Surface integrity when machining age hardened Inconel 718 with coated carbide cutting tools

Arunachalam, R. M.; Mannan, MA; Spowage, A.C.

doi:10.1016/j.ijmachtools.2004.05.005

Cited by 221 publications

(117 citation statements)

References 12 publications

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“…Attempts have been made in the past with due focus on surface integrity induced by turning operation of Inconel 718 considering the machining environment. The reported findings state reduction in surface roughness under different machining environments like wet [5,6], MQL [7,8], hybrid machining [9], cooling air and minimum quantity lubrication (CAMQL) [10] and liquid nitrogen (LN2) [11]. Further the beneficial effects of machining environment in inducing lesser tensile or more compressive residual stresses have been also reported for wet [5,6] and cryogenic [12] environments, to mention a few.…”

Section: Introductionmentioning

confidence: 92%

“…The reported findings state reduction in surface roughness under different machining environments like wet [5,6], MQL [7,8], hybrid machining [9], cooling air and minimum quantity lubrication (CAMQL) [10] and liquid nitrogen (LN2) [11]. Further the beneficial effects of machining environment in inducing lesser tensile or more compressive residual stresses have been also reported for wet [5,6] and cryogenic [12] environments, to mention a few. Podgorkov and Godlevski around 1990s proposed a new pollution-free cutting technique with water vapour as coolant and lubricant in machining, and further works on it reported decrease in surface roughness of various work materials like C45 steel [13], ANSI 304 stainless steel [14] and Titanium alloy (Ti6Al-4V) [15].…”

Section: Introductionmentioning

confidence: 92%

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Influence of Machining Environment on Surface Integrity in HSM of Inconel 718 with Productivity Perspective

Kadam

Pawade

2017

Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)

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Abstract:This paper investigates the effect of material removal rate (MRR) and mainly machining environment on resultant surface integrity in high-speed machining (HSM) of Inconel 718. For this high-speed turning is carried out for three different cutting speeds, feedrates and depth of cut under dry, flood coolant and water vapour machining environments. The results show that flood cooling is ineffective in high-speed machining. Water vapours acts as a coolant and lubricant, and hence is highly effective in lowering surface roughness and surface damages in machining. However at very high material removal rates, dry machining seems to be an economical option. Under all the environments the residual stresses were found to be compressive in nature at all MRR levels. Keeping in view green manufacturing, good productivity and better quality, it is suggested that machining of Inconel 718 under water vapour environment is an ideal approach.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 92%

Influence of Machining Environment on Surface Integrity in HSM of Inconel 718 with Productivity Perspective

Kadam

Pawade

2017

Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)

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“…But in some cases the higher plastic deformation which is caused by negative tool geometry leads an increase in temperature and tensile residual stress. [9] The cutting conditions are very important in this problem. The round inserts are better for the machined surface quality, because they have longer contact length compared to the square inserts.…”

Section: Influence Of the Cutting Tool On The Residual Stressmentioning

confidence: 99%

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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“…In the investigation of the cutting process effect on machining performance and surface integrity with coated and uncoated carbide tools (Outeiro et al 2008), results show that higher surface residual stresses are generated when machining of Inconel 718 with the uncoated tool than the coated tool. Furthermore, when machining the age hardened Inconel 718 with the coated carbide tools, Arunachalam et al (2004) found that finishing operations may not produce a high value of compressive residual stresses and may sometimes even generate tensile residual stresses if the radial cutting length is more than 30 mm.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of surface roughness, cutting forces, productivity and Power consumption when turning of Inconel 718

Tebassi¹,

Yallese²,

Khettabi³

et al. 2016

10.5267/j.ijiec

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Nickel based super alloys are excellent for several applications and mainly in structural components submitted to high temperatures owing to their high strength to weight ratio, good corrosion resistance and metallurgical stability such as in cases of jet engine and gas turbine components. The current work presents the experimental investigations of the cutting parameters effects (cutting speed, depth of cut and feed rate) on the surface roughness, cutting force components, productivity and power consumption during dry conditions in straight turning using coated carbide tool. The mathematical models for output parameters have been developed using Box-Behnken design with 15 runs and Box-Cox transformation was used for improving normality. The results of the analysis have shown that the surface finish was statistically sensitive to the feed rate and cutting speed with the contribution of 43.58% and 23.85% respectively, while depth of cut had the greatest effect on the evolution of cutting force components with the contribution of 79.87% for feed force, 66.92% for radial force and 66.26% for tangential force. Multi-objective optimization procedure allowed minimizing roughness Ra, cutting forces and power consumption and maximizing material removal rate using desirability approach.

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Surface integrity when machining age hardened Inconel 718 with coated carbide cutting tools

Cited by 221 publications

References 12 publications

Influence of Machining Environment on Surface Integrity in HSM of Inconel 718 with Productivity Perspective

Influence of Machining Environment on Surface Integrity in HSM of Inconel 718 with Productivity Perspective

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

Multi-objective optimization of surface roughness, cutting forces, productivity and Power consumption when turning of Inconel 718

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