Wear Resistance of Tool Steels During Dry Sliding Friction

Tribotechnical investigations of steels of the grades 5ХНМ, 11Х4В2МФ3С2 and 95Х6М3Ф3СТ were conducted under conditions of dry sliding friction in pairs with cylindrical indenters fabricated from hard alloy ТТ10К8Б at a load of 40 MPa. The test scheme is based on the reciprocating movement of a steel sample relative to a carbide counterbody at a speed of 0.1 m/s. The test time for each of the samples was 10 hours. The amount linear wear of the friction pair elements was used as a criterion of resistance during sliding friction. Minimal wear under conditions of dry sliding friction paired with a ТТ10К8Б hard alloy indenter was recorded when testing samples of 11Х4В2МФ3С2 high carbon tool steel after quenching at 1060 °C and triple tempering at 525 °C. The amount of total linear wear in the friction pair “steel 11Х4В2МФ3С2 — hard alloy ТТ10К8Б” is 4 times less than that of the pair “steel 5ХНМ — hard alloy ТТ10К8Б”.

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