The Machinability of Nickel-based Alloys in High-pressure Jet Assisted (hpja) Turning

D. Kramar, J. Kopač, Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia M. Sekulić, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia Z. Jurković, Faculty of Engineering, University of Rijeka, Rijeka, Croatia Due to their mechanical, thermal and chemical properties, nickel-based alloys are generally included among materials that are hard to machine. An experimental study has been performed to investigate the capabilities of conventional and high-pressure jet assisted (HPJA) turning of hard-to-machine materials, namely Inconel 718. The capabilities of diff erent hard turning procedures are compared by means of chip breakability. The obtained results show that HPJA method off ers a signifi cant increase in chip breakability, under the same cutting conditions (cutting speed, feed rate, depth of cut).