Modeling and Simulation of Nanofluid Minimum Quantity Lubrication
Surface Grinding Thermal Stress

Li, Changhe; Yang, Min; Jia, Dongzhou; Zhang, Dongkun; Zhang, Xiaowei

doi:10.2174/1874155x01509010761

Cited by 3 publications

(2 citation statements)

References 45 publications

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“…The corona-type charge electrostatic atomization device is mainly used in existing applications. Currently, improvements made to the EMQL device are mainly focused on enhancing the structure of the charge nozzle [93,[113][114][115][116][117][118][119][120][121]. As shown in figures 5(i)-(v), the corona charging system is equipped with a corona discharge electrode at the nozzle, and when the electrode voltage exceeds a certain threshold, a corona discharge is generated around it [122,123].…”

Section: Equipment and Principlesmentioning

confidence: 99%

Electrostatic atomization minimum quantity lubrication machining: from mechanism to application

Zhang

et al. 2022

Int. J. Extrem. Manuf.

170

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Metal cutting fluids in flood condition does not meet the urgent needs of emission cutting and carbon reduction, minimum quantity lubrication (MQL) is an effective alternative to flood lubrication. Nevertheless, the micro-droplets produced by pneumatic atomization MQL have poor infiltration and wetting properties, which cannot fully exert the film-forming and heat transfer performance of lubricant. The unique empowering mechanism of electrostatic atomization can not only solve the above technical bottleneck, but also realize parametric control of the droplets. Previously, the improvement of tool wear and surface integrity of electrostatic atomization have been preliminarily verified by experimental studies. However, the application principle of electrostatic atomization in the manufacturing process is ambiguous, which limits its further development and industrial application. Especially the in-depth understanding of the action mechanism of the high temperature and high pressure contact interface is difficult and meaningful. More importantly, electrostatic atomization-assisted MQL machining has not been systematically reviewed. In this review, firstly, an analysis of the critical devices, common media (nano-biolubricants) and empowering mechanisms is presented. Subsequently, the excellent machining performance of nano-biolubricants was quantitatively evaluated by comparing with flood, revealing its advanced lubrication and heat transfer mechanism. Furtherly, the excellent machining performance was assessed based on the enhanced penetration, infiltration and film formation properties of electrostatic atomization, with a 42.4% reduction in tool wear and a 47% improvement in machined surface Ra compared to pneumatic atomization. Finally, the limitations of current electrostatic atomization and green lubrication technologies are analyzed and the future trends (e.g. new processes and multi-process coupling) are foreseen. The aim of this paper is to provide a comprehensive review and critical assessment of the existing understanding, which can be used by scientists to gain insight into the mechanism of action, the theoretical basis, machining performance and development direction of new electrostatic atomization processes.

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Section: Equipment and Principlesmentioning

confidence: 99%

Electrostatic atomization minimum quantity lubrication machining: from mechanism to application

Zhang

et al. 2022

Int. J. Extrem. Manuf.

170

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“…This method utilizes no lubrication to machine parts [10]. However, dry machining can negatively affect machining characteristics and material properties such as precision, and material failure becomes a concern for the operator when machining dry [11].…”

Section: Introductionmentioning

confidence: 99%

Study on High-Speed Machining of 2219 Aluminum Utilizing Nanoparticle-Enhanced Minimum Quantity Lubrication (MQL) Technique

James

Mazaheri²

2022

Preprint

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The lubricant choice is a critical factor in the high-speed machining process, and it can impact the machining surface quality and also the ultimate material properties. This paper investigates the microstructural surface finishing and heat generated during the high-speed cutting process (machining speed 3800 RPM) of 2219 aluminum alloy. The study examines flood coolant and five different nanofluids made by synthesizing 0.2–2% concentration of Al2O3 nanoparticles into ultra-food-grade mineral oil utilizing nanoparticle-enhanced minimum quantity lubrication (MQL) technique. In the MQL method, unlike the current known cooling fluid systems, the nanofluid provides a thin lubricant film that leads the heat created by friction to be transmitted to the chips and exits the interface. Also, the small amount of lubricant used for MQL makes this technique more environmentally friendly. The study revealed the chemistry between the MQL of choice and the corresponding surface finishing. As a result, the nanofluid with a 0.5% concentration of nanoparticles has the most optimal machining result. Furthermore, increasing nanoparticle concentration does not indicate any further improvement in the result. The results of this study could be instrumental to developing environmental-friendly machining solutions for aluminum alloys at commercial scales.

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Modeling and Simulation of the Surface Topography Generation With Ordinary Grinding Wheel

2020

Enhanced Heat Transfer Mechanism of Nanofluid MQL Cooling Grinding

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In order to simulate the surface grinding process of the common grinding wheel and evaluate the surface topography of the workpiece, the mathematical model of the common grinding wheel is established by using the abrasive vibration method to realize the parameterization of the simulated grinding wheel. The grinding wheel body with random arrangement of abrasive grains is generated, and the simulation of common grinding wheel morphology is completed. Then, according to the grinding kinematics model, elastic deformation model and plastic accumulation model, the simulation of the process is realized, and the workpiece surface morphology matrix is generated. Finally, the influence of grinding parameters and grinding wheel parameters on the workpiece surface morphology and surface roughness is studied by calculating the surface roughness value.

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Modeling and Simulation of Nanofluid Minimum Quantity Lubrication Surface Grinding Thermal Stress

Cited by 3 publications

References 45 publications

Electrostatic atomization minimum quantity lubrication machining: from mechanism to application

Electrostatic atomization minimum quantity lubrication machining: from mechanism to application

Study on High-Speed Machining of 2219 Aluminum Utilizing Nanoparticle-Enhanced Minimum Quantity Lubrication (MQL) Technique

Modeling and Simulation of the Surface Topography Generation With Ordinary Grinding Wheel

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