Wear of a rough disc in dry sliding contact with a smooth ball: experiment and modeling

Abstract

The main objective of this work is to model wear of a disc which was subjected to dry contact with a ball in unidirectional sliding. Tribological tests of sliding pairs were carried out using a tribological tester T-11 in a ball-on disc configuration. Stationary balls made of 100Cr6 steel with a hardness of 62 ± 2 HRC co-acted with rotating discs with 42CrMo4 steel with a hardness of 40 ± 2HRC. Discs were machined by lapping, grinding, milling, and vapour blasting. The values of the Sq parameter of disc surfaces were between 0.1 and 5.86 µm. Wear volumes of the discs were lower for bigger roughness heights. The simulation of disc wear was conducted on the basis of the repetitive contact between sliding surfaces. Strong correlation was achieved between the modeled and measured volumetric wear levels.

Application of Taguchi Technique to Study Tribological Properties of Roller-Burnished 36CrNiMo4 Steel

“…The most important parameter influencing the changes in the value of the friction coefficient was load. At the beginning of the tests, the coefficient of friction increased rapidly and obtained a steady-state value after the sliding distance of 20-50 m. The reasons for higher COF in the running-in period may be the low value of surface roughness [37] and the fact that the static friction is higher than the dynamic friction [38]. With a low value of surface roughness, the sample and counter-sample are quickly matched in the ball-on-disc contact.…”

Electrical discharge micro-texturing using compound tool electrodes for tribological and wettability applications

“…The tribological performance (friction and wear) of micro-textured surfaces was analysed through a unidirectional ball-on-disc tribometer (NANOVEA T3 400) against hardened steel ball counter body SS, AISI E52100, 6 mm diameter under dry conditions at a constant normal load of 10 N and rotational speed of the disc (100 RPM) for the test duration of 10 min. Similar to the wear tests of the textured surfaces in dry mode [21,22], lubricants can also be used during the ball-on-disc tests with varying loads, which would affect the tribological characterises of the textured surfaces [10]. However, this work demonstrates the capability of the EDM process for large-area surface texturing using compound tools and compares the tribological characteristics of the textured surfaces with the untextured surface under dry mode.…”

Wear Behavior and Wear Worn Surface Analysis on Hardox Steel

“…Wear rate was varied with different applied load and sliding distance [9]. Steel pin coated with chromium was considered as the pin material during wear test and correlation between the input variables and its effect were studied [10]. The effect of different reinforced particles was analyzed during wear test on aluminium composite.…”