Yazar "Song, Qinghua" seçeneğine göre listele

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    A review on conventional and advanced minimum quantity lubrication approaches on performance measures of grinding process
    (Springer London Ltd, 2021) Gupta, Munish Kumar; Khan, Aqib Mashood; Song, Qinghua; Liu, Zhanqiang; Khalid, Qazi Salman; Jamil, Muhammad; Kuntoglu, Mustafa
    Grinding is one of the important machining processes that are widely applied in precision manufacturing. In the beginning, studies mostly focused on dry machining. In time, emerging technologies have led to change in the development of the machining process. New techniques and tools have been developed over the last decade that has brought the process to an advanced place. At first, flood cooling has removed the burning problems in the grinding process. After that, a new technique was developed which is known as minimum quantity lubrication (MQL). This technique is a recognized opportunity to eliminate environmental concerns. This paper reviews some of the common as well as advanced MQL systems specifically used in grinding operations. The effect of MQL and other cutting parameters on cutting forces, surface roughness of the machined workpiece, tool wear, temperature, specific cutting energy, and residual stress is outlined. This paper also addressees the recent trend of cooling systems in the grinding process. After reading this research paper, one can easily get an overview of the previously conducted research to find the output parameter trends in MQL condition. The reader can infer from this paper in which direction the development trend in grinding is in the machining process.
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    Ecological, economical and technological perspectives based sustainability assessment in hybrid-cooling assisted machining of Ti-6Al-4 V alloy
    (Elsevier, 2020) Gupta, Munish Kumar; Song, Qinghua; Liu, Zhanqiang; Sarikaya, Murat; Jamil, Muhammad; Mia, Mozammel; Kushvaha, Vinod
    Ti-6Al-4 V alloy is a well-acknowledged standard material for the application of modern aerospace, surgical equipment, and prosthetic body parts owing to its stable thermo-physical properties at elevated temperature. However, this structure stability imparts its low thermal conductivity that leads to buildup of heat at toolworkpiece interface during machining which subsequently has a damaging effect on the tool cutting edge. Several biodegradable cutting fluids have already been attempted controlling the heat generation, environmental footprints to improve the overall machinability. In this endeavor, the effectiveness of dry, liquid nitrogen (LN2) and hybrid cryogenic and minimum quantity lubrication (LN2 + MQL) conditions was evaluated in terms of important machinability indicators for instance surface roughness, cutting forces and temperature. The environmental parameters such as total cycle time, productivity, economic analysis, energy consumption and carbon emissions were also analyzed under these cooling conditions. Lastly, the sustainability assessment of process parameters was calculated with the help of the Analytic Hierarchy Process (AHP) coupled with the Technique for Order Preference Based on Similarity to Ideal Solution (TOPSIS) techniques. Findings have exhibited superior cooling/lubrication effect under LN2 + MQL conditions lowering the machining as well as environmental indices. The improvement in cycle time and productivity of LN2 and LN2 + MQL was appeared to be 29.01% and 34.21% as compared with dry turning. The sustainability assessment results also revealed that the lower cutting parameters under LN2 + MQL produced best results to achieve the overall sustainability index. (C) 2020 Elsevier B.V. All rights reserved.
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    Environment and economic burden of sustainable cooling/lubrication methods in machining of Inconel-800
    (Elsevier Sci Ltd, 2021) Gupta, Munish Kumar; Song, Qinghua; Liu, Zhanqiang; Sarikaya, Murat; Jamil, Muhammad; Mia, Mozammel; Singla, Anil Kumar
    The present work deals with the machining application of one of the aerospace material i.e., Inconel-800 alloy by considering the social, economic and environmental effects. The turning tests were done under four sustainable machining conditions i.e., dry, vegetable oil with minimum quantity lubrication (MQL) system, graphene nanofluid plus vegetable oil with MQL (NMQL) system and liquid nitrogen (N-2) cooling. Then, the energy consumption, carbon emissions, cost per part, average surface roughness and cutting tool wear have been measured for varied cutting speed and feed rate under selected sustainable environments. The outcomes of this study revealed that the N-2 cooling conditions reduced the total machining cost up to 9.3%, total energy consumption up to11.3%, carbon emissions up to 49.17% and tool wear up to 46.6% as compared to other cooling conditions. Significant improvement in surface roughness and tool wear have also been noticed from the outcomes of N-2 cooling conditions. Hence, it is worthy to mention that these cooling conditions promote sustainability in the aerospace sector by saving resources and extending environmental benefits. (C) 2020 Elsevier Ltd. All rights reserved.
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    Experimental characterisation of the performance of hybrid cryo-lubrication assisted turning of Ti-6Al-4V alloy
    (Elsevier Sci Ltd, 2021) Gupta, Munish Kumar; Song, Qinghua; Liu, Zhanqiang; Sarikaya, Murat; Jamil, Muhammad; Mia, Mozammel; Khanna, Navneet
    In this work, sustainable hybrid cryogenic MQL cooling/lubrication techniques viz. Banque- Hilsch Vortex tube plus MQL (RHVT + MQL), liquid nitrogen plus minimum quantity lubrication (N2+MQL), and liquid nitrogen (N2) are presented for turning Ti-6Al-4V utilizing CVD coated carbide insert. The tool wear, surface roughness, micro-hardness, specific cutting energy, and chip morphology are considered under sustainable cooling conditions and compared with the dry condition. The outcome revealed that the N2+MQL reduced the tons of annual coolant consumption attaining smooth surface quality, minimum built-up-edges of chips, and tool wear. Besides, minimum specific cutting energy and surface hardness achieved under N2+MQL among all cooling conditions. This endeavor is peculiar integrating sustainability and machining perspective under advanced cooling techniques for industrial application of Ti-6Al-4V.
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    Machinability investigations of hardened steel with biodegradable oil-based MQL spray system
    (Springer London Ltd, 2020) Gupta, Munish Kumar; Mia, Mozammel; Jamil, Muhammad; Singh, Rupinder; Singla, Anil Kumar; Song, Qinghua; Liu, Zhanqiang
    Excessive use of coolant is undesirable in machining due to environmental consciousness; thereby, small but efficacious (improved thermal and tribological properties) amount of coolant has been implemented using minimum quantity lubrication (MQL). In this study, attention was focused on the experimental investigations on tool flank wear, chip morphology, surface roughness (R-a and R-q) and chip-tool interface temperature in the machining of hardened steel (similar to 40 HRC) under olive oil-assisted MQL spray system. As investigating factors, the cutting speed, feed rate, and depth of cut were oriented by following the Taguchi orthogonal array. Then, the cooling and lubrication mechanism of the olive oil-assisted MQL system has been discussed. Outcomes of this study showed that MQL is capable of generating favorable machining outcomes, i.e., lower tool flank wear, reduced temperature, and surface roughness in comparison with dry cutting. The reductions in R-a, R-q, and cutting temperature were about 23.4%, 23.8%, and 24% respectively in terms of mean values. The two types of dominant chip shapes, i.e., (1) continuous tubular and (2) discontinuous small diameter chips, were produced under the dry and MQL-assisted cooling method. In the nutshell, it is appropriate to claim that the overall thermal and tribological properties of olive oil-assisted MQL system are responsible for fruitful results during turning of hardened steel.
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    Progress for sustainability in the mist assisted cooling techniques: a critical review
    (Springer London Ltd, 2020) Singh, Gurraj; Gupta, Munish Kumar; Hegab, Hussein; Khan, Aqib Mashood; Song, Qinghua; Liu, Zhanqiang; Mia, Mozammel
    The proper implementation of sustainable manufacturing processes is an effective step towards a clean environment. The modern cooling strategies applied in the manufacturing sector have presented promising solutions that enable economic growth and ecological environment. In machining operations, cryogenic cooling and minimum quantity lubrication (MQL) have been extensively utilized to replace conventional cooling techniques. Thus, this work offers a detailed review of major works focused on manufacturing processes that use some of these sustainable cooling/lubrication modes (i.e., MQL, nanocutting fluids, nanofluid-based MQL strategy, and other miscellaneous MQL upgrades). The main driver of this study is to create a bridge between the past and present studies related to MQL and MQL upgrades. In this way, a new guideline can be established to offer clear directions for a better economic vision and a cleaner manufacturing process. Thus, this review has mainly focused on the machining of the most commonly used materials under MQL-related methods in conventional operations including turning, milling, drilling, and grinding. Current work provides a detailed insight into the major benefits, limitations, as well as mechanisms of cooling strategies that directly affects the machinability performance from a sustainable point of view. In summary, further potential upgrades are indicated so that it will help to drive more sustainable approaches in terms of cooling and lubrication environment during machining processes.
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    Tribological behavior of textured tools in sustainable turning of nickel based super alloy
    (Elsevier Sci Ltd, 2021) Gupta, Munish Kumar; Song, Qinghua; Liu, Zhanqiang; Singh, Rupinder; Sarikaya, Murat; Khanna, Navneet
    In this research study, textured tools were fabricated and used for machining under different cooling conditions. The most important uniqueness of the work lies in the use of textured tools for machining Inconel-718 under dry, Nitrogen cooling and nanofluids (hBN mixed with minimum quantity lubrication) conditions. In the turning experiments, two different level of cutting speed i.e., 75 and 125 m/min and a constant level for feed rate (0.1 mm/rev) and depth of cut (0.5 mm) were considered. The above three conditions were tested and compared with and without the use of textured tools. The tool wear, surface roughness, cutting temperature, micro-hardness of machined samples and chip morphology were investigated under these subjected conditions and at turning parameters. The results demonstrated that the nanofluids with textured tool provide the superior results in comparison with other cooling conditions. These results establish textured tools as a sustainable alternative to the existing cutting tool technology being used in the manufacturing industry.
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    Tribological performance based machinability investigations in cryogenic cooling assisted turning of α-β titanium Alloy
    (Elsevier Sci Ltd, 2021) Gupta, Munish Kumar; Song, Qinghua; Liu, Zhanqiang; Sarikaya, Murat; Mia, Mozammel; Jamil, Muhammad; Singla, Anil Kumar
    Machining of titanium is considered as a challenging process due to its ability to interact with various tool materials when critical cutting temperature is exceeded, resulting in excessive tool wear and poor surface finish, etc. To exhibit an efficient machining process, this research study has experimentally investigated the key quality indicators of machinability, namely surface roughness, cutting temperature, tool wear, in-depth analysis of worn tool and cutting force in the machining process of alpha-beta titanium alloy, which used in critical applications, under three sustainable cooling environments i.e., dry, liquid nitrogen (LN2) and carbon dioxide (CO2). The effect of cutting speed and feed rate on such performance measures were examined under a function of cooling strategy as the best substitute in machining. As a result, the feasibility of LN2 cooling has been confirmed to be more significant for the machining of alpha-beta titanium alloy when compared to dry and CO2 machining strategies. To sum up, cryogenic cooling (LN2 cooling) assisted machining of alpha-beta titanium has acquiesced as a sustainable strategy in the context of environmental consciousness.