Minimum quantity lubrication machining of aeronautical materials using carbon group nanolubricant: From mechanisms to application |
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| Institution: | 1. School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, China;2. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;3. Chengdu Tool Research Institute Co., Ltd. Chengdu 610500, China;4. College of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410114, China;5. Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education & Zhejiang Province, Zhejiang University of Technology, Hangzhou 310032, China;6. Sichuan Future Aerospace Industry LLC., Shifang 618400, China;7. School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China;8. School of Aerospace, University of Nottingham Ningbo China, Ningbo 315100, China;9. College of Engineering, University of Sharjah, Sharjah 27272, United Arab Emirates;10. Mechanical Engineering Department, Curtin University, Miri 98009, Malaysia;11. Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;12. Department of Mechanical Engineering and Advanced Materials Science, Council of Scientific and Industrial Research (CSIR) - Central Leather Research Institute (CLRI), Regional Center for Extension and Development, Jalandhar 144021, India |
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| Abstract: | It is an inevitable trend of sustainable manufacturing to replace flood and dry machining with minimum quantity lubrication (MQL) technology. Nevertheless, for aeronautical difficult-to-machine materials, MQL couldn’t meet the high demand of cooling and lubrication due to high heat generation during machining. Nano-biolubricants, especially non-toxic carbon group nano-enhancers (CGNs) are used, can solve this technical bottleneck. However, the machining mechanisms under lubrication of CGNs are unclear at complex interface between tool and workpiece, which characterized by high temperature, pressure, and speed, limited its application in factories and necessitates in-depth understanding. To fill this gap, this study concentrates on the comprehensive quantitative assessment of tribological characteristics based on force, tool wear, chip, and surface integrity in titanium alloy and nickel alloy machining and attempts to answer mechanisms systematically. First, to establish evaluation standard, the cutting mechanisms and performance improvement behavior covering antifriction, antiwear, tool failure, material removal, and surface formation of MQL were revealed. Second, the unique film formation and lubrication behaviors of CGNs in MQL turning, milling, and grinding are concluded. The influence law of molecular structure and micromorphology of CGNs was also answered and optimized options were recommended by considering diverse boundary conditions. Finally, in view of CGNs limitations in MQL, the future development direction is proposed, which needs to be improved in thermal stability of lubricant, activity of CGNs, controllable atomization and transportation methods, and intelligent formation of processing technology solutions. |
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| Keywords: | Aerospace materials Carbon nanoparticles Grinding Lubrication mechanism Milling Minimum quantity lubrication Turning |
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