Distribution of profile and area roughness parameters by the location of the analyzed area on the milled surfaces of titanium alloy workpieces

Abstract

Surface roughness affects the performance and service life of parts. Understanding the differences between the profile and area methods of determining surface roughness allows obtaining more data for analyzing the texture of machined surfaces. This article is devoted to the consideration of different approaches to the assessment of surface microgeometry, namely the profile and area methods. The work determined the parameters of surface roughness after dry face milling of titanium alloy with variable cutting conditions, taking into account the position of each of the 25 analyzed areas on the machined surface. As a result of the study, roughness maps of milled surfaces were developed, and the scatter of values of such roughness parameters as Ra and Sa for the profile and area methods were determined and compared, respectively. The cutting modes that ensure the minimum range of roughness parameters over the entire area of the machined surface are determined. Particular attention is paid to the prospects of applying the areal method of roughness measurement. The necessity of further scientific research in the direction of assessing the texture of machined surfaces to develop recommendations for the choice of technological conditions to ensure the required roughness and uniformity of the microrelief of such surfaces is substantiated.

Keywords

• face milling
• profilogram
• roughness map
• surface texture
• cutting modes