Finite Element Analysis to Predict Thrust Force and Torque in Drilling of Aged and Annealed Inconel 718

Abstract

In this study, drilling of two kinds of Inconel 718 superalloys (aged and annealed) were simulated with FEM based Deform 3D V.11 software, and the effects of feed rate and cutting speed on thrust force and drilling torque have been investigated. A 5 mm diameter uncoated carbide twist drill with a web thickness of 0.75 mm was modelled, and drilling operations were simulated for two feed rates (0.05 and 0.1 mm/rev) and two cutting speeds (10 and 20 m/min). The workpieces were modelled by using Johnson-Cook (J-C) material model whose parameters acquired from the published literature. Thrust forces and drilling torques of aged Inconel 718 were found to be considerably larger than that of annealed Inconel 718 under the same cutting conditions.

Keywords

• Drilling
• Inconel 718
• Thrust force
• Drilling torque
• FEM

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