TPi October 2009

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. Ultrasonic clean rinse tanks remove weld discolouration

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

info@guyson.co.uk www.guyson.co.uk

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October 2009 Tube Products International