High-speed milling of Ti6Al4V under a supercritical CO2 + MQL hybrid cooling system

Khosravi, Jahangir; Azarhoushang, Bahman; Barmouz, Mohsen; Bösinger, Robert; Zahedi, Ali

doi:10.1016/j.jmapro.2022.07.061

Cited by 25 publications

(4 citation statements)

References 26 publications

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“…Khosravi et al [304] investigated the effects of supercritical CO 2 cooling (Sc-CO 2 ) on the high-speed milling of Ti-6Al-4V with an Sc-CO 2 + MQL delivery system. The side milling experiments under Sc-CO 2 + MQL and flood cooling are shown in figure 55(a).…”

Section: Minimum Quantity Lubrication-assisted Millingmentioning

confidence: 99%

Nontraditional energy-assisted mechanical machining of difficult-to-cut materials and components in aerospace community: a comparative analysis

Zhao,

Ding

et al. 2024

Int. J. Extrem. Manuf.

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Difficult-to-cut materials such as titanium alloys, high-temperature alloys, metal/ceramic/polymer-matrix composites, hard and brittle materials, as well as geometrically complex components such as thin-walled structures, micro channels and complex surfaces, are widely used in aerospace community. Mechanical machining is the main material removal process and responsible for the vast majority of material removal for aerospace components. Nevertheless, it encounters many problems in terms of severe and rapid tool wear, low machining efficiency, and deteriorated surface integrity. Nontraditional energy-assisted mechanical machining is a hybrid process in which nontraditional energies, e.g., vibration, laser, electric, etc., are applied to improve the machinability of local material and decrease burden of mechanical machining. It provides a feasible and promising way for improving machinability and surface quality, reducing process forces, and prolonging tool life, etc. However, systematic reviews of this technology are lacking with respect to the current research status and development direction. This paper reviews recent progress in nontraditional energy-assisted mechanical machining of difficult-to-cut materials and components in aerospace community. It focuses on the processing principles, material responses under nontraditional energy, resultant forces and temperatures, material removal mechanisms and applications of these processes including vibration-, laser-, electric-, magnetic-, chemical-, cryogenic cooling-, and hybrid nontraditional energies-assisted mechanical machining. Eventually, a comprehensive summary of the principles, advantages and limitations for each hybrid process is provided, and future perspectives on forward design, device development and sustainability of nontraditional energy-assisted mechanical machining processes are discussed.

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Section: Minimum Quantity Lubrication-assisted Millingmentioning

confidence: 99%

Nontraditional energy-assisted mechanical machining of difficult-to-cut materials and components in aerospace community: a comparative analysis

Zhao,

Ding

et al. 2024

Int. J. Extrem. Manuf.

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“…Four key parameters were chosen: cutting speed, feed/tooth, MQL flow rate, and nano-fluid concentration. These parameters were selected based on our preliminary trials and literature review [29,30]. These parameters have a significant impact on machining efficiency and surface quality.…”

Section: Milling Experimentsmentioning

confidence: 99%

Enhancing high-speed CNC milling performance of Ti6Al4V alloy through the application of ZnO-Ag hybrid nanofluids

Asalekar,

Rama Sastry

2024

Eng. Res. Express

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This research investigates the performance of high-speed CNC milling operations on Ti6Al4V alloy by employing a novel ZnO-Ag hybrid nanofluid. The study involves the preparation and characterization of nanofluids with varying concentrations of nanoparticles, focusing on thermal conductivity and stability. The machining experiments encompass four critical input parameters: Minimum Quantity Lubrication (MQL) flow rate, cutting speed, nanofluid concentration, and feed rate. Performance evaluation is based on average surface roughness (Ra) and cutting temperature. Key findings include a remarkable 21.05% improvement in thermal conductivity for the ZnO-Ag-based sunflower oil at 0.2% volume concentration compared to 0.05% concentration. The prepared nanofluids exhibit good stability. Moreover, cutting speed and MQL flow rate emerge as significant contributors to Ra, accounting for 35.62% and 34.82%, respectively. Interestingly, MQL flow rate is identified as the most influential factor, surpassing even cutting speed. SEM images for tool wear reveals that the ZnO-Ag based sunflower oil reduced tool wear significantly. In conclusion, the proposed ZnO-Ag-based sunflower oil at 0.2% concentration emerges as the good option for sustainable high-speed machining of Ti6Al4V alloy, showcasing

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“…A novel "sub-zero" cooling supercritical CO2 (Sc-CO2) method uses CO2 at Tc and Pc > 31.1 o C and 73.8 bar, respectively and is considered a green cooling technology [87]. The challenges of the biomedical implant industry (bone screws and knee joints) are cooling during the machining of nickel and titanium alloys, respectively.…”

Section: Coolant Modificationmentioning

confidence: 99%

A Review of Parameters and Mechanisms in Spray Cooling

Thakur,

Kadapure,

Hegde

et al. 2023

Metall Mater Eng

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Miniaturisation in avionics, electronics, and medical appliances has led to demands for rapid heat dissipation techniques. The spray cooling technique has gained importance recently due to its advantage over other cooling methods. Parameters affecting heat transfer mechanisms during spray cooling are contemplated. This review presents different heat transfer parameters and their effect on spray cooling by analysis from past studies. Heat transfer surface modifications and different coolant variations to enhance heat transfer effectiveness are also reviewed. Apart from high heat flux having more applications, low heat flux studies have also grabbed the researchers to find solutions with a temperature range lower than 250˚C. Therefore, the upcoming spray cooling technology will have broad applications that will contribute to the maximum efficiency of the heat removal rate.

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High-speed milling of Ti6Al4V under a supercritical CO2 + MQL hybrid cooling system

Cited by 25 publications

References 26 publications

Nontraditional energy-assisted mechanical machining of difficult-to-cut materials and components in aerospace community: a comparative analysis

Nontraditional energy-assisted mechanical machining of difficult-to-cut materials and components in aerospace community: a comparative analysis

Enhancing high-speed CNC milling performance of Ti6Al4V alloy through the application of ZnO-Ag hybrid nanofluids

A Review of Parameters and Mechanisms in Spray Cooling

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