Abstract
Studies were made on sliding wear of a deposited metal, in particular, a metal comprising low carbon steel, and the relation between the wear and welding conditions was determined.
As the results of observation, it was shown that the wear resistance of the sliding surface was higher in heat-affected zone than in finish welding zone. The effects of bead and sliding direction on the wear seemed to be weakened when they ran in parallel each other. These phenomena were most prominently observed in the sliding surface of finish welding zone.
The effect of number of deposited metal lyers on the sliding wear was studied during experiments. It war found that the amound of wear loss slightly increased with the increase of the number of layers, because the materials of metal layers used in the experiments did not cause dilution phenomena of alloying elements in welding.
In reference to the wear characteristic curve obtained throughout the experiments, wear mechanism was discussed particularly in the areas where the increase of wear loss was distinctly different from that in other areas. Oxidation of the metal was observed in the area of mild wear. However, in the area of maximum wear loss, the occurrence of the loss was mainly due to scratches or scourings produced by adhesion. Moreover, in the area where the wear loss decreased under severer conditions, there was observed metal transfer by strong adhesion.
