3D FE- SIMULATION OF THERMALLY ASSISTED TURNING OF INCONEL-718 FOR CUTTING FORCES PREDICTION

An experimental study has been performed to assess the feasibility of using a hybrid machining system to improve the machinability of Inconel 718. An assembled plasma enhanced machining (PEM) system is described, and experimental results obtained from both conventional and plasma enhanced machining of Inconel 718 are compared. Several advantages of PEM over conventional machining are demonstrated, including improvement of surface roughness, lower cutting forces and extended tool life.

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A cutting forces model for milling Inconel 718 alloy based on a material constitutive law

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406212469167 ◽

2012 ◽

Vol 227 (8) ◽

pp. 1761-1775 ◽

Cited By ~ 9

Author(s):

HZ Li ◽

J Wang

Keyword(s):

Cutting Forces ◽

Inconel 718 ◽

Shear Plane ◽

Material Model ◽

Constitutive Law ◽

Percentage Error ◽

Force Model ◽

Inconel 718 Alloy ◽

Average Percentage ◽

Constitutive Material Model

This article presents a cutting force model for the milling of Inconel 718 whose machinability is considered to be very poor. The Johnson–Cook constitutive material model is used to determine the flow stress of Inconel 718 while the shear angle is determined based on a shear plane model assuming that the total energy on the shear plane plus the energy on the rake face is minimum. The temperature in the machining region is determined by using an iterative process. Finally, the cutting forces on each tooth of the milling cutter are calculated from its chip load considering the oblique cutting effects. The model is then verified by comparing the model predictions with the experimental data under the corresponding conditions, which shows a relatively good agreement with an average percentage error of 10.5% along the feed and normal directions.

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Measurement-based modelling of cutting forces in micro-milling of Inconel 718

International Journal of Nanomanufacturing ◽

10.1504/ijnm.2017.10003131 ◽

2017 ◽

Vol 13 (1) ◽

pp. 1

Author(s):

Likun Si ◽

Guangjun Li ◽

Xiaochen Hu ◽

Zhenyuan Jia ◽

Hua Wang ◽

...

Keyword(s):

Cutting Forces ◽

Inconel 718 ◽

Micro Milling

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A Study of Cutting Forces in High-Speed Dry Milling of Inconel 718

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.500.105 ◽

2012 ◽

Vol 500 ◽

pp. 105-110 ◽

Cited By ~ 2

Author(s):

Huai Zhong Li ◽

Jun Wang

Keyword(s):

Cutting Forces ◽

Inconel 718 ◽

High Speed ◽

Cutting Speed ◽

High Yield ◽

Dry Milling ◽

Machining Processes ◽

Dry Cutting ◽

High Tendency ◽

Coated Carbide

nconel 718 is one of the most commercially important superalloys but with very poor machinability. It has a very high yield stress and a high tendency to adhesion and work-hardening. A recent trend of improving the machining processes of difficult-to-cut materials is to move towards dry cutting operations. This paper presents an experimental study of the cutting forces in high speed dry milling of Inconel 718 using a milling cutter with coated carbide inserts. It is found that the peak cutting forces increase with an increase in chip load in a nonlinear way, but cutting speed does not show a significant influence on the cutting force for the range of cutting speeds tested in this study.

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