Production Machining

JUL 2013

Production Machining - Your access to the precision machining industrial buyer.

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which can be achieved by oscillating or rotating the parts in the bath. Many ultrasound generators are also equipped with a "sweep" function, for frequency modulation, to distribute the ultrasound vibrations evenly in the cleaning fuid. Also, an increasing number of ultrasound systems for cleaning components with complex geometries are now equipped for multi-sided irradiation, from both the foor and the side walls. Good Access Apart from air, other barriers can also inhibit the unrestricted access of the sound waves to the item to be cleaned and prevent an optimal result. Tese barriers include cleaning containers that are totally enclosed or made of perforated sheet. Te ideal workpiece holders and parts baskets are made of round wire, allowing good access on all sides, both for the ultrasound and the cleaning medium. When loading the workpiece holder or parts basket, the surfaces to be irradiated should not be greater than the sound-emitting areas, and the mass of the part or parts should not exceed 50 percent of the bath's volume. Loading parts too compactly (such as many items piled close on top of each other) can prevent the ultrasound from reaching all the surfaces that are to be cleaned, resulting in inadequate cleaning quality and long treatment times. Te correct use of ultrasound, combined with a cleaning agent suited to the contaminants, can shorten the cleaning time by as much as 90 percent, while reducing the consumption of cleaning chemicals. CONTRIBUTOR Doris Schulz has worked as a freelance journalist for more than 15 years. Her specialty is the feld of surface treatment, especially parts cleaning. Contact :: Meeting Medical Manufacturing's Tough Demands When properly applied, ultrasonic cleaning technology is well suited for medical's critical cleaning needs. LINK :: Clean Parts. ■ ■ ■ ■ Clean Lines Passivation Lines Aqueous Chemistries Data Management ® Tel. 716.763.4343 ■ 48 PRODUCTION MACHINING :: JULY 2013

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