Abstract
In this work, a study of the influence of the cutting parameters on superficial quality of dry-turned UNS A97075 test bars has been carried out. The superficial quality has been evaluated trough the arithmetical average roughness,Ra. In addition, the evolution ofRaas a function of the axial machining length has been analyzed. In order to do this, a set of machining tests has been performed under different combinations of cutting speed and feed. The experimental data have revealed a high sensitivity to change ofRawith feed, whereas this sensitivity is lower with cutting speed. On the other hand, a tendency to decreaseRawith the axial machining length has been found. Finally, an experimental prediction model forRahas been developed. This model allows predicting the value ofRaas a function of the cutting parameters and the machining time.
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