Effect of Ball Valve Component Materials on Wear

Abstract

Features of the wear of mating parts of ball valves made of heat-resistant cast alloy ZhS-6U and cermet based on uncoated titanium carbide TiC–ZhS6U and with wear-resistant TiN and Zr–Ti–N–C coatings are studied. It is established that wear-resistant coatings based on cermets prevent the emergence of hard TiC inclusions at the friction surface thereby reducing friction pair component abrasive and mechanical wear and decreasing the overall degree of ball valve wear.