Investigation of machining performance in high pressure jet assisted turning of Inconel 718: A numerical model

Courbon, C.; Šajn, Viktor; Kramar, Davorin; Rech, J.; Kosel, F.; Kopač, Janez

doi:10.1016/j.jmatprotec.2011.06.006

Cited by 67 publications

(23 citation statements)

References 23 publications

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“…This can be explained by the fact that the highpressure lubrication can greatly reduce the temperature in the cutting zone [16][17][18]. In addition, the cutting pressure decreases slightly to a value of approximately 1950 MPa.…”

Section: Roughing Testsmentioning

confidence: 99%

Degradation modes and tool wear mechanisms in finish and rough machining of Ti17 Titanium alloy under high-pressure water jet assistance

Ayed

Germain

Ammar

et al. 2013

Wear

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. This article presents the results of an experimental study on the Ti17 titanium alloy, which was carried out to analyze tool wear and the degradation mechanisms of an uncoated tungsten carbide tool insert. Two machining conditions, roughing and finishing, have been studied under different lubrication conditions. The experimental procedure included measurement of the cutting forces and the surface roughness. Different techniques have been used to explain the tool wear mechanisms. Distribution maps of the elemental composition of the titanium alloy and the tool inserts have been created using Energy Dispersive X-ray Spectroscopy (EDS). An area of material deposition on the tool rake face, characterized by a high titanium concentration has been observed. The width of this area and the concentration of titanium, decrease when increasing water jet pressure. The study shows that wear mechanisms, with and without high-pressure water jet assistance (HPWJA) are not the same. For example, for the roughing condition using conventional lubrication, the temperature in the cutting area becomes very high, this causes plastic deformation of the cutting edge which results in its rapid collapse. By contrast, this problem disappears when machining with HPWJA. In addition, the evolution of flank wear (VB) is stabilized with high-pressure lubrication. In this case, the most critical degradation mode is due to notch wear (VBn) leading to the sudden rupture of the cutting edge.

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Section: Roughing Testsmentioning

confidence: 99%

Degradation modes and tool wear mechanisms in finish and rough machining of Ti17 Titanium alloy under high-pressure water jet assistance

Ayed

Germain

Ammar

et al. 2013

Wear

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“…There is also almost a total lack of work concerning the modeling cryogenic and highpressure water-jet assistance. Only a few studies have been focused on this type of simulation, but none have taken into account the fluid structure interaction, making them very simplistic [8]. In order to simulate the high speed water-jet, the Hugoniot equation of state is often employed.…”

Section: Introductionmentioning

confidence: 99%

Development of a numerical model for the understanding of the chip formation in high-pressure water-jet assisted machining

Ayed¹,

Robert²,

Germain³

et al. 2016

Finite Elements in Analysis and Design

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a b s t r a c tThe aim of this study is to develop a new numerical cutting model that includes fluid structure interaction and to take into account heat transfer between the water-jet, the workpiece and the chip. This has been achieved using a CEL (Coupled-Eulerian-Lagrangian) technique, an algorithm has been developed to ensure heat exchange between the fluid and the structure. This new model allows decoupling of the mechanical and the thermal effects of the water-jet on chip formation and fragmentation. It has been demonstrated that fragmentation of the chip is ensured by the combination of the thermal and the mechanical effects of the water-jet. Moreover, the tool rake temperature is reduced by more than 400°C, the tool/chip contact length is also decreased by about 30%.

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“…In the formula (1), Y c = lgC Fc ， X 1 =lga p ， X 2 =lg f ， X 3 =lgv ， C c =lgC Fc ， and the formulas (2) and (3) are the same. The simplified equations are obtained: …”

Section: Established Empirical Formula Of Cutting Forcementioning

confidence: 99%

“…Song Tingke [2]of the Dalian University of Technology studied experimentally turning of superalloy GH4169 by using PCBN tool in 2010. Obtained PCBN tool wear will be increased with the increase of cutting speed, at the same time increase of PCBN tool nose rounded can reduce amount of tool wear.…”

Section: Introductionmentioning

confidence: 99%

Experiential Formula of Cutting Force Established in Turning High Temperature Alloy

Yu¹,

Wu²,

Wang³

et al. 2015

IJCA

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In order to study the experiential formula of cutting force and the influence of each cutting parameter for turning superalloy GH4169, the orthogonal experiment is applied to coated carbide tools turning high-temperature alloy GH4169, and got empirical formula of cutting force carbide using cutting tools for turning superalloy GH4169. The results show that: the greatest impact on the cutting force factor decreases in the order of the cutting depth, feed and cutting speed influence on the test results.

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Investigation of machining performance in high pressure jet assisted turning of Inconel 718: A numerical model

Cited by 67 publications

References 23 publications

Degradation modes and tool wear mechanisms in finish and rough machining of Ti17 Titanium alloy under high-pressure water jet assistance

Degradation modes and tool wear mechanisms in finish and rough machining of Ti17 Titanium alloy under high-pressure water jet assistance

Development of a numerical model for the understanding of the chip formation in high-pressure water-jet assisted machining

Experiential Formula of Cutting Force Established in Turning High Temperature Alloy

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