Effects of high-pressure cooling in the flank and rake faces of WC tool on the tool wear mechanism and process conditions in turning of alloy 718

Alagan, Nageswaran Tamil; Hoier, Philipp; Zeman, Pavel; Klement, Uta; Beňo, Tomáš; Wretland, Anders

doi:10.1016/j.wear.2019.05.037

Cited by 29 publications

(11 citation statements)

References 20 publications

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“…In principle, this method has mainly the effect of cooling (compressed CO2) and removing (blowing) chips from the cutting zone [Humár 2003], [Fernandez 2014]. Application of high-pressure cooling on the flank face had a positive effect on tool life and overall machining performance of Alloy 718 [Alagan, N.T. et al 2019].…”

Section: Machinability Of Inc 718mentioning

confidence: 99%

The Machinability of Inc 718 by Ceramic Inserts

Varhaník¹,

Piska²

2021

MM SJ

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The work deals with a machinability of Inconel® 718 construction material (hereafter referred to as “INC 718”). This chromium-nickel alloy has an austenitic structure, which in conjunction with its low thermal conductivity is one of the causes of a worse machinability. The aim of the work was to increase the productivity of the roughing turning process. There are more ways to improve the machinability of the INC 718, starting from the heat treatment of the material and ending with the application of process fluids. This work is based on real requirements of a company and therefore the possibilities of elimination of the worse machinability were limited by economic and technological aspects. For this reason, the main tool for increasing the productivity of the machining process was changing the material of the cutting tool and fine-tuning of the cutting conditions. In another part of the work, an evaluation of the experimentally determined force ratios of the reference and newly designed technology, which is the basis for the stress-strain analysis, have been made. The conclusion of the research highlights the newly designed process in terms of machining times and the volume of material achieved per unit of the cutting edge durability.

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Section: Machinability Of Inc 718mentioning

confidence: 99%

The Machinability of Inc 718 by Ceramic Inserts

Varhaník¹,

Piska²

2021

MM SJ

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“…Especially in the process of metal cutting, due to the severe friction between the tool and workpiece, a large amount of heat is generated, so a cutting fluid is employed to take the heat away and improve the machining performance. 13,14 However, it should be noted that the Leidenfrost effect of cutting fluid at the machining area is inevitable, 15 which makes the cutting fluid boil in a film regime and largely decreases the heat transfer efficiency, 16,17 thus inducing a decline in the quality of the machined surface, waste of cutting fluid, and even environmental pollution. Herein, it is of great importance to explore and suppress the Leidenfrost phenomenon of cutting fluid at the interface during the metal cutting process.…”

Section: ■ Introductionmentioning

confidence: 99%

Delayed Leidenfrost Effect of a Cutting Droplet on a Microgrooved Tool Surface

Guo

Liu

et al. 2023

Langmuir

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Regulation over the generation of the Leidenfrost phenomenon in liquids is vitally important in a cutting fluid/tool system, with benefits ranging from optimizing the heat transfer efficiency to improving the machining performance. However, realizing the influence mechanism of liquid boiling at various temperatures still faces enormous challenges. Herein, we report a kind of microgrooved tool surface by laser ablation, which could obviously increase both the static and dynamic Leidenfrost point of cutting fluid by adjusting the surface roughness (Sa). The physical mechanism that delays the Leidenfrost effect is primarily due to the ability of the designed microgroove surface to store and release vapor during droplet boiling so that the heated surface requires higher temperatures to generate sufficient vapor to suspend the droplet. We also find six typical impact regimes of cutting fluid under various contact temperatures; it is worth noting that Sa has a great influence on the transform threshold among six impact regimes, and the likelihood that a droplet will enter the Leidenfrost regime decreases with increasing Sa. In addition, the synergistic effect of Sa and tool temperature on the droplet kinetics of cutting droplets is investigated, and the relationship between the maximum rebound height and the dynamic Leidenfrost point is correlated for the first time. Significantly, cooling experiments on the heated microgrooved surface are performed and demonstrate that it is effective to improve the heat dissipation ability of cutting fluid by delaying the Leidenfrost effect on the microgrooved heated surface.

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“…Tamil Alagan et al [33] studied the effect of HPJC in the flank and Ranke faces of WC tool on the tool wear mechanism and process conditions in the turning of Inconel 718. They carried out facing tests with a round cement uncoated carbide tool at 45 and 90 m/min of cutting speed and 0.2 mm/rev of feed.…”

Section: Introductionmentioning

confidence: 99%

“…The most important contributions in the machining of Haynes 282 to date are summarized in Table 1. Tamil Alagan, N. [33] Inconel 718…”

Section: Introductionmentioning

confidence: 99%

High-Pressure Cooling in Finishing Turning of Haynes 282 Using Carbide Tools: Haynes 282 and Inconel 718 Comparison

Díaz-Álvarez

Cantero

et al. 2021

Metals

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Despite the interest of industry in nickel-based superalloys and its main features (high temperatures resistance, hardness, low thermal conductivity, among others), even today they are still materials that are difficult to cut. Cutting tools withstand both high pressures and temperatures highly localized at the cutting area because of the elevated work hardening of the alloy and the problems for the cutting fluid to access the region, with the consequent strong tool wear. The use of cutting fluids at high pressures improves coolant access and heat removal. This paper analyzed the machining of Haynes 282 alloy by means of coated carbide tools under high-pressure cutting fluids at finishing conditions. Tests were developed at different cutting speeds and feeds quantifying the machining forces, surface roughness, tool wear, and tool life. Values of 45.9 min and Ra between 2 µm and 1 µm were obtained in this study for tool life and roughness, respectively, for the combination of cutting speed 50 m/min and feed 0.1 mm/rev. Likewise, a comparative analysis is included with the results obtained in previous works developed by the authors relating to the finishing turning of Haynes 282 and Inconel 718 under conventional pressure cooling. The comparative analysis with Inconel 718 is included in the study due to its importance within the nickel base superalloys being widely used in industry and widely analyzed in scientific literature.

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Effects of high-pressure cooling in the flank and rake faces of WC tool on the tool wear mechanism and process conditions in turning of alloy 718

Cited by 29 publications

References 20 publications

The Machinability of Inc 718 by Ceramic Inserts

The Machinability of Inc 718 by Ceramic Inserts

Delayed Leidenfrost Effect of a Cutting Droplet on a Microgrooved Tool Surface

High-Pressure Cooling in Finishing Turning of Haynes 282 Using Carbide Tools: Haynes 282 and Inconel 718 Comparison

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