective solution.
Ultrasonic cleaning is brought about by the introduction of
high-frequency sound waves (usually between 20-80kHz) into
a liquid by transducers attached to the bottom of the tank.
The resulting action is called cavitation. Cavitation is created
by high and low pressure areas produced in the solution
as the sound waves pass through it. In low-pressure areas,
microscopic ‘bubbles’ form. The pressure rises rapidly as
the next sound wave passes through the solution, violently
imploding the millions of tiny bubbles and creating a highly
effective ‘scrubbing’ action on any immersed component
surface. At the standard 38kHz, this happens 38,000 times
per second.
Pulsatron KS and UCR tanks allow the user to pre-set exact
cleaning times and temperatures, ensuring consistent levels
of cleanliness from batch to batch and providing an affordable
way to improve cleaning quality. All functions are controlled
by a simple four-button membrane keypad. An LCD panel
displays the temperature and time set by the user, the time
elapsed since the start of the cleaning process.
Each unit works within operating temperatures from 20 to
80ºC, which can be set in 1º increments, allowing the optimum
temperature to be selected for a particular combination of
component material, cleaning solution and contaminant.
Sonics time may be set in the range 0.1 to 99.9
minutes in 0.1 minute increments.
KS ultrasonic tanks and UCR ultrasonic
clean and rinse systems are available
in a range of sizes: standard KS tanks up to 248
litre capacity, and UCRs
up to 117 litres.
Guyson offers a
free component
trial service with
no obligation
to buy.
Guyson
International Ltd – UK
Ultrasonic clean rinse tanks
remove weld discolouration