EROSION OF METALS BY PULSATING WATER JET

The aim of the paper was to determine erosion effects of pulsating water jet impinging the surface of metal sample. The influence of repeated impacts of water pulses and impact velocity (operating pressure) on the erosion of metal surface was investigated. The development of erosion pattern with respect to number of impacts was analysed and discussed. It was found that erosion caused by repeated impacts of water pulses occurs in three stages. The stage of erosion of the surface can be determined by the behaviour of surface characteristics (such as and ) with respect to number of impacts of pulsating water jet. Ra Rz erosion effects, pulsating water jet, repeated impact, surface characteristics