CAVITATION EROSION OF GREY CAST IRON WITH PEARLITE MICROSTRUCTURE

1 RIEMSCHNEIDER Eduard
Co-authors:
1 BORDEAȘU Ilare 1 MITELEA Ion 1 UȚU Ion Dragoș
Institution:
1 University Politehnica of Timisoara, Faculty of Mechanical Engineering, Timisoara, Romania, EU
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
985-990
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
18 views / 6 downloads
Abstract

The most negative effect of cavitation is the destruction of the solid surface by micro-jets impact or shock waves generated by implosion or explosion of cavitation bubbles. It is present in all hydro-mechanical equipment where the pressures fluctuate which lead to the appearance and development of these bubbles, as a result of the flow section changing.The paper analyses the behaviour and resistance to vibrating cavitation of grey cast iron with pearlite microstructure, used for manufacturing of components and shutters valves with metal-metal sealing. The experiment is performed on a standard vibrator device, and the evaluation is made based on microstructural images of eroded surfaces and by comparing the curves and specific parameters with those of quality carbon steel C45, which has in annealed state mechanical properties close of this grey cast iron.

Keywords: Grey cast iron, ultrasound cavitation, microstructure
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