Abstract
Cylindrical surface grinding can create defined textural patterns on a component with high quantity. This paper presents an experimental investigation of the frictional behaviours of ground cylindrical microstructural surfaces under a well lubrication condition. It shows that the coefficient of friction (COF) of microstructural surface is influenced by different workload and rotation speed. The results reveal that conventional surface roughness parameters do not present the influence of surface microstructure on friction performance well. However, the paper presents an interesting discovery that the friction behaviour of microstructural surfaces created by grinding could be controlled by combining dressing and grinding conditions. Such a discovery provides a logic way to reduce surface friction for energy efficiency applications. A few functional relationships have been established to illustrate the influence of microstructural features on friction. It was found that the ground microstructural surface could improve friction performance up to 20% compared to the smoother surfaces without defined surface textural patterns.
Highlights
Friction behaviour is a part of surface functions, and it is critical for the energy consumption and the applicable life of machined component surfaces
The studies in various operating conditions of experiments have shown that the micro regularities could successfully improve the friction behaviour under different lubrication regimes compared to untextured surfaces [2,3,4,5,6,7,8,9]
The coefficient of friction (COF) is mainly determined by the factors such as the material of the contact surface, The COF
Summary
Friction behaviour is a part of surface functions, and it is critical for the energy consumption and the applicable life of machined component surfaces. Gachot et al [1] presented a critical view at the fundamental effects of surface textures in different lubrication regimes. The studies in various operating conditions of experiments have shown that the micro regularities (dimples, cavities, grooves) could successfully improve the friction behaviour under different lubrication regimes compared to untextured surfaces [2,3,4,5,6,7,8,9]. Pettersson and Jacobson [2] investigated the grooves and square textures in the various sizes on PVD (physical vapour deposition) surface under dry and boundary lubrication conditions. Hu et al [3] studied the tribological performance of laser-textured 2024 aluminium alloy samples in unidirectional sliding tests under boundary lubrication conditions. The optimum area density was found at 8.5%, which agrees well with other research investigation [4] under boundary lubrication conditions
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