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techdirections March 2017 : Page 25

How Ultrasonic works for Students Ultrasonic cleaning is a preci-sion parts cleaning technology that uses high frequency sound waves to remove dirt and contaminants. Micron-sized bubbles are formed from the alternating pressure waves generated from the high-energy transducers. Energy is transferred to, and stored within, these bubbles. As cylinder heads, It has the power to clean a wide range of parts and com-ponents—even rubber and plastic parts. With a digital control system, stu-dents can control the type of clean-ing required for different cycles of different loads. But they find that the standard 3-minute cycle works great on just about anything that needs cleaning. They simply load the Display of dirty and cleaned parts, original condition—as removed from engine and three minutes in ultrasonic—no hand scrubbing the bubbles contact the parts to be cleaned, they implode, releasing the stored energy and creating a micro jet with scrubbing action which dislodges contaminants from the parts. Dirt, oils, and other dislodged contaminants then settle to the bot-tom of the tank. The process of formation and collapse/implosion of these tiny bubbles is called cavitation and is common to all ultrasonic cleaners. What is unique about the UltraSonic LLC technology is the placement of the transducers on the side of the tank rather than the bottom. Un-like bottom-mounted transducers, side-mounted transducers provide a consistent cleaning action from top to bottom, with no “blind spots.” A v-shaped bottom also allows the dirt to collect on the bottom without interfering in the transducer’s wave path, and allows for easy cleaning. The 3200FA combines both of these unique design features with a large 55-gallon main tank capacity and a 10-gallon weir tank. Roland and his students find the cleaner perfect for the larger parts and components like engine blocks and machine, press the “Green Button”, and let the machine run. When the cycle is complete, they remove the clean parts. In addition to achieving a much cleaner part than could be accomplished with hand scrubbing, classes are also saving time. “Cleaning engine parts is a te-dious, time-consuming task. With this ultrasonic process, the students understand what “assembly ready” cleaning means. We spend less time on cleaning and more time with hands-on learning.” added Roland. Although the amount of time saved varies per component cleaned, Roland estimates that they save 4-5 hours or more per engine. He stress-es that the hand scrubbing still falls far short of the ultrasonic results. “When you hand scrub them, you can’t get into the nooks and crannies of the parts. You just can’t get them as clean as they come out of the ultrasonic.” In addition to saving time former-ly spent hand scrubbing parts, the cleaner is saving time in other ways too. Roland uses Ultra1, a heavy carbon soap from UltraSonic LLC with an anti-corrosive characteristic to it. Now Roland and his students no longer have to treat the cleaned parts with oil, grease, or a rust pre-ventative. “When we clean a crankshaft or a set of connecting rods, we don’t have to take them out, dry them off, and then oil them up. They can come out of the tank and sit there for a couple days up to a couple weeks without getting rusty which was a real problem with some of the other processes.” In fact, the cleaner only requires one person to load it, start it, and unload it, freeing up students to per-form other tasks around the shop. With no dangerous chemicals or solvents, it’s a much safer alternative for cleaning parts off the line. Perhaps the best aspect of all from a student perspective is the elimination of the hand scrubbing that was required. Elimination of this mundane and repetitive task means that students are more engaged in the learning process, creating a more positive environment for students and teachers alike. New Edition! machinists’ ready reference Enhanced readability and expanded content! Durable book provides essen-tial procedures, charts, tables, and for-mulas used by machinists, toolmakers, mechanical engineers, and designers. Handy 4-1/4" × 6" book is spiral bound to lie flat when open. $39.95 School discounts available on phone orders. to order: www.techdirections. com/booksmach.html Fax: 734-975-2787 Call: 800-530-9673 x300 www.techdirections.com aUtomotive tecHnoLogy 25

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