hard turning, in-feed grinding, 3D surface roughness, tribology


In machining automotive industrial parts by hard machining procedures, the topographic characteristics of high accuracy surfaces have high importance. In this paper 2D and 3D surface roughness features of gear bores machined by hard turning and grinding are demonstrated. The 3D roughness parameters, which are considered as more exact than the 2D parameters, were compared to the 2D ones, which are used more widely in industrial practice. The analyzed machining procedure versions were ranked based on the topographic parameters determining the tribological (wear and oil-retention capability) characteristics of the different surfaces.

Author Biography

Viktor Molnár, University of Miskolc

University of Miskolc, Faculty of Economics, Hantos Elemér Doctoral School of Business, Management and Regional Sciences


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Mechanical processing of materials, the theory of cutting materials, mathematical and computer simulation of machining p