roundness, 3D surface topography, hard turning, precision machining


Accuracy and topography are significant indicators of precision machined high-quality surfaces. Case hardened steel (16MnCr5) was analyzed to obtain information about the effects of technological data and the connections between the analyzed accuracy (roundness) and roughness parameters (Sa, Sz, Ssk, Sku). It was found that the feed rate has a significant influence on the roundness and the roughness parameters, and there are strong relationships between the roundness and these roughness parameter values: the correlation coefficients varied between 0.78 and 0.85.

Author Biographies

Sultana Jakiya, University of Miskolc, Hungary

PhD student, Faculty of Mechanical Engineering and Informatics, Institute of Manufacturing Science, University of Miskolc, Hungary

Sztankovics István, University of Miskolc, Hungary

Associate Professor, Deputy Director of the Institute of Manufacturing Science, University of Miskolc, Department of Production Engineering, Miskolc - Egyetemváros, Hungary


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