High speed machining of aero-engine alloys

Ezugwu, E. O.

doi:10.1590/s1678-58782004000100001

Cited by 130 publications

(59 citation statements)

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“…Ezugwu and Wang 2 , Ribeiro et al 15 , Rahman et al 16 , Yang and Liu 17 and Ezugwu 18 identified the main problems associated with the machining of titanium and studied tool wear and the mechanisms responsible for tool failure. Ribeiro et al 15 performed turning tests on Ti-6Al-4V with conventional uncoated carbides.…”

Section: Analysis Of Surface Roughness and Hardness In Titanium Alloymentioning

confidence: 99%

Analysis of surface roughness and hardness in titanium alloy machining with polycrystalline diamond tool under different lubricating modes

Revankar¹,

Shetty

Rao

et al. 2014

Mat. Res.

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The present work deals with the investigation on machining of difficult-to-machine material titanium alloy (Ti-6Al-4V) using poly crystalline diamond (PCD) tool under different coolant strategies, namely dry, flooded and MQL. Taguchi technique has been employed and the optimization results indicated that MQL lubricating mode with cutting speed of 150 m/min, feed rate of 0.15 mm/rev, nose radius of 0.6 mm and 0.25 mm depth of cut is necessary to minimize surface roughness and dry mode with cutting speed of 150 m/min, feed rate of 0.15 mm/rev, nose radius of 0.6 mm and 0.75 mm depth of cut is necessary to maximize surface hardness. The results indicate the substantial benefit of the minimum quantity of lubrication (MQL) and justify PCD inserts to be the most functionally satisfactory commercially available cutting tool material for machining titanium alloys for better surface finish and hardness.

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Section: Analysis Of Surface Roughness and Hardness In Titanium Alloymentioning

confidence: 99%

Analysis of surface roughness and hardness in titanium alloy machining with polycrystalline diamond tool under different lubricating modes

Revankar¹,

Shetty

Rao

et al. 2014

Mat. Res.

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“…This method is characterized by the evaporation of the aerosol, which is composed from oil, water and gas which is used for transporting the emulsion to a place near the cutting edge. [3] Selection of the gas which transports the emulsion to the cutting edge is also very important. Experiments with machining Inconel 718 imply that argon is unsuitable for this application, especially because of its low thermal conductivity and heat capacity, which leads to higher temperatures at the cutting edge in comparison to using air.…”

Section: Increasing the Cutting Tool Lifementioning

confidence: 99%

“…However, the cutting forces are higher because of the absence of material softening at high temperatures. [3] There are many others methods which can lead to increased cutting tool life when Inconel 718 is machined (such as cooling with pressurized air, plasma assisted machining [1] etc.). The main methods are described.…”

Section: Increasing the Cutting Tool Lifementioning

confidence: 99%

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Durability of the Cutting Tool with Different Thin Layers when Inconel 718 is Machined

Schorník¹,

Zetek²,

Bakša³

2016

DAAAM Proceedings

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Inconel 718 alloy exhibits high strength and creep-rupture strength at high temperatures. These properties are heavily influenced by heat treatment. Machining, especially milling of this alloy is very difficult because of the high strength and hardness at high temperature. Self-hardening is one of the problems, which leads to enormous tool wear. Productivity of machining is relatively low. This paper is focused on the factors which have the greatest effect on the cutting tool wear and the machined surface quality when the Inconel 718 is machined. There is a description of these factors and their explanations. The experiment for comparing three different cutting tool materials is described. The experiment is also focused on the confirmation of the theoretical information.

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“…Thus, high-pressure coolant cutting is considered effective for reducing tool wear [8][9][10]. Further, the improvement of chip control, particularly chip breaking performance, is also expected by the high-pressure coolant supplied [11].…”

Section: Introductionmentioning

confidence: 99%

Tool wear of sintered cubic boron nitride compact in cutting hardened steel with high-pressure coolant supplied

Wada¹,

Okayama²,

Morigo³

2016

WIT Transactions on the Built Environment

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Hardened steel is used for dies and molds, and is quenched and tempered to improve its mechanical properties and wear resistance. For dimensional accuracy, hardened steel is machined by a metal removal process. High-speed cutting is an effective method of improving productivity. As, the cutting temperature rises very high in high-speed cutting, the tool materials require both good wear-resistance and heat-resistance, and the cutting parts must be cooled for efficacy and efficiency. In this study, hardened steel was turned with a high-pressure coolant supplied, the chip configurations, the tool wear and the surface roughness were experimentally investigated. The hardened steel used was an ASTM D2 coldworked die steel (60HRC). The results are as follows: (1) In turning with a highpressure coolant supplied, the effectiveness of chip breaking performance was improved. In this case, the chip length was shorter with the increase of the coolant pressure, and the chip length was longer with the increase of the cutting speed. (2) In the case of a cutting speed of 10.00 m/s, large wear on the flank face was observed in the dry cutting. It was possible to suppress the tool wear on the flank face with a high-pressure coolant supplied. (3) In the high-pressure coolant cutting method of hardened steel with a cBN tool at a cutting speed of 10.00 m/s, a cBN grain size of 5.0 µm, 45 cBN grain/55 binding phase and main element of the binder phase of TiCN-Al was an effective tool material. The surface roughness by cutting with this cBN tool was almost constant up to a cutting distance of 1080 m.

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High speed machining of aero-engine alloys

Abstract: High Speed Machining of Aero-Engine Alloys

Cited by 130 publications

References 0 publications

Analysis of surface roughness and hardness in titanium alloy machining with polycrystalline diamond tool under different lubricating modes

Analysis of surface roughness and hardness in titanium alloy machining with polycrystalline diamond tool under different lubricating modes

Durability of the Cutting Tool with Different Thin Layers when Inconel 718 is Machined

Tool wear of sintered cubic boron nitride compact in cutting hardened steel with high-pressure coolant supplied

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