Effect of Cutting Parameters on Tool Wear, Tool Life and Cutting Temperature During Dry Turning of Dss2205

Abstract

It has been demonstrated that duplex stainless steels (DSS), which include an equal amount of ferrite and austenite, are better than single-phase steels such austenitic stainless steels (ASS). Improved features are linked to higher DSS performance, however these same qualities also make DSS more difficult to machine. Moreover, machining becomes more challenging due to the formation of Builtup Layers. In this work, 2205 Duplex Stainless Steel (DSS2205) was CNC dry turned, and the impact of machining parameters on tool wear, tool life, and cutting temperature was assessed. By changing the feed rate and cutting speed, experiments were carried out. For the DSS2205 machine in dry conditions, cutting settings were chosen to include a depth of cut of 0.7 mm, a cutting speed of 140 m/min, 180 m/min, and 220 m/min, and a feed rate of 0.14 mm/rev, 0.18 mm/rev, and 0.22 mm/rev. Dry turning was performed using an uncoated cemented carbide tool, a TiAlSiN-coated tool produced by the High Power Impulse Magnetron Sputtering (HiPIMS) coating technique, and a TiSiN-coated tool produced by the Scalable Pulse Power Plasma (S3p) coating technique. As a means of comparison, tool wear, tool life, and cutting temperature were measured. The tool life obtained with TiSiN (S3p) and TiAlSiN (HiPIMS) tools was four and three times higher, respectively than that of uncoated tools. The higher cutting temperatures that the coated tools demonstrated had no bearing on the machining performance because PVD coatings held up even at higher machining temperatures.