PLANT MANAGEMENT
cleaned, activated and coated with an adhesion-promoting agent. Where the surface is to be textured as
The EcoClean NASS plasma system minimises contamination
whereupon the process gas (usually filtered ambient air or oxygen) is introduced and the plasma is ignited. Due to excitation by the process gas, a plasma of high-energy ions and free electrons – plus other reactive particles – is thereby formed in the vacuum. Contaminants on the part surface, such as grease or oil residue, are chemically attacked and transformed into volatile compounds. At the same time, the plasma’s UV radiation likewise exercises a cleaning effect, for instance, by breaking down long-chain hydrocarbons. Te gaseous decomposition products of the plasma treatment are extracted from the work chamber by suction. Tanks to the combination wet- process and plasma cleaning operation, the free surface energy that is key to achieving an optimum adhesion strength can be raised to 50 to 80 mN/m in one single process step.
INTEGRATION OF DIFFERENT PRE-TREATMENT METHODS Te partial or full-surface cleaning and activation – and, in part, coating – of individual metal or plastic products is central in the expansion of Ecoclean’s process portfolio. For these diverse objectives, compact application systems were developed for integration into a host of requirement-focused equipment concepts.
Each system can be fitted with different
treatment technologies such as atmospheric pressure plasma, EcoCsteam, laser, CO2
EcoCbooster provides a pre-treatment method
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snow blasting or EcoCbooster processes, whether configured as an automated standalone unit or integrated into a production line. Te company’s aim is to solve each of
the various surface treatment requirements with the most technically and economically beneficial technology. Tus, the use of the new Disc-Jet atmospheric pressure plasma source developed by the Fraunhofer Institute for Surface Engineering and Tin Films (IST) permits laminar and contoured as well as depth processing. Due to the so-called “cold” surface discharge (30 to 60°C), even temperature-sensitive substrates can be treated in this manner. An atmospheric pressure plasma, for instance, allows part surfaces to be selectively fine-
well as cleaned, laser treatment is the method of choice, depending on the given material. EcoCbooster technology provides a pre-treatment method for the selective, effective and efficient activation of surfaces prior to, thermal spraying. Te automation system, too, is perfectly adapted to the specific requirements and application situation. Tus, robot-based solutions can be realised just as readily as multi- articulated handling systems and CNC linear drive units. Across all variants, either the workpiece, the tool or both can be moved to match the given task definition. Tanks to this high flexibility, the new surface treatment toolkit is the perfect solution for diverse applications in electromobility, medical equipment technology and numerous other fields of industry.
Low-pressure plasma cleaning offers unsurpassed cleanliness
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