Effect of Cutting Conditions on Machinability of Superalloy Inconel 718 During High Speed Turning with Coated and Uncoated PCBN Tools

Bushlya, Volodymyr; Zhou, Jinming; Ståhl, Jan-Eric

doi:10.1016/j.procir.2012.07.064

Cited by 82 publications

(43 citation statements)

References 15 publications

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“…In previous works developed by the authors, a systematic and broader analysis of tool wear can be found for this type of cutting process both with coolant and in dry conditions [22,23].…”

Section: Tool Wear and Tool Lifementioning

confidence: 99%

PCBN Performance in High Speed Finishing Turning of Inconel 718

Díaz-Álvarez

Criado

Miguélez

et al. 2018

Metals

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Inconel 718 is a Ni superalloy widely used in high responsibility components requiring excellent mechanical properties at high temperature and elevated corrosion resistance. Inconel 718 is a difficult to cut material due to the elevated temperature generated during cutting, its low thermal conductivity, and the strong abrasive tool wear during cutting process. Finishing operations should ensure surface integrity of the component commonly requiring the use of hard metal tools with sharp tool edges and moderate cutting speeds. Polycrystalline cubic boron nitride (PCBN) tools recently developed an enhanced toughness suitable for these final operations. This paper focuses on the study of PCBN tools performance in finishing turning of Inconel 718. Several inserts representative of different manufacturers were tested and compared to a reference carbide tool. The evolution of tool wear, surface roughness, and cutting forces was analyzed and discussed. PCBN tools demonstrated their suitability for finishing operations, presenting reasonable removal rates and surface quality.

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“…In previous works developed by the authors, a systematic and broader analysis of tool wear can be found for this type of cutting process both with coolant and in dry conditions [22,23].…”

Section: Tool Wear and Tool Lifementioning

confidence: 99%

PCBN Performance in High Speed Finishing Turning of Inconel 718

Díaz-Álvarez

Criado

Miguélez

et al. 2018

Metals

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“…It is also obvious that increase of cutting speed has more influence on reduced tool life. Bushlya et al [42] reported that tool life of PCBN tools showed a reduction of 15% with a feed rate increase of 100%. This tool life reduction, however, may be neglected, as productivity due to feed rate increment outperforms tool life duration.…”

Section: Tool Wearmentioning

confidence: 99%

“…PCBN tools (CBN content being an important parameter of PCBN tools [49]), were reported to perform up to speed values of 1250 m/min [50]. However, Bushlya et al [42] reported that with the increase of cutting speeds above 300 m/min, coating provides no benefits in PCBN tools. Tanaka et al [51] concluded that PCBN tools displayed excellent wear resistance at cutting speed over 300 m/min in machining of Inconel 718.…”

Section: Tool Wearmentioning

confidence: 99%

Effects of cutting parameters on machinability characteristics of Ni-based superalloys: a review

Kaya

Akyüz

2017

Open Engineering

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Nickel based superalloys offer high strength, corrosion resistance, thermal stability and superb thermal fatigue properties. However, they have been one of the most difficult materials to machine due to these properties. Although we are witnessing improved machining strategies with the developing machining, tooling and inspection technologies, machining of nickel based superalloys is still a challenging task due to in-process strains and post process part quality demands. Selecting optimum machining parameters for quality, productivity and profitability is of paramount importance. Many studies have been conducted on various aspects of machinability of nickel based superalloys including defining the optimum cutting parameters, to develop a better understanding of machining them. The recent studies suggest new findings, and discuss previously reported results, related to the concerns of superalloy machining. This review presents the influences of the most significant cutting parameters on various machinability characteristics with respect to the recent studies as well as the previous ones. The reviewed machinability characteristics may be listed as: tool wear, cutting forces and surface integrity.

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“…Tool wear measurements are also routinely taken when conducting research in this area, for example in tool geometry [2,3] or microstructural design [4,5], or considering the role of different cutting conditions [6,7]. A number of different techniques are often used to evaluate tool wear, irrespective of the surface treatment or coating used, for example optical methods [8,9], acoustic emission detection [10][11][12], ultrasonic testing [13,14], and thermal/infrared measurements [15,16].…”

Section: Introductionmentioning

confidence: 99%

Using Barkhausen noise to measure coating depth of coated high-speed steel

Seemuang

Slatter

2017

Int J Adv Manuf Technol

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Coated high-speed steel tools are widely used in machining processes as they offer an excellent tool life to cost ratio, but they quickly need replacing once the coated layer is worn away. It would be therefore useful to be able to measure the tool life remaining non-destructively and cheaply. To achieve this, the work presented here aims to measure the thickness of the coated layer of high-speed cutting tools by using Barkhausen noise (BHN) techniques. Coated highspeed steel specimens coated with two different materials (chromium nitride (CrN), titanium nitride (TiN)) were tested using a cost-effective measuring system developed for this study. Sensory features were extracted from the signal received from a pick-up coil and the signal features, Root mean square, peak count, and signal energy, were successfully correlated with the thickness of the coating layer on high-speed steel (HSS) specimens. The results suggest that the Barkhausen noise measuring system developed in this study can successfully indicate the different thickness of the coating layer on CrN/TiN coated HSS specimens.

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Effect of Cutting Conditions on Machinability of Superalloy Inconel 718 During High Speed Turning with Coated and Uncoated PCBN Tools

Cited by 82 publications

References 15 publications

PCBN Performance in High Speed Finishing Turning of Inconel 718

PCBN Performance in High Speed Finishing Turning of Inconel 718

Effects of cutting parameters on machinability characteristics of Ni-based superalloys: a review

Using Barkhausen noise to measure coating depth of coated high-speed steel

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