One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore while designing the production process, the technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part.The article presents the research results referring to the analysis of the influence of cutting parameters on surface roughness parameter of marine pump shaft. The turning process was carried out on a universal CDS6250BX-1000 centre lathe. The research was performed on a shaft made of X5CrNi18-10 (AISI 304L) stainless steel. During lathing process used DKM 2010 turning dynamometer. The finishing turning process was carried out by cutting tool with CCET09T302R-MF removable insert by DIJET. During turning the following machining parameters were used: cutting speed Vc = 226 m·min-1, feed f = 0.044; 0.062; 0.083; 0.106 mm·rev-1 and cutting depth ap = 0.25; 0.5; 0.75; 1.0 mm. The goal of the paper was to define the influence of treatment conditions on surface roughness parameter. The surface roughness parameter was measured by T8000 profilometer and the chemical composition of steel was measured by Solaris-ccd plus optical spectrometer.Keywords: Finishing turning, surface roughness parameter, stainless steel, marine pump shaft
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