“…They review that the application of nano cutting fluid during MQL milling reveals a remarkable reduction in cutting force, cutting temperature, specific energy requirements, lubricant consumption, and tool wear and the improvement in surface quality. NAC Sidik et al 26 newly made a review of recent progress on the application of nanoparticles in lubricants especially for MQL technique in machining processes. The authors concluded that nanofluid MQL exhibited better tribological and thermophysical properties.…”
In this article, an attempt has been made to explore the potential performance of Al 2 O 3 nanoparticle-based cutting fluid in hard milling of hardened 60Si 2 Mn steel (50-52 HRC) under different minimum quantity lubrication conditions. The comparison of hard milling under minimum quantity lubrication conditions is done between pure cutting fluids and nanofluids (in terms of surface roughness, cutting force, tool wear, and tool life). Hard milling under minimum quantity lubrication conditions with nanofluid Al 2 O 3 of 0.5% volume has shown superior results. The improvement in tool life almost 177%-230% (depending on the type of nanofluid) and the reduction in surface roughness and cutting forces almost 35%-60% have been observed under minimum quantity lubrication with Al 2 O 3 nanofluids due to better tribological behavior as well as cooling and lubricating effects. The most outstanding result is that the uncoated cemented carbide insert can be effectively used in machining high-hardness steels (.50 HRC) while maintaining long tool life and good surface integrity (R a = 0.08-0.35 mm; R z = 0.5-2.0 mm, equivalent to finish grinding) rather than using the costlier tools like coated carbide, ceramic, and (P)CBN. Therefore, using hard nanoparticle-reinforced cutting fluid under minimum quantity lubrication conditions in practical manufacturing becomes very promising.
“…They review that the application of nano cutting fluid during MQL milling reveals a remarkable reduction in cutting force, cutting temperature, specific energy requirements, lubricant consumption, and tool wear and the improvement in surface quality. NAC Sidik et al 26 newly made a review of recent progress on the application of nanoparticles in lubricants especially for MQL technique in machining processes. The authors concluded that nanofluid MQL exhibited better tribological and thermophysical properties.…”
In this article, an attempt has been made to explore the potential performance of Al 2 O 3 nanoparticle-based cutting fluid in hard milling of hardened 60Si 2 Mn steel (50-52 HRC) under different minimum quantity lubrication conditions. The comparison of hard milling under minimum quantity lubrication conditions is done between pure cutting fluids and nanofluids (in terms of surface roughness, cutting force, tool wear, and tool life). Hard milling under minimum quantity lubrication conditions with nanofluid Al 2 O 3 of 0.5% volume has shown superior results. The improvement in tool life almost 177%-230% (depending on the type of nanofluid) and the reduction in surface roughness and cutting forces almost 35%-60% have been observed under minimum quantity lubrication with Al 2 O 3 nanofluids due to better tribological behavior as well as cooling and lubricating effects. The most outstanding result is that the uncoated cemented carbide insert can be effectively used in machining high-hardness steels (.50 HRC) while maintaining long tool life and good surface integrity (R a = 0.08-0.35 mm; R z = 0.5-2.0 mm, equivalent to finish grinding) rather than using the costlier tools like coated carbide, ceramic, and (P)CBN. Therefore, using hard nanoparticle-reinforced cutting fluid under minimum quantity lubrication conditions in practical manufacturing becomes very promising.
“…In Figs. 4, 5,6,7,8,9,10,11,12,13,14,15,16,17, the entropy generation profile and Bejan number profiles are shown graphically. The dotted lines denote the case of heat absorption, while the solid lines denote heat generation case.…”
Section: Resultsmentioning
confidence: 99%
“…Application of nanofluid in real-life processes is still in its infancy though many applications have been tested including solar collectors, boiling processes, machining processes, heat exchangers, microelectromechanical systems (MEMS), refrigerators, etc. [2][3][4][5][6][7][8][9][10][11][12][13][14][15] The magnetohydrodynamic (MHD) effect is an important effect that acts on nanofluid flow. Fakour et al [16] found that with the increment of magnetic field effects, the maximum velocity and temperature decreased in the horizontal porous canal flow.…”
This work investigates the generation of entropy in the presence of a heat source/sink in a sloping channel filled with porous medium in magnetohydrodynamic nanofluid flow. The regulating equations are nonlinear and coupled thermal and hydrodynamic equations. Homotopy analysis method is used in the handling of equations. Comparisons with existing literature have been produced and were discovered to be in excellent accord, which are a particular situation of the present issue. The impact on entropy generation, Bejan number, Nusselt number and skin friction of pertinent fluid parameters is addressed, developed and displayed graphically. Entropy generation was found to be minimum just above the center of the channel throughout the study. Skin friction and Nusselt number were found to be higher for the case of heat generation than heat absorption.
“…Simultaneously, both workpiece and tool realize advanced thermal load and results in high abrasion, diffusion as well as oxidation. In addition, no use of cutting fluids is counter-effective in the cleaning of chips from the machining zone, and it may cause wear and tear [42,43]. In the recent past, the solid lubricants were also utilized by few researchers for lubrication and cooling purposes [44][45][46].…”
Section: Performance Of Vegetable Oils In Mql Assisted Machiningmentioning
In modern days, the conception of sustainability has progressively advanced and has begun receiving global interest. Thus, sustainability is an imperative idea in modern research. Considering the recent trend, this review paper presents a summary of the previously published research articles on minimum quantity lubrication (MQL) assisted machining. The requirement to stir towards sustainability motivated the researchers to revise the effects of substitute lubrication methods on the machining. Conventional lubri-cooling agents are still extensively employed when machining of engineering alloys, but the majority of the recent papers have depicted that the utilization of vegetable oil, nanofluids, and nanoplatelets in MQL system confers superior machining performances as compared to conventional lubrication technology. In actual, the definite principle of this manuscript is to reexamine modern advancements in the MQL technique and also explore the benefits of the vegetable oil and nanofluid as a lubricant. In brief, this paper is a testimony to the advancing capabilities of eco-friendly MQL technique which is a viable alternative to the flood lubrication technology, and the outcomes of this review work can be contemplated as a movement towards sustainable machining.
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