“…As shown in Fig. 42 , Fernando et al [ 167 ] used coconut oil-based metal cutting fluids as MQL coolant in AISI 304 stainless steel turning. They determined that surface finish and tool wear were improved using coconut oil-based cutting fluid in comparison to standard emulsion mineral oil.…”
Section: Types Of Cutting Fluidsmentioning
confidence: 99%
“… Fig. 42 a , b Surface roughness performance of coconut oil MQL delivery on AISI 304 stainless steel turning [ 167 ] …”
This paper reviews recent progress and applications of usage of cutting fluids in conventional machining processes. In addition to reviewing the various conventional and advanced cooling techniques during machining, the paper also discusses the use of minimum quantity lubrication (MQL) in several types on metals such as steel, aluminum, alloy, and titanium alloys. Due to the toxicity of conventional cutting fluid resulting in ecological problems, the demand for environmentally friendly cutting fluid is rising. Therefore, natural vegetable oil is chosen as potential replacement as an environmentally friendly cutting fluid which fulfills the important aspects of biodegradability and sustainability. Application of vegetable oil-based cutting fluids under MQL techniques are also discussed. Moreover, the potential of palm oil as biodegradable and environmentally friendly natural vegetable oil-based metal-working fluids in MQL are reviewed.
“…As shown in Fig. 42 , Fernando et al [ 167 ] used coconut oil-based metal cutting fluids as MQL coolant in AISI 304 stainless steel turning. They determined that surface finish and tool wear were improved using coconut oil-based cutting fluid in comparison to standard emulsion mineral oil.…”
Section: Types Of Cutting Fluidsmentioning
confidence: 99%
“… Fig. 42 a , b Surface roughness performance of coconut oil MQL delivery on AISI 304 stainless steel turning [ 167 ] …”
This paper reviews recent progress and applications of usage of cutting fluids in conventional machining processes. In addition to reviewing the various conventional and advanced cooling techniques during machining, the paper also discusses the use of minimum quantity lubrication (MQL) in several types on metals such as steel, aluminum, alloy, and titanium alloys. Due to the toxicity of conventional cutting fluid resulting in ecological problems, the demand for environmentally friendly cutting fluid is rising. Therefore, natural vegetable oil is chosen as potential replacement as an environmentally friendly cutting fluid which fulfills the important aspects of biodegradability and sustainability. Application of vegetable oil-based cutting fluids under MQL techniques are also discussed. Moreover, the potential of palm oil as biodegradable and environmentally friendly natural vegetable oil-based metal-working fluids in MQL are reviewed.
“…Coconut oil is considered one of the highly saturated medium-chain triglycerides group of vegetable oil that possess high oxidative resistance, low thermal degradation, and very high flash point making it more suitable for machining. It is also a valuable natural resource and is available abundantly at a low cost compared to the available metalworking fluids [33][34][35].…”
Inconel 625 is a solid-solution strengthened nickel-based superalloy that found widespread usage in aerospace, marine, and nuclear applications due to its outstanding mechanical properties. Thus in the current study, the machining performance of Inconel 625 under nano-minimum quantity lubrication (nMQL) environment is investigated. Graphene nanoparticles were selected to enrich the physicochemical properties of coconut oil as a cutting fluid. Experiments were conducted using AlTiN PVD coated carbide cutting tool inserts under stable nano-cutting fluids of various concentrations and at different levels of cutting speed, feed, and depth of cut. The experiments were conducted according to Taguchi's L 16 orthogonal design. Surface roughness, tool flank wear, and material removal rate were selected as responses to study the effects of cooling conditions and machining parameters. The turning process performance was optimized by the grey relational multi-objective optimization method. Cutting speed of 80 m/min, feed of 0.05 mm/rev, depth of cut of 0.8 mm, and cooling condition with 0.50 wt. % graphene nanofluid MQL was established as the optimal machining conditions. Analysis of variance (ANOVA) was performed to identify the importance of input parameters on machining performance and the results indicate that feed and cooling conditions are the most influential parameters. Also, the tool wear mechanisms and chip morphology were identified and analyzed using SEM and EDS to understand the cutting tool performance under each cooling condition by considering the optimal machining parameters. The lesser tool wear and better chip morphology were obtained under 0.50 wt. % graphene nano-cutting fluid environment.
“…Addition of halogen-free IL as an additive in water abridged the coefficient of friction by greater than 70% when matched to water, and attributed a trifling wear rate of aluminium [17]. According to Sani et al [18], machining of AISI 1045 steel under modified Jatropha oil with 10 % ammonium imide IL attributed a significant reduction in surface roughness (7%), cutting temperature (9%) and cutting force (12%) while 50% tool life improved compared to conventional synthetic ester MQL fluid. Gutnichenko et al [19] utilised graphite nano-additives rapeseed vegetable oil through MQL in hard turning of 60 HRC tempered steel.…”
The current research presents an overall performance-based analysis of Trihexyltetradecylphosphonium Chloride [[CH3(CH2)5]P(Cl)(CH2)13CH3] ionic fluid mixed with organic coconut oil (OCO) during turning of hardened D2 steel. The application of cutting fluid on the cutting interface was performed through Minimum Quantity Lubrication (MQL) approach keeping an eye on the detrimental consequences of conventional flood cooling. PVD coated (TiN/TiCN/TiN) cermet tool was employed in the current experimental work. Taguchi’s L9 orthogonal array and TOPSIS are executed to analysis the influences, significance and optimum parameter settings for predefined process parameters. The prime objective of the current work is to analyze the influence of OCO based Trihexyltetradecylphosphonium Chloride ionic fluid on flank wear, surface roughness, material removal rate, and chip morphology. Better quality of finish (Ra = 0.2 to 1.82 µm) was found with 1% weight fraction but it is not sufficient to control the wear growth. Abrasion, chipping, groove wear, and catastrophic tool tip breakage are recognized as foremost tool failure mechanisms. The significance of responses have been studied with the help of probability plots, main effect plots, contour plots, and surface plots and the correlation between the input and output parameters have been analyzed using regression model. Feed rate and depth of cut are equally influenced (48.98%) the surface finish while cutting speed attributed the strongest influence (90.1%). The material removal rate is strongly prejudiced by cutting speed (69.39 %) followed by feed rate (28.94%) whereas chip reduction coefficient is strongly influenced through the depth of cut (63.4%) succeeded by feed (28.8%). TOPSIS significantly optimized the responses with 67.1 % gain in closeness coefficient.
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