Evaluation of Wear Mechanisms of Graphites Used for Crystallisers for Continuous Casting
| Autor: | A. Brudny, J. Kulasa, B. Juszczyk, J. Myalski, S. Roskosz, R. Wycisk, P. Kwaśniewski, P. Strzępek, M. Poręba |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Archives of Foundry Engineering, Vol vol. 22, Iss No 4, Pp 109-115 (2022) |
| Druh dokumentu: | article |
| ISSN: | 2299-2944 29868459 |
| DOI: | 10.24425/afe.2022.143958 |
| Popis: | This paper presents the results of research concerning the evaluation of tribological properties of graphite materials used, among others, for crystallisers for continuous casting of non-ferrous metals and their alloys. Graphite materials differing not only in their physical properties but also in the technology of their production were selected from a wide range of commercially available products. Wear resistance investigations of the tested graphite materials were carried out on a pin-on-disc tribometer under technically dry friction conditions on a sliding distance of 1000 m. A constant load but variable speed was used in the tests. The mean value of the coefficient of friction and the wear of the material were determined based on the tribological tests carried out. It was observed that as the speed increases, the average value of the coefficient of friction decreases, while the wear increases. A microstructural analysis of the wear track showed that the friction mechanism depends mainly on the graphite formation technology, which is related to the microstructure of the tested materials, and to a lesser extent to their physical and mechanical properties. Varying the speed values made it possible to trace changes in the wear mechanism, on the basis of which it is possible to predict the durability and reliability of graphite crystalliser operation. |
| Databáze: | Directory of Open Access Journals |
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