PT Journal
AU Linek, T
   Tanski, T
   Borek, W
TI Influence of Surface Roughness on the Cavitation Wear of P265GH and X2CrNi18-9 Steel Cavitation Generators
SO Communications - Scientific Letters of the University of Zilina
PY 2018
BP 48
EP 54
VL 20
IS 3
DI 10.26552/com.C.2018.3.48-54
WP https://komunikacie.uniza.sk/artkey/csl-201803-0009.php
DE cavitation; cavitation wear; cavitation generators; surface roughness; mass loss; P265GH steel; X2CrNi18-9 (304L) steel
SN 13354205
AB The aim of this paper was to determine the effect of surface roughness of cavitation generators made from two different materials: P265GH steel, with a ferritic-pearlitic structure, and X2CrNi18-9 (304L) steel with an austenitic structure on the mass loss and cavitation wear. Cavitation generators were tested in the conditions of cavitation wear environment continuously for 500 PMHs in a specially designed and constructed author's stream and flow device. Based on the carried out experiments was confirmed that the highest mass loss - 0.1752 g is seen for a sample of P265GH steel wet sanded with paper with the grain size of 1000. The smallest mass loss was recorded for the cavitation generator made of X2CrNi18-9 (304L) steel, sanded with sandpaper with the grain size of 2500. Certainly, the smallest number of cavitation wear effects was found for a cavitation generator made of austenitic steel X2CrNi18-9 (304L). Few places were identified based on macroscopic photographs, especially near the edges of the straight-through openings, but their number was much smaller than for the ferritic-pearlitic steel, which is associated most of all with the properties of austenitic chromium - nickel steel.
ER