Prediction of cutting force for milling of inconel 718 under cryogenic condition by response surface methodology / Nurul Hayati Abdul Halim...[et al.]

Abdul Halim, Nurul Hayati and Che Haron, Che Hassan and Abdul Ghani, Jaharah and Azhar, Muammar Faiq (2019) Prediction of cutting force for milling of inconel 718 under cryogenic condition by response surface methodology / Nurul Hayati Abdul Halim...[et al.]. Journal of Mechanical Engineering (JMechE), 16 (1). pp. 1-16. ISSN 1823-5514 ; 2550-164X


In order to identify the influence of different cutting parameters on cutting force under cryogenic cooling assistance, this paper presents an experimental investigation on the influence by high-speed milling Inconel 718 using carbide coated ball nose milling inserts. For Design of Experiment (DOE), Box-Behnken Response Surface Methodology (RSM) with 29 experiments was applied to accommodate 4 factors; cutting speed: 120-140 m/min, feed rate: 0.15-0.25 mm/tooth, axial depth of cut: 0.3-0.7 mm, and radial depth of cut: 0.2-0.6 mm at three levels each. The milling process was performed under a CO2 cryogenic environment using a new design of cryogenic controlling system for consistent and efficient cooling effect at the cutting zone. The experimental results found the forces varied from as low as 112 N up to a maximum of 452 N. The analysis of variance (ANOVA) confirmed the axial depth of cut as the dominant factor influencing the cutting forces followed by the interaction between feed rate and radial depth of cut. The forces were significantly increased with the axial depth of cut due to the increase of the size of cut by the insert. Meanwhile, the developed statistical equation model reported an average error of 4.72% between the predicted and actual cutting forces. With 95.28% of confidence level, this confirms the adequacy of the predictive model to be used within the range of the investigated parameters. Thereby, the numerical optimization suggested parameters of Vc: 140 m/min, fz: 0.25 mm/tooth, ap: 0.3 mm, and ae: 0.21 mm to be applied to achieve a cutting force as low as 117.72 N. The correlation between the cutting forces along with tool wear progress and pattern was also discussed.


Item Type: Article
Email / ID Num.
Abdul Halim, Nurul Hayati
Che Haron, Che Hassan
Abdul Ghani, Jaharah
Azhar, Muammar Faiq
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Mechanical Engineering
Journal or Publication Title: Journal of Mechanical Engineering (JMechE)
UiTM Journal Collections: UiTM Journal > Journal of Mechanical Engineering (JMechE)
ISSN: 1823-5514 ; 2550-164X
Volume: 16
Number: 1
Page Range: pp. 1-16
Keywords: Inconel 718; Cryogenic Machining; Response Surface Methodology; Coated Tungsten Carbide; Milling
Date: 2019
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