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Munkhbayar et al. compared the dry and wet grinding conditions at various rotation speeds (200–500 RPM) of a planetary ball mill regarding the dispersion …
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The application of micro-mechanical cutting operations, such as micro-drilling, is crucial for producing microsystem components. In the production of jet engine parts, Inconel 718 superalloy has been used to produce these components due to its high performance at high temperatures. Due to the low thermal conductivity and the high …
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micro-end-milling experiments are conducted by consid-ering nanodiamond particles for nanofluid MQL. In the case of chilly gas cooling, the chilly CO ... Fig. 2 Measured coefficients of friction of ND nanofluid from a ball-on-disc test (ty i uctiv d on C hermalTmW/mK) Temperature Fig. 3 Measured thermal conductivity values of ND …
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Section snippets Experimental setup. Experiments of micro-milling Al-Li alloy 2195-T8 were carried out on a three-coordinate CNC micro-milling machine, where the micro-milling spindle (EMSF-3060 K, NAKANISHI, Japan) had a 30 mm diameter and a 60,000 rpm maximum speed, an accuracy of within 1 µm, and a maximum output power …
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In order to enhance solar thermal conversion and thermal conductivity of water, Xuan et al. developed a CNT-SiO 2 /Ag nanoparticle filled nanofluid using a two-step preparation method (Fig. 1 d–h) [39].SiO 2 /Ag used in this work was fabricated through an in-situ chemical reduction way by using Sn 2+ as a reduction reagent. Owing …
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The micron size silica is reduced to nano size by ball milling, ... The milling was carried out at in wet medium like toluene, for the desired period of time like 5, 10, 15 and 20 h. ... Milling hours vs. viscosity of prepare SiO2 micro/nanofluid; (d) Milling hours vs. conductivity of prepared SiO2 micro/nanofluid; (e) Milling hours vs. zeta ...
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This article provides an overview of micro-milling operation with a focus on cutting fluids and reviews and discusses dry machining, flood, cryogenic cooling, usage of minimum quantity lubrication (MQL) approach, nanoparticle suspensions, and vegetable oils. In conclusion, the article highlights the future trends and research gaps in field of …
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Highlights Acid oxidation process was applied on raw MWCNT to remove the impurities. Raw and purified structure of MWCNTs were investigated and characterized. Wet grinding method is effective method to adjust the length of nanotubes. Dispersibility and thermal conductivity of nanofluid was increased with increasing the grinding …
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DOI: 10.1016/j.jmapro.2021.11.030 Corpus ID: 244697636; Performance evaluation of tool coatings and nanofluid MQL on the micro-machinability of Ti-6Al-4V @article{Roushan2022PerformanceEO, title={Performance evaluation of tool coatings and nanofluid MQL on the micro-machinability of Ti-6Al-4V}, author={Ashutosh Roushan …
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The current paper presents a new approach of attaining the optimum grinding condition of a planetary ball mill and simple method for purifying multi-walled carbon …
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To rationalize the design of parameters for the micro-milling experiments, we studied the instructions for using the tool and previous relevant studies (Saha et al., 2021; Khan et al., 2020).Overall, the spindle speeds for micro-milling experiments of TC4 alloys are mainly between 15,000 rpm and 45,000 rpm, and feed rates and milling …
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The effect of nanofluid-MQL related parameters (nozzle distance, volume concentration of nanofluid and air pressure) on the micro-drilling of 7075-T6 aluminium alloy with a micro-drill tool (DIXI ...
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The application of micro-mechanical cutting operations, such as micro-drilling, is crucial for producing microsystem components. In the production of jet engine parts, Inconel 718 superalloy has ...
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Application of nanofluid enhances lubricant properties which leads to a high wettability and enables the lubrication process of the cutting zone much better while …
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To enhance the hydrothermal performances of conventional mini-channel heat sinks, this paper experimentally and numerically investigates the impacts of channel convergence α on the pressure drop (ΔP), the maximum temperature (T max), the convective heat transfer coefficient (h s), and the coefficient of performance (COP) of a …
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A multilevel fuzzy comprehensive evaluation approach based on multi-objective decision theory is used to assess tool cutting performance during the machining of titanium alloy. This includes an exponential scale of AHP weights for each index. We studied two different kinds of cutting tools, one with an applied micro-texture and …
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This study investigates the effect of using ethanol as the process control agent during the wet ball milling of niobium (Nb).
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Nanofluids provide an excellent media in cutting zone for enhancing the thermal conductivity and tribological characteristics. Therefore, they help to enhance the …
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To prepare stable nanofluids, the ball milling was performed using different ball sizes (1 mm balls for 30 min and 3 mm balls for 1 h). Almasy et al. 177 prepared a …
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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.
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In this regard, this study aims to analyze the tribological behavior and micro machinability under nanofluid-based MQL in the micro-milling of Ti6Al4V using TiAlN …
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2.1 Experimental workpiece. The experimental material employed in this study is a 2.5D braided SiC f /SiC ceramic matrix composite. The SiC f /SiC composites were examined using a VHX-2000C 3D microscope with super depth-of-field capability. Figure 1 displays the braided structure and surface morphology. As depicted in the …
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According to Celis et al. [30], the spherical size nano additive in vegetable oil-based MQL improved surface finish, the topography of micro-needles, and reduced tool wear of micro ball end-mill. Shabgard et al. [31] utilized CuO and graphite nanoparticles to improve the grinding performance of AISI 1045 steel.
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Park et al. [12] used an xGnP-enhanced lubricant for a ball-milling test. xGnP is a commercially available additive, which contains nanographene. They found that xGnP could enhance the wetting area and wetting angle of MQL droplets and reduce wear. ... In this paper, the characteristics of the nanofluid MQL micro-drilling process using nano ...
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Performance evaluation of tool coatings and nanofluid MQL on the micro-machinability of Ti-6Al-4V. Journal of Manufacturing Processes, 73 (2022), pp. 595-610. View PDF View article View in Scopus ... Cutting force prediction for five-axis ball-end milling considering cutter vibrations and run-out. International Journal of Mechanical …
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Huang WT, Wu DH, Chen JT (2016) Robust design of using nanofluid/MQL in micro-drilling. Int J Adv Manuf Technol 85(9):2155–2161. Article Google Scholar Nam JS, Lee PH, Lee SW (2011) Experimental characterization of micro-drilling process using nanofluid minimum quantity lubrication. Int J Mach Tools Manuf 51(7-8):649–652
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In this paper, an analytical model for estimating the micro-ball-end milling forces is presented based on experimental investigation of progressive tool flank wear. The wear form and wear mechanism of the micro-ball-end mill are revealed through a series of micro-ball-end milling experiments. The effecting laws of cutting parameters such as …
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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.
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In the case of a nanofluid MQL milling process, Park et al., 2010, Park et al., 2011 conducted the research on the nanofluid ball-milling process using a xGnP lubricant which is a commercially available additive containing nanographene particles (thickness-15 nm). They discovered that the enhanced wetting area and angle of MQL …
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The average nanoparticle size was in the range of 24.1–27.2 nm and good stability was confirmed from the measured values of absolute zeta potential. Nine prepared well-dispersed Cu/Cu 2 O-water nanofluid using low energy ball milling in aqueous solution by varying the ball size and milling period. Samples that have been ground for 30 min by 1 ...
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