Production Machining

SEP 2018

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

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Page 52 of 75

CLEANING TECH BRIEF :: 51 is important not to lose sight of the critical issues that are in the process of shaping the future. Industry 4.0 is an absolute commercial necessity, not just a nice-to-have (perk)." Parts cleaning and pretreatment was one of many topics covered at that show, and one presentation held at the Surface Technology Forum raised my interest: carbon dioxide (CO 2 ) snow cleaning technology. Dry cleaning technology such as CO 2 snow jet, plasma and laser beam cleaning increasingly find their way into the parts cleaning industry, as they allow for cleaning functional surfaces selectively—for example, before welding or assembly— offering savings potential, especially when combined with automation solutions. Hans-Jörg Wössner from ACP GmbH in Ditzingen, Germany, discussed his company's dry-cleaning technology using a jet of CO 2 snow. e inline process can remove particulate and filmy contamination (dust, ablation residues, flitter, flux residues, smoke residues from laser processes, oils, fingerprints, cutting emulsions, polishing paste and so on) from almost any material in a gentle, but effective manner, he says. "e process can be used not only to clean large surface areas, but also to selec- tively remove contamination from tiny defined functional areas with the highest cleanliness requirements." ACP's snow cleaning system relies on the expansion of liquid carbon dioxide. e output stream is usually a high-velocity solid and gas mix and focused at the surface for cleaning. e CO 2 only transforms from a liquid to a solid state in the form of fine snow crystals as it leaves the nozzle. e crystals are then bundled by a circular jacketed jet of compressed air and advanced to the process zone at supersonic speed. Cleaning is accomplished by a combi- nation of momentum transfer and solvent action of the dry ice with surface contamination. e residue-free and nondestructive cleaning method removes particles in sizes ranging from visible to 3 to 5 nanometers; organic contamination removal matches that of commercial solvents such as cyclohexane (C 6 H 12 ). With around 8,000 square meters of display space, the Surface Technology trade fair was about 15 percent larger this year than in 2016 and attracted about 6,000 visitors. By far, the largest national exhibitor contingent came from Italy, followed by exhibitors from Switzerland, China and the United Kingdom. Topics included energy efficiency and the efficient use of materials; lightweight construction and surface technology; new electroplating processes; physical surface treatment processes; typical applications for treated surfaces; Industry 4.0 in surface treatment; new or upgraded plant, equipment and processes; quality assurance and process optimization; as well as cleaning and pretreatment. IMTS Chicago September 10 th to 15 th , 2018 East Building Level 2 Stand 121138 Industrial Cleaning Technology Ecoclean offers a comprehensive range of cleaning equipment systems for virtually all types of cleaning tasks for the efficient removal of oil, chips, grease, emulsions and swarf. From coarse to intermediate to ultrafine cleaning, our systems not only provide improved cleaning quality and higher process reliability, but also guarantee cost and resource savings in your production. A Clean Business

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