Hybrid machining of Inconel 718

• Published in: International journal of machine tools & manufacture Vol. 43; no. 13; pp. 1391 - 1396
• Main Authors: Wang, Z.Y, Rajurkar, K.P, Fan, J, Lei, S, Shin, Y.C, Petrescu, G
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.10.2003; Elsevier
• Subjects: Applied sciences; Cryogenic turning; Cutting; Exact sciences and technology; Inconel 718; Machining. Machinability; Mechanical engineering. Machine design; Metals. Metallurgy; Plasma enhanced machining; Production techniques; Inconel 718; Plasma enhanced machining; Cryogenic turning; Incanel 718
• ISSN: 0890-6955; 1879-2170
• DOI: 10.1016/S0890-6955(03)00134-2

A new approach for machining of Inconel 718 is presented in this paper. It combines traditional turning with cryogenically enhanced machining and plasma enhanced machining. Cryogenically enhanced machining is used to reduce the temperatures in the cutting tool, and thus reduces temperature-dependent tool wear to prolong tool life, whereas plasma enhanced machining is used to increase the temperatures in the workpiece to soften it. By joining these two non-traditional techniques with opposite effects on the cutting tool and the workpiece, it has been found that the surface roughness was reduced by 250%; the cutting forces was decreased by approximately 30–50%; and the tool life was extended up to 170% over conventional machining.