並列摘要
A Falex machine was used to perform the pin-on-disk wear tests. Two kinds of steel which included medium carbon steel and die steel were used. The experiment was to understand the wear mechanism at higher sliding speed, and to observe the mechanism of wear. Besides, The disks of different hardness were used to study the influence of hardness of disk on wear mechanism. According to the experimental results, the hardness of materials were decreased under the influence of frictional heat. In addition, the pin would be continuously extruded from the contact interface. The phenomenon of extrusion became more remarkable with increasing normal load and sliding speed, the wear rate increased correspondingly. When a pin slid against a soft disk, the wear rate was low at lower load and lower sliding speed. Owing to a lower contact temperature, the formation of oxides became difficult, which resulted in severe wear.
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