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4655 |
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Tuesday, May 10, 2016, Room 3E 11:30 AM Process Diagnostics, Sensors & Controls |
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Gas and particle investigations during wire arc spraying process |
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Michal Szulc / Zierhut Messtechnik GmbH, Deutschland Alexander Atzberger* / University of Federal Armed Forces Munich IPM (LPT), Germany Stefan Kirner/ University of Federal Armed Forces Munich IPM (LPT), Germany Karsten Hartz-Behrend/ University of Federal Armed Forces Munich IPM (LPT), Germany Stephan Zimmermann/ University of Federal Armed Forces Munich IPM (LPT), Germany Jochen Schein/ University of Federal Armed Forces Munich IPM (LPT), Germany Jochen Zierhut/ Zierhut Messtechnik GmbH, Germany Werner Mayr/ University of Applied Sciences Munich, Germany Werner Krömmer/ Linde AG, Deutschland |
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Newly-developed wire arc spray technologies have improved the process stability and coating properties significantly. The gas injection, gas composition and flow rate to the arc within a special wire arc spray process plays a crucial role in separating the molten particles from the wire ends. Because of this fact, investigations with different gas compositions were made to characterize the dependencies between the gas flow, the gas velocities and resulting particle behavior, which is influenced by the coating parameters. In order to investigate these topics a BFS research group was founded. The paper is organized as follows: In the first section an explanation of wire arc system and adjusted parameters is presented. In the second part the diagnostics are introduced. Thereby the general setup and functionality of the used gas and particle investigation systems are shown. The third part discusses the results in more detail. An initial correlation of coating results with the individual detected particle parameters and measured gas parameters is evaluated for a first interpretation. The last part describes an outlook to future work and concludes the paper. |