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1296 |
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Tuesday, June 03, 2008, Auditorium 2 4:55 PM Junior Session This session will deal with different topics, most promising young talents, both from industry and universities will report shortly about their work. This session is accompanied by a special poster exposition. All visitors of this session are allowed to elect their favorite contribution, the winner will be anounced on the awards banquet |
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Influencing parameters on the turning process of Fe-based thermal sprayed coatings |
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Georg Fischer / Technische Universität Berlin
Fakultät V Verkehrs- und Maschinensysteme Institut für Werkzeugmaschinen und Fabrikbetrieb
Fachgebiet Füge- und Beschichtungstechnik, Germany Johannes Wilden / Technische Universität Ilmenau / Fachgebiet Fertigungstechnik, Germany Simon Jahn/ Technische Universität Ilmenau / Fachgebiet Fertigungstechnik, Germany Shulin Wang/ Technische Universität Ilmenau / Fachgebiet Fertigungstechnik, Germany Victor Drescher*/ TU Ilmenau, Germany |
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The Thermal Spray processes are widely used to fabricate corrosion and wear resistant coatings respectively. However, these coatings have to be finished generally in subsequent steps, for example by turning, milling or grinding, to fit the desired purposes, e.g. surface roughness and accuracy. Up to now grinding is the most common post processing for wire arc sprayed coatings, but in recent years the hard turning technology gained high interest for coating treatment due to high machining efficiency. The aim of the present work is a deep understanding of machinability of different thermal sprayed coatings. For this reason microstructure analysis (SEM and hardness) before and after machining process had been carried out. Within the investigations a significant increase of hardness due to the hard turning process at Fe-Mn coatings had been verified. This effect, the force induced martensitic transformation, could improve the mechanical properties of the coating considerably. Based on the investigations presented in this paper, a deep insight into post processing for thermal sprayed coatings is given. |