from the conferences organized by TANGER Ltd. provisional website
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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