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A special issue of Lubricants (ISSN 2075-4442).
Deadline for manuscript submissions: closed (15 July 2023) | Viewed by 8821
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Special Issue Editor
Department of Mechanical Engineering, Indian Institute of Information Technology, Design and Manufacturing, Kancheepuram, Chennai 600127, India
Interests: smart manufacturing and industry 4.0; green and sustainable machining processes; advanced machining processes; micromanufacturing processes; nano and bio-tribology; green lubricants and coolants; coatings
Special Issue Information
Dear Colleagues,
Humans impact on the environment in numerous ways. Human civilization requires a healthy environment to ensure the survival of life on our planet. An effective balance between the environment and technology is pressing the need of today’s world. Technology has made our lives more comfortable, but our environment is paying a high price. Nowadays, it is fully understood how necessary a healthy environment is, both for humans and the survival of life on this planet. Therefore, efforts are increasing towards the adaptation of green and sustainable technology to reduce detrimental environmental impact.
Sustainable machining and manufacturing processes are desperately required. Among various manufacturing processes, machining is one of the most widely used. Hence, it must be made sustainable. The indirect impact of machining, due to its effect on surface integrity, and hence on product life, is even greater. Moreover, as economic factors induce shorter product cycles, and more flexible manufacturing systems, the importance of machining is expected to increase even further.
In traditional machining operations, a major environmental issue is the abundant, and often indiscriminate use of metalworking fluids (MWFs). The problems associated with conventional flood cooling are the indiscriminate use of cutting fluids, subsequent surface integrity and product life, operator health, machining cost, energy consumption and chip recyclability. However, sustainable machining leads to improved environmental friendliness, reduced cost, reduced power consumption, reduced wastes, enhanced operational safety, and improved personnel health. Among sustainable machining methods, dry cutting appears to be the most sustainable alternative to present methods for avoiding the undesired effects of MWFs. Minimum quantity lubrication is used where dry manufacturing is not feasible and/or flood cooling becomes undesirable. Cryogenic cooling is a good candidate to replace conventional cooling/lubricating methods as it provides improved environmental effects and no adverse health effects.
This research topic on “Advances in Sustainable Machining” has been launched to spotlight recent developments associated with dry cutting, minimum quantity lubrication, cryogenic cooling, and their hybrids, as well as their effects on the economy, environment and society. Furthermore, this collection aims to discuss the advantages and disadvantages of sustainable machining methods, ultimately investigating and examining their feasibilities.
We invite researchers to submit original research and review studies that deal with, but are not limited to, the following topics:
- Dry cutting
- Textured cutting tools
- Minimum quantity lubrication (MQL)
- Cryogenic cooling
- Application of nanofluids and ionic liquid-based lubricants in machining
- Carbon emissions during machining
- Cost estimations for machining
- Life cycle analysis of machining and lubricants
- Tribology of machining
- Friction and wear of cutting tools
Dr. Kishor Kumar Gajrani
Guest Editor
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Lubricants is an international peer-reviewed open access monthly journal published by MDPI.
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Keywords
- dry cutting
- minimum quantity lubrication
- cryogenic cooling
- vegetable fluids
- nanofluids
- ionic liquid-based lubricants
- carbon emissions
- machining cost
- tribology of machining
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12 pages, 2344 KiB
Open AccessArticle
Analysis of Changes in Soot Content in Engine Oils under Operating Conditions
by Grzegorz Zając, Wojciech Gołębiowski, Małgorzata Szczepanik, Artur Wolak and Marie Sejkorová
Lubricants 2023, 11(2), 89; https://doi.org/10.3390/lubricants11020089 - 18 Feb 2023
Cited by 2 |Viewed by 2493
Abstract
Oil has an enormous influence on the condition of the engine. Determining its degradation allows companies to maximize the availability of a specific vehicle and fleet of vehicles in general. In the evolution of engine oil degradation, one of the variables considered to [...] Read more.
Oil has an enormous influence on the condition of the engine. Determining its degradation allows companies to maximize the availability of a specific vehicle and fleet of vehicles in general. In the evolution of engine oil degradation, one of the variables considered to be the most important is soot content. This article examines the direction and severity of soot content and dispersion changes in engine oil occurring during actual engine operation during four complete change intervals. The oil under study was operated in a city bus. It belonged to the fleet of vehicles of a transport company from new to the mileage of about 200,000 km. Soot content was determined in accordance with ASTM E2412-10, while dispersion size was determined using the dried drop test in accordance with ASTM D7899. The results obtained provide the basis for the conclusion that the direction of change in soot content in each interval is characterized by a high degree of homogeneity. With respect to the degree of soot build-up, a high level of similarity was observed between the intervals studied. The study of change in the degree of oil dispersion using the “drop on blotter” method made it possible to confirm the trend of decreasing dispersion as the run increases. The obtained results led to the development of a statistical model describing these relationships. Full article
(This article belongs to the Special Issue Advances in Sustainable Machining)
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20 pages, 20050 KiB
Open AccessArticle
Investigation on Surface Integrity in Hard Turning of AISI 4140 Steel with SPPP-AlTiSiN Coated Carbide Insert under Nano-MQL
by Smita Padhan, Naresh Kumar Wagri, Lalatendu Dash, Anshuman Das, Sudhansu Ranjan Das, Mohammad Rafighi and Priyaranjan Sharma
Lubricants 2023, 11(2), 49; https://doi.org/10.3390/lubricants11020049 - 30 Jan 2023
Cited by 19 |Viewed by 2534
Abstract
The machined surface integrity in the turning of hardened steels is adversely influenced by heat generation and friction which requires pacification of the temperature by the effective cooling-lubrication approach and cutting tool performance. The present research analyzes the surface integrity of hardened AISI [...] Read more.
The machined surface integrity in the turning of hardened steels is adversely influenced by heat generation and friction which requires pacification of the temperature by the effective cooling-lubrication approach and cutting tool performance. The present research analyzes the surface integrity of hardened AISI 4140 steel during turning with recently developed scalable pulsed power plasma SPPP-AlTiSiN coated carbide tool under nanofluid-assisted minimum quantity lubrication (MQL). Zinc oxide nanoparticles and environmentally friendly radiator coolant are mixed to prepare the nano cutting fluid. This analysis addresses the various aspects of surface integrity concerning surface morphology, machined surface hardness, residual stress and white layer development, and machined surface finish under varying cutting parameters (depth of cut, speed, feed, nose radius). Response surface methodology (RSM) is suggested to predict and to optimize the surface roughness in hard turning. Thereafter, the predictive modelling and optimization results are implemented for economic analysis. According to the findings of the experiments, with a contribution of 58.18%, the feed rate possesses a high impact on the surface finish, followed by the nose radius (12.32%) and speed (0.85%). Consequently, the machined surface quality improved with the increase of the nose radius because of the minimum tool wear and due to the increase of the effective length of the cutting edge. At optimum cutting conditions, the tool life of SPPP-AlTiSiN coated carbide insert is noted as 46 minutes under nanofluid-MQL and consequently, it estimated the overall machining cost per component as Rs.23.12 in Indian currency. Full article
(This article belongs to the Special Issue Advances in Sustainable Machining)
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