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This work was financed from the funds of the Ministry of Education and Science by Agreement
No. DNK/SP/513880/2021 of 22 December 2021, the project “14th School of Machining and the 43rd
Scientific School of Abrasive Machining”, under the programme “Perfect Science”.
This paper analyses the influence of face milling process parameters on the surface properties of car-
bon fibre reinforced polymer. The influence of milling speed and feed per tooth on the surface proper-
ties was determined. The influence of cutting speed and feed per tooth on surface energy properties
was determined. The object of research was a carbon fiber reinforced plastics (CFRP) composites plate
made of carbon fibre in epoxy matrix. The tool used in the study was a double-edged end mill. The ma-
chining parameters used were variable: cutting speeds of 100 m·min-1, 120 m·min-1, 140 m·min-1 and
160 m·min-1, and feeds per tooth of 0.015 mm/tooth, 0.020 mm/tooth, 0.025 mm/tooth and 0.03 mm/tooth. The
axial depth of cut and radial depth of cut was a constant parameter. After milling, tests were carried out on the sur-
face contact angle, which was used to determine the surface free energy. Based on the contact angle measurements
carried out with the sitting-drop method and the calculation of the surface free energy with the Owens-Wendt
model, it was observed, that the increase in the value of the surface free energy is significantly influenced by the
increase in the cutting speed.
