Effectiveness of vegetable oil based nanofluids as potential cutting fluids in turning AISI 1040 steel

Padmini, R.; Krishna, P. Radha; Rao, G Sudhakara

doi:10.1016/j.triboint.2015.10.006

Cited by 242 publications

(80 citation statements)

References 30 publications

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“…Saravana Kumar et al, [7] investigated the performance of the cutting fluid after dispersion of 0.1 wt % of MWCNTs in coconut oil. Various other scientists such as Amrita et al, [8], Padmini et al, [9] have also reported encouraging results of improvement in the machining parameters on application of nano cutting fluids prepared by dispersion of different types of nanoparticles. Most of the previous studies involving dispersion of nanoparticles into the conventional cutting fluids deals with the evaluation of machining parameters that govern the machining process such as the cutting temperature, cutting forces, tool wear and the surface temperature.…”

Section: Introductionmentioning

confidence: 91%

Optimization of Machining Parameters of Milling Operation by Application of Semi-synthetic oil based Nano cutting Fluids

Prasad¹,

Raaj²,

Kumar³

et al. 2016

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract.The present study is concerned with resolving the problems pertaining to the conventional cutting fluids. Two samples of nano cutting fluids were prepared by dispersing 0.01 vol% of MWCNTs and a mixture of 0.01 vol% of MWCNTs and 0.01 vol% of nano ZnO in the soluble oil. The thermophysical properties such as the kinematic viscosity, density, flash point and the tribological properties of the prepared nano cutting fluid samples were experimentally investigated and were compared with those of plain soluble oil. In addition to this, a milling process was carried by varying the process parameters and by application of different samples of cutting fluids and an attempt was made to determine optimal cutting condition using the Taguchi optimization technique. IntroductionMachining is often accompanied by a large amount of frictional heat at the tool, work and chip interfaces. This in turn affects the machining parameters such as the cutting force, tool wear and the surface roughness. In order to control these parameters, cutting fluids are employed in metal working processes. Effective cooling and lubrication are the most desirable properties of any cutting fluid. A study by few American institutes stated that 60% of companies spend more than 20% of their total expenses on coolants/lubricants in metal cutting operations [1]. Cutting fluids are categorized into various groups based on their derivatives, the commonly used cutting fluids being mineral oil or petroleum oil, oil-water emulsions, pastes, gels and aerosols. Straight oils are undiluted mineral or petroleum oils. They provide excellent lubrication effect between the tool and the work piece which makes them the fluid of choice for most of the honing operations and several machining processes. But the initial cost of these type of cutting fluids are high, making them unsuitable for most of the operations. Despite their high cost, the straight oil cutting fluids also possess poor heat transfer properties. Soluble oil fluids are stable emulsions of the mineral oil and water with a low oil concentration. These are least expensive and are the most commonly used because of their considerably good lubrication and heat transfer properties. However, since these types of fluids are in a highly diluted form, they tend to lose their properties with time and needs to be continuously replaced. Therefore, there exists a need to improve their properties and sustain them in order to cope up with the severity and complexity of the modern machining operations. Recently many studies have marked a massive improvement in the heat transfer and tribological properties of the base fluids on dispersion of nanoparticles. Nanofluids are stable dispersions of nanoparticles into a base fluid. The commonly used base fluids are water, oil and ethylene glycol. These nanofluids are experimentally found to possess better tribological, thermophysical, optical and electrical properties compared to their parent base fluid. Choi et al., [2] showed an enhancement of 10% in the thermal conduct...

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Section: Introductionmentioning

confidence: 91%

Optimization of Machining Parameters of Milling Operation by Application of Semi-synthetic oil based Nano cutting Fluids

Prasad¹,

Raaj²,

Kumar³

et al. 2016

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Additionally, the study of the lubricity of different vegetable oils suggests that a small concentration of vegetable oil (1%-5% content) in a VO/W emulsion [6] has comparable lubricity to conventional oil based lubricants [15][16][17]. This makes vegetable oil in water emulsion a cost effective green and renewable lubricant with low oil consumption, in accordance with the minimum quantity lubricant MQL strategy [18,19]. Aqueous triblock copolymer solutions are another class of low cost aqueous alternatives, possessing comparable tribological performance to conventional lubricants and excellent surface cleanability [8,20,21].…”

Section: Introductionmentioning

confidence: 94%

Surface Film Adsorption and Lubricity of Soybean Oil In-Water Emulsion and Triblock Copolymer Aqueous Solution: A Comparative Study

2016

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This paper investigates the surface film adsorption and lubricity of two different types of potential environmentally friendly cold metal forming lubricants: soybean vegetable oil in water VO/W emulsions and triblock copolymer aqueous solutions. The lubricants have different visual appearance, surface film adsorption characteristic, lubricity and surface cleaning behaviour. The effects of concentration, temperature and emulsification ultrasonic energy (for VO/W emulsion) are studied. The result shows that the soybean VO/W emulsions have stronger adsorption, superior lubricity and anti-wear property compared to the copolymer solutions. The effect of temperature is investigated at 30 • C and 65 • C which are below and above cloud point of the aqueous copolymer solutions. Both lubricants show improved friction and anti-wear property at 65 • C. However, tenacious residual film remained on the discs surface after surface cleaning indicates lower cleanability of the soybean VO/W emulsions compared to the copolymer solutions, postulating the need for extra post-processing cleaning operations after cold forming process with VO/W emulsion lubricant.

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“…36 Infact, vegetable oils like coconut oil, sesame oil and canola oil were also found to be effective in reducing the surface roughness and tool wear as compared with conventional CF and dry cutting when microlubrication machining of AISI 1040 steel. 37 In a different study, conducted on atomization machining AISI 1018 steel and Al 6061, reduction in peak-to-valley values of the resultant cutting force, thinner chip thickness and fewer burrs was achieved with the use of the canola oil-based MWF compared with the conventional MWF. 38 One study analysed the effects of sunflower oil-based and canola oil-based MWF while machining AISI 304 L steel.…”

Section: Cross-sectional Hardness Analysis At Failurementioning

confidence: 99%

Microlubrication machining of 1018 steel: the effect of a biodegradable lubricant on the microstructural integrity

Shaikh¹,

Scharf

Boubekri

2017

Lubrication Science

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Microlubrication is a green machining technique that reduces the amount of cutting fluid during the machining process. Its effect on subsurface microstructural integrity is a very important aspect for the functionality of a machined component, but it is often neglected and requires advanced characterisation techniques. The focus of this study is to investigate the influence of microlubrication using a biodegradable vegetable oil‐based cutting fluid to characterise the subsurface microstructural integrity during end milling of AISI 1018 steel. Vickers microhardness was measured along the cross section of the machined component from the surface edge to inside the bulk, while transmission electron microscopy was conducted inside the subsurface deformation zone to quantify the dislocation densities. It was determined that increased dislocation densities near the workpiece edge resulted in increased microhardness with reduced tool wear. Thus, microlubrication machining is a sustainable green machining process that does not significantly compromise the subsurface integrity of the workpiece material. Copyright © 2017 John Wiley & Sons, Ltd.

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Effectiveness of vegetable oil based nanofluids as potential cutting fluids in turning AISI 1040 steel

Cited by 242 publications

References 30 publications

Optimization of Machining Parameters of Milling Operation by Application of Semi-synthetic oil based Nano cutting Fluids

Optimization of Machining Parameters of Milling Operation by Application of Semi-synthetic oil based Nano cutting Fluids

Surface Film Adsorption and Lubricity of Soybean Oil In-Water Emulsion and Triblock Copolymer Aqueous Solution: A Comparative Study

Microlubrication machining of 1018 steel: the effect of a biodegradable lubricant on the microstructural integrity

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