Effect of cryogenic coolant on machinability of difficult-to-machine Ni–Cr alloy using PVD-TiAlN coated WC tool

Ross, Nimel Sworna; Manimaran, G.

doi:10.1007/s40430-018-1552-3

Cited by 52 publications

(12 citation statements)

References 38 publications

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“…The workpiece will not be over hardened [118]. Cryogenic technology can also inhibit thermal softening but produce refined and dense grains of workpiece materials, substantially improving the hardness and even over hardening [119][120][121][122]. The improvement degree of workpiece hardness by cryogenic technology is higher than that of MQL (or NMQL) [123,124] because the cooling capability of the cryogenic medium (especially LN 2 and LCO 2 ) is considerably higher than that of MQL (or NMQL).…”

Section: Influence Mechanism Of Cmql On Materials Hardnessmentioning

confidence: 99%

Cryogenic minimum quantity lubrication machining: from mechanism to application

et al. 2021

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Cutting fluid plays a cooling-lubrication role in the cutting of metal materials. However, the substantial usage of cutting fluid in traditional flood machining seriously pollutes the environment and threatens the health of workers. Environmental machining technologies, such as dry cutting, minimum quantity lubrication (MQL), and cryogenic cooling technology, have been used as substitute for flood machining. However, the insufficient cooling capacity of MQL with normal-temperature compressed gas and the lack of lubricating performance of cryogenic cooling technology limit their industrial application. The technical bottleneck of mechanical—thermal damage of difficult-to-cut materials in aerospace and other fields can be solved by combining cryogenic medium and MQL. The latest progress of cryogenic minimum quantity lubrication (CMQL) technology is reviewed in this paper, and the key scientific issues in the research achievements of CMQL are clarified. First, the application forms and process characteristics of CMQL devices in turning, milling, and grinding are systematically summarized from traditional settings to innovative design. Second, the cooling-lubrication mechanism of CMQL and its influence mechanism on material hardness, cutting force, tool wear, and workpiece surface quality in cutting are extensively revealed. The effects of CMQL are systematically analyzed based on its mechanism and application form. Results show that the application effect of CMQL is better than that of cryogenic technology or MQL alone. Finally, the prospect, which provides basis and support for engineering application and development of CMQL technology, is introduced considering the limitations of CMQL.

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Section: Influence Mechanism Of Cmql On Materials Hardnessmentioning

confidence: 99%

Cryogenic minimum quantity lubrication machining: from mechanism to application

et al. 2021

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“…Wybór chłodziwa i warunków obróbki ma kluczowe znaczenie dla zwiększenia wydajności. W przypadku smarowania konwencjonalnego (obfitego, zalewowego) przy większej wydajności obróbki chłodziwo nie dociera do strefy skrawania i dochodzi do zanieczyszczenia środowiska [7]. Takie chłodzenie jest nieefektywne, ponieważ zależy głównie od różnicy temperatur.…”

Section: Chłodzenie Kriogeniczneunclassified

“…1. Wyniki zastosowania chłodzenia LCO 2 podczas frezowania Nimonic 80A [7] chłodzenie kriogeniczne budzi ostatnio zainteresowanie jako czysta i ekonomiczna technika [10].…”

Section: Chłodzenie Kriogeniczneunclassified

New developments in cooling techniques for machining superalloys

Jemielniak¹

2021

Mechanik

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The paper presents an update of the recent literature on advances in cooling techniques for machining of difficult to machine materials such as nickel and titanium-based alloys used in aero-engine and aerostructure applications. The review covers: cryogenic machining, minimum quantity lubrication, the combination of MQL and cryogenic cooling, and high-pressure lubricoolant supply. Examples of applications in industrial processes are also given.

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“…Researchers previously were focused more on varying the machining parameters and analyzing their influence, particularly on the tool life and machined surface integrity. Varying the machining conditions was also found very significant with the recent attention on the sustainability approaches such as under cryogenic conditions which reported positive implications [5,6]. This effort is very important for productive and successive machining without compromising the environmental aspect.…”

Section: Introductionmentioning

confidence: 97%

The correlation of surface roughness and tool edge condition under sustainable cryogenic machining

Halim

Haron

Ghani

et al. 2023

JMES

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This paper investigates the correlation between surface roughness of Inconel 718 and tool edge condition of ball nose inserts when milled at high speed. The cutting parameters were varied as follows; cutting speed: 120–140 m/min, feed rate: 0.15–0.25 mm/tooth, and axial depth of cut: 0.3–0.7 mm. For a sustainable machining approach, the experimental works were carried out under a smooth supply of cryogenic coolant which is a mix of liquid CO2, gas CO2, and compressed air. The experimental results revealed that the range of surface roughness obtained is from 0.114 to 0.197 µm. Along the cutting process, the tool wear patterns such as the abrasion, chipping, and the intermittent build-up-edge near the depth of cut cause the rapid increase of tool wear as well as the roughness of the machined surface with a significant correlation between them. However, the roughness was slowly reduced and became stable with the increase of notch wear. The finding could be used as a prediction reference for monitoring surface roughness and tool wear progress under cryogenic conditions. It also provides foundations for further research on machinability under this sustainable approach.

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Effect of cryogenic coolant on machinability of difficult-to-machine Ni–Cr alloy using PVD-TiAlN coated WC tool

Cited by 52 publications

References 38 publications

Cryogenic minimum quantity lubrication machining: from mechanism to application

Cryogenic minimum quantity lubrication machining: from mechanism to application

New developments in cooling techniques for machining superalloys

The correlation of surface roughness and tool edge condition under sustainable cryogenic machining

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