Assessment of Effects of Surface Roughness and （对表面粗糙度的影响,）.pdf

Technical Paper Assessment of Effects of Surface Roughness and Oil Viscosity on Friction Coefficient under Lubricated Rolling-sliding Conditions (Analysis of Lubrication Modes Based on EHL Theory) Leimei Lin Recent years have seen remarkable advances in the surface reforming technology for reducing the friction coefficient of sliding parts and enhancing their durability. In addition to conventional macro-level surface reforming approaches such as developing sliding materials and enhancing surface strength by heat treatment, surface reforming techniques focused on lubricity have come to be adopted. These techniques include the development of sliding materials and coating materials focused on surface characteristics at the micro level and the use of surface texturing technology. In conventional research and development efforts, combinations of sliding materials and use conditions (test conditions) were used as parameters for relative assessment of strength and durability. However, this approach involves many assessment parameters if surface characteristics and lubricant properties are included, posing a problem of too many assessment standards and parameters. To address this problem, the author conducted analysis of sliding characteristics using theoretical calculation based on tribology (EHL theory) with a view to unifying various assessment parameters. In addition to using surface roughness and oil viscosity parameters which are the basis of lubricity assessment, heat g