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<p>Green minimum-quantity lubrication (green NMQL) is an eco-friendly grinding strategy that reduces fluid consumption and operator exposure while maintaining cooling and lubrication. It has attracted widespread attention from industry and academia. However, existing grinding fluids face issues such as poor performance, difficulty reaching the grinding zone, and significant harm to human health, limiting the further development of green grinding. This work innovatively incorporates magnetic graphene oxide into the grinding fluid to overcome these challenges, significantly enhancing its lubrication and cooling properties while enabling its low-loss recycling. Magnetic graphene oxide is formed by chemically grafting graphene oxide with ferric tetraoxide, combining the lubrication properties of graphene with strong magnetic characteristics. Under the influence of a magnetic field-assisted micro-lubrication system, it can penetrate the grinding zone, achieving efficient and eco-friendly lubrication. Experimental results show that magnetic graphene nanofluids significantly reduce friction, wear, and frictional temperature. Compared with dry grinding, the friction coefficient is reduced by 31.5%, wear by 36.25%, and the friction temperature increment by 43.96%. These improvements enhance the operational efficiency of mechanical systems. Additionally, the magnetic properties of graphene facilitate its recovery from waste fluid, promoting environmental protection and resource utilization. This innovative research provides a foundation for the future development of grinding fluids, demonstrating that magnetic graphene nanofluids hold promise for improving industrial lubrication performance and environmental sustainability.</p>

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Preparation and lubrication performance of magnetic graphene oxide for green grinding

  • 期刊论文

  • 发表日期：

    2025年10月21日

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  • Wei Li,
  • Bowen Shi,
  • Shajiu Le,
  • Ahmed Mohamed Mahmoud Ibrahim,
  • Chengbin Liu

摘要

Green minimum-quantity lubrication (green NMQL) is an eco-friendly grinding strategy that reduces fluid consumption and operator exposure while maintaining cooling and lubrication. It has attracted widespread attention from industry and academia. However, existing grinding fluids face issues such as poor performance, difficulty reaching the grinding zone, and significant harm to human health, limiting the further development of green grinding. This work innovatively incorporates magnetic graphene oxide into the grinding fluid to overcome these challenges, significantly enhancing its lubrication and cooling properties while enabling its low-loss recycling. Magnetic graphene oxide is formed by chemically grafting graphene oxide with ferric tetraoxide, combining the lubrication properties of graphene with strong magnetic characteristics. Under the influence of a magnetic field-assisted micro-lubrication system, it can penetrate the grinding zone, achieving efficient and eco-friendly lubrication. Experimental results show that magnetic graphene nanofluids significantly reduce friction, wear, and frictional temperature. Compared with dry grinding, the friction coefficient is reduced by 31.5%, wear by 36.25%, and the friction temperature increment by 43.96%. These improvements enhance the operational efficiency of mechanical systems. Additionally, the magnetic properties of graphene facilitate its recovery from waste fluid, promoting environmental protection and resource utilization. This innovative research provides a foundation for the future development of grinding fluids, demonstrating that magnetic graphene nanofluids hold promise for improving industrial lubrication performance and environmental sustainability.