Tool Wear Influence on The Fatigue Life of Lathe Processed Specimens of 1.6310 Steel

Machining processes result in numerous influencing factors on the fatigue behavior of manufactured specimens or components. In addition to various process parameters, such as feed rate, cutting speed and cutting depth, the wear condition of the cutting tools is a particularly important influencing factor. In the present work, the relationship between the wear condition of turning tools, represented by flank wear and cutting edge rounding, and the surface roughness of machined specimens is presented and their influence on fatigue behavior is investigated. Experiments were carried out on the ferritic-bainitic steel 1.6310 (20MnMoNi5-5), which is mainly used in spray lines in German nuclear power plants. The aim of the presented research is to attribute the scattering of fatigue life to the respective tool wear at given stress amplitudes.