27/04/2012· This paper investigates the characteristics of a nanofluid MQL micro-grinding process through a series of experiments. The miniaturized desktop machine tool system is developed, and a small grinding wheel is used to effectively realize the nanofluid MQL microgrinding process. Nanodiamond and
The AF-ESL technique using nanofluid has been proposed for the micro-grinding process of titanium alloy in this research. Its basic concept was introduced in the previous work of the authors’ research group (Lee et al., 2015).As can be seen in Fig. 1 (a), this system uses the electrical force with high voltage (10 0 ∼ 10 4 V) to form droplets and appropriate air flow for cooling and chip
Micro/nanofluids are the recent alternative solutions for cooling lubrication that can be defined as the fluids containing microparticles or nanoparticles, which own superior lubrication and cooling characteristics. For these reasons, they have gained significant attention in industrial applications, such as automotive, machining, and biomedical industries.
4/08/2015· The objective of this study was to investigate the thermal characteristics of a micro-scale grinding process using nanofluid minimum quantity lubrication (MQL) with experimental and numerical analyses. In the experimental analysis, a series of micro-scale grinding experiments were conducted with the miniaturized machine tool system, and the sub
1/09/2015· Meanwhile, Lee et al. (2012) studied the nanofluid MQL micro-grinding process using nanodiamond (30–150 nm) and nano-Al 2 O 3 particles (30–150 nm) with the base fluid of paraffin oil. It was experimentally demonstrated that the nanofluid MQL was effective for reducing grinding forces and improving surface quality. In addition, it was found
This paper investigates the characteristics of a nanofluid MQL micro-grinding process through a series of experiments. The miniaturized desktop machine tool system is developed, and a small
This paper discusses the experimental characterization of the micro-drilling process with the nanofluid minimum quantity lubrication (MQL). The miniaturized drilling machine tool system is developed, and then a series of micro-drilling experiments are conducted in the cases of compressed air lubrication, pure MQL and nanofluid MQL.
PDF Micro/nanofluids are the recent alternative solutions for cooling lubrication that can be defied as the fluids containing microparticles or nanoparticles, which own superior lubrication and
In this paper, four manufacturing processes (grinding, turning, milling, and drilling) and the effect of using nanofluid MQL in them are studied and summarized. Parameters that are considered in
20/03/2018· The grinding tests were performed in three different conditions, namely, dry, with conventional grinding fluid (mixture of water and soap) and with nanofluid. The nanofluid used in this study was the mixture of water and copper nanoparticles with average diameter of 7 nm coated with silver layer. The silver coating protects the copper nanoparticles from oxidation in high temperatures. The
“An Experimental with Nanofluid Al2O3 0.5% could not provide the Study on Micro-Grinding Process with Nanofluid Minimum sufficient cooling lubrication. On the other hand, the Quantity Lubrication (MQL)”, International Journal of Precision Engineering and Manufacturing, 13, 331-338, 2012. productivity is about 9% higher than that of cutting
PDF Machining is one of the largest and most widely used methods of producing segments in industries. In this way, cutting fluids play an important role in minimizing production time, cost and
1/10/2019· The grinding of Si 3 N 4 ceramics is difficult due to their inherent hardness, brittleness, and machining-induced damages. The effects of environmentally friendly mono and hybrid nanofluids are investigated on grinding forces, specific grinding energy, grinding force ratio, surface integrity and surface/sub-surface damages during grinding of Si 3 N 4 ceramics.
11/01/2017· The objective of this research is to experimentally characterize the micro-end-milling process of titanium alloy (Ti-6Al-4V) using both nanofluid minimum quantity lubrication (MQL) and chilly gas. A series of micro-end-milling experiments are conducted by considering nanodiamond particles for nanofluid
A study on thermal characteristics of micro-scale grinding process using nanofluid minimum quantity lubrication (MQL) Robust design of using nanofluid/MQL in micro-drilling Heat transfer
Grinding is an indispensable form of machining, in which, a large amount of heat is transferred into workpiece surface, causing surface burn of the workpiece. Flood grinding is easy to cause pollution to the environment while dry grinding and minimum quantity lubrication (MQL) is insufficient of cooling and lubrication effect. The appearance of nanofluid minimum quantity lubrication cooling
In the experiments, specific micro-grinding forces and surface roughness of the ground workpiece are quantitatively analyzed as a function of nanofluid’s concentration and size of nanoparticles. In addition, the ground surface quality is qualitatively investigated by comparing the optical microscopic images. The experimental results show the
The use of vegetable oil-based nanofluids for minimum quantity lubrication hard machining has become a new research trend, proven to bring out very promising results and attained much attention to reduce the negative effects of using cutting fluids on the environment.
The nanofluid is usually applied in minimum quantity lubricant (MQL) grinding to decrease grinding temperature and to improve surface integrity of workpiece. However, a large challenge in the application process of nanofluid is the sedimentation of the nanoparticles due to their poor suspension stability in the base fluid. Then, the lubrication
In micro-grinding, the effects of crystallography on the grinding machinability become significant, since the depth of cut is of the same order as the grain size. In this research, the Taylor factor model for multi-phase materials is proposed to quantify the crystallographic orientation (CO) with respect to the cutting direction by examining
A nanofluid is a fluid containing nanometer-sized particles, called nanoparticles. These fluids are engineered colloidal suspensions of nanoparticles in a base fluid. The nanoparticles used in nanofluids are typically made of metals, oxides, carbides, or carbon nanotubes. Common base fluids include water, ethylene glycol and oil.
The experimental results show that nanofluid MQL is more effective for reducing cutting forces and surface roughness and tool wear led to increase tool life than pure MQL. In addition, it is demonstrated that the nanofluid of emulsion 5% coolant shows better tribological performances in hard milling compared to soybean oil–based nanofluid.
3/11/2011· FEM grinding model has been used to simulate energy partition in dry, plain emulsifier and emulsifier with 1% Al 2 O 3 nanofluid in grinding of EN-31 steel and we found decrease in energy partition and surface roughness with addition of Al 2 O 3 nanoparticles.
This paper evaluates the performances of dry, minimum quantity lubrication (MQL), and MQL with nanofluid conditions in turning of the most common titanium (Ti) alloy, Ti-6Al-4 V, in a solution treated and aged (STA) microstructure.
28/03/2018· 1. On the basis of theory of boiling heat transfer and conduction, a heat transfer coefficient model and a finite difference model under different grinding conditions were established, and the temperature field in the grinding zone under different cooling conditions was simulated.
MQL grinding processes with nanoparticle grinding of cast iron. They reported a reduction in grinding forces, improved surface roughness and lower grinding temperature with MQL nanoparticles lubricant. The effect of a nanofluid MQL during micro-grinding process of a tool steel material with a CBN 270 grinding
28/12/2017· Nanofluid MQL is the incorporation of especially engineered nanoparticles into the lubricant that increases the heat carrying capacity. In this paper, four manufacturing processes (grinding, turning, milling, and drilling) and the effect of using nanofluid MQL in them are studied and summarized. Parameters that are considered in this study are
Environmental and economic concerns on use of cutting fluids have led to use of minimum quantity cooling lubrication (MQCL) system, which uses minute quantity of cutting fluids, demanding a specialized fluid with improved properties.
The implementation of sustainable machining process can be accomplished by different strategies including process optimization and selection of the proper lubrication techniques and cutting conditions. The present study is carried out from the perspective of a sustainability assessment of turning Ti-6Al-4V by employing minimum quantity lubrication (MQL) and MQL-nanofluid with consideration of
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