Wear behavior of two different Cr based alloys for surfacing of steel parts

Abstract

In this paper is analyzed wear behavior of two different types of alloys/filler metals aimed for hard surfacing of working parts exposed to intensive abrasive wear and impact loads. The aim of the paper was to determine wear resistance of two different Cr based alloys and possibilities for extending working life of working parts. Base metal, which was surfaced, is steel from group of cheap steels, what have influence on decreasing the manufacturing costs of a new part or revitalization of a damaged one. Surfacing was done by the MMA welding method with use of preheating of the samples. Wear resistance was examined on tribometer by using block-on-disc contact, while the real working conditions were simulated, i.e. contact was realized without lubricating varying the contact speed and loads as input parameters.