Parametric description of one-process surface texture

Description of areal (3D) surface topography using only one parameters does not completely characterize surface. The analysis of linear correlation between parameters is helpful in selection of parameters. In this work one hundred surface textures after five machining treatments (grinding, polishing, vapor blasting, milling and one-process honing) measured by white light interferometer were analyzed. Additionally, selected twenty one-process surfaces after various treatments were studied. On the basis of correlation and regression analyses, sets of parameters describing individual surface groups and generally one-process surfaces were determined. It was found that one-process surfaces can be characterized by parameters: Sq, Sal, Str, Sdq, Sq/Sa and Sp/Sz. The extended characterization contains also parameters: Ssk, Sku, and Spd. Machining process can be identified based on the following pairs of parameters: Sq/Sa and Sp/Sz, Sdq and Sal as well as Str and Spd. Sq/Sa and Sp/Sz ratios were found to better characterize ordinate distribution of one-process surface texture than Ssk and Sku.