Influence of machining by finishing milling on surface characteristics

The aim of this study is to analyse the evolution of residual stresses; mic rostructure, microhardness and roughness in relation to the different param eters of milling. For finishing milling, parameters are cutting speed and f eed. The hole drilling strain gage technique was used to determine the resi dual stresses. These are measured from the surface to the bottom of the tre ated workpiece. Two different materials were used in this study: a carbon s teel (CS) and a duplex stainless steel (DSS). The latter belongs to a high strength stainless steel family with high corrosion resistance properties. In this study, we have used the experimental system method to analyse the e volution of different surface characteristics in connection with cutting ph enomena which are cutting forces, chip geometry and cutting temperature. We have noted that a high value of cutting speed used with a small value of f eed improves the quality of the machined surface. (C) 2001 Elsevier Science Ltd, All rights reserved.