Abstract:

This article presents an experimental study of the technological properties of surface texture for different ways of milling Armox 500T armour steel. The study was carried out to determine how different machining parameters and groove milling methods affect the quality of the resulting surfaces. Different milling strategies and different ways of introducing the milling cutter into the material were examined to ensure a longer life of the cutting tool and fewer cutting forces in the initial milling phase. The milling methods used in the study were classical groove milling, trochoidal milling, and helical groove milling. Surface quality was assessed using selected 3D surface roughness parameters, and the usefulness of the parameters to describe the texture of surfaces obtained by milling was evaluated. This research will lead to a comprehensive description of the surface texture of Armox 500T armour steel elements after the application of different methods of milling. When the most commonly used industrial surface roughness parameters (Sa, Sz), small differences in their values can be seen between different milling methods. Extending the parameters studied to include the material curve, surface skewness, and kurtosis showed differences between the measured surfaces. These differences made it possible to determine surfaces with good load bearing capacity, resistance to high stresses, and capability to withstand high mechanical loads. A negative skewness coefficient was obtained for the first and second milling methods, indicating significantly higher friction compared to the other methods for which positive surface skewness was obtained.