New observations on tool wear mechanism in dry machining Inconel718

Hao, Zhaopeng; Gao, Dong; Fan, Yihang; Han, Rong Di

doi:10.1016/j.ijmachtools.2011.08.018

Cited by 97 publications

(24 citation statements)

References 9 publications

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“…Flank wear increases remarkably in conventional machining and includes three stages: initial wear stage, steady wear stage, and rapid wear stage. These experiment results are supported by references [27,28]. The slope of wear curve in the initial wear stage is larger than the LAM, which indicates that the wear speed is faster in conventional machining.…”

Section: Tool Wearsupporting

confidence: 68%

Cutting performance and coated tool wear mechanisms in laser-assisted milling K24 nickel-based superalloy

Kong

Yang

Zhang

et al. 2014

Int J Adv Manuf Technol

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Laser-assisted machining (LAM) offers the ability to machine superalloys more efficiently and economically by providing the local heating of the workpiece prior to material removed by traditional cutting tool. The effectiveness of LAM was studied by measuring the cutting forces, surface roughness, and tool wear under various material removal temperatures (Tmr). It is demonstrated by an appropriate 30-70 % decrease in cutting force, an obvious reduction in the surface roughness, and an appropriate 46 % increase in coated tool life over conventional machining (CM). Machining experiments are then carried out to evaluate the wear behavior of different commercially available coated tools (TiCN, TiAlN, Ti(CN)/ Al 2 O 3 /TiN). These coatings were selected since they have the capability to withstand the temperatures experienced in LAM. The results of laser-assisted milling experiments indicate that abrasive and adhesive wear were the dominant wear mechanisms, controlling the deterioration of the carbide tools. The TiAlN-coated tools exhibited the highest wear resistance at normal cutting speeds of 30 m/min. The triple layer CVD coated tool failure mode was non-uniform flank wear due to the adhesion and depth-of-cut notching. TiCN performed poorly due to their inferior adhesion characteristics with the base material. The main failure mode for TiCN was nonuniform flank wear and chipping, and also, a significant notch was observed. Sub-surface quality has been evaluated by observing the microstructure of cross sections and measuring the micro-hardness.

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Section: Tool Wearsupporting

confidence: 68%

Cutting performance and coated tool wear mechanisms in laser-assisted milling K24 nickel-based superalloy

Kong

Yang

Zhang

et al. 2014

Int J Adv Manuf Technol

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“…From the experimental results, it was concluded that the CBN-, TiAlN-and TiAlN/AlCrN-coated tools were acceptable for high-speed machining. Hao et al 6 used TiAlN-coated carbide tool for machining an Inconel 718 in dry conditions. The high cutting temperature (above 619 C) at the edge of the cutting tool causes the tool to lose its strength during dry machining.…”

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of Performances of TiAlN-, AlCrN- and AlCrN/TiAlN-Coated Carbide Cutting Tools and Uncoated Carbide Cutting Tools on Turning EN24 Alloy Steel

Kumar

Prabu

Kumar³

2017

J. Adv. Manuf. Syst.

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In the present work, the performances of TiAlN-, AlCrN-and AlCrN/TiAlN-coated and uncoated tungsten carbide cutting tool inserts are evaluated from the turning studies conducted on EN24 alloy steel workpiece. The output parameters such as cutting forces, surface roughness and tool wear for TiAlN-, AlCrN-and AlCrN/TiAlN-coated carbide cutting tools are compared with uncoated carbide cutting tools (K10). The design of experiment based on Taguchi's approach is used to obtain the best turning parameters, namely cutting speed (V ), feed rate (f) and depth of cut (d), in order to have a better surface¯nish and minimum tool°ank wear. An orthogonal array (L 9 Þ was used to conduct the experiments. The results show that the AlCrN/ TiAlN-coated cutting tool provided a much better surface¯nish and minimum tool°ank wear. The minimum tool°ank wear and minimum surface roughness were obtained using AlCrN/ TiAlN-coated tools, when V ¼ 160 m/min, f ¼ 0:318 mm/rev and d ¼ 0:3 mm.

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“…Yao et al 18 found that the use of different cutter orientations have significant effects on the tool life, workpiece surface integrity and surface morphology. Hao et al 19 analyzed the tool wear morphology and mechanism in dry machining of Inconel 718, and they found that adhesion and lamellar wear caused tool wear at low cutting speed 20m/min, while the element diffusion between tool and workpiece and oxidation reaction all accelerate the formation and peeling of wear debris. While turning N-155 iron-nickelbase superalloy, Davoodi and Eskandari 20 found that cutting speed was the most significant factor and the most dominant tool failure modes were adhesion wear.…”

Section: Introductionmentioning

confidence: 99%

On the Machinability and Surface Finish of Superalloy GH909 Under Dry Cutting Conditions

Luo

2018

Mat. Res.

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GH 909 alloy is a kind of low thermal expansion superalloy with high strength and low expansion coefficient. It is mainly used for manufacturing of aero-engine turbine casings, sealing ring, vanes and other gap control parts, to improve the working efficiency and thrust of the engine as well as to reduce gas loss and fuel consumption. However, the machinability is still a problem that restricts the application of GH909. This paper investigated the machinability referring to cutting forces, surface quality and tool wear in the milling process with carbide tool. The main conclusions are: (1) GH909 has similar machinability with other Nickel-based alloys, cutting velocity does not have great influence on cutting forces for small radial cutting depth. (2) Good machined surface quality can be get for cutting velocity around 70m/min. (3) To get good tool performance and reduce tool wear rate, cutting velocity can be set to no larger than 80m/min.

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New observations on tool wear mechanism in dry machining Inconel718

Cited by 97 publications

References 9 publications

Cutting performance and coated tool wear mechanisms in laser-assisted milling K24 nickel-based superalloy

Cutting performance and coated tool wear mechanisms in laser-assisted milling K24 nickel-based superalloy

Comparative Evaluation of Performances of TiAlN-, AlCrN- and AlCrN/TiAlN-Coated Carbide Cutting Tools and Uncoated Carbide Cutting Tools on Turning EN24 Alloy Steel

On the Machinability and Surface Finish of Superalloy GH909 Under Dry Cutting Conditions

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