Effect of C60 Nanoparticle Cutting Fluid on Cutting Characteristics of 15Cr14Co12Mo5Ni2WA Gear Steel

doi:10.3901/JME.2023.23.358

Abstract

Abstract: The cutting characteristics of high strength steel 15Cr14Co12Mo5Ni2WA show that the cutting force is large, resulting in rapid tool wear and serious chipping, and poor machining accuracy retention. To solve the above problems, it is proposed that fullerene C60 nanoparticles mixed cutting fluid act on the tool-chip contact zone (II deformation zone) and tool-tool contact zone (III deformation zone) in the metal cutting process to improve the cutting performance. Based on the modified Coulomb friction and Hertzian contact theory, the prediction model of antifriction and lubrication of C60 nanoparticles in tool-chip contact is established, and the "nano-rolling bearing" effect and antifriction characteristics of cutting contact interface are studied and predicted. Based on the friction and wear test, the change of friction characteristics of C60 nano-cutting fluid with different concentrations is measured. The advanced measurement methods such as 3D microscope, SEM and Raman spectrometer are used to characterize the micro-morphology of wear scars on the surface of the samples, and the friction and wear mechanism is studied in depth. The cutting test shows that C60 nano cutting fluid has a good anti-friction effect, which effectively reduces the cutting force, process system vibration and tool wear, and significantly improves the cutting performance. When it is used in the slotting process, the phenomenon of tool tipping caused by cutting impact vibration is significantly reduced, the phenomenon of local spalling on the rake face caused by cold welding tear disappears, and the service life of the tool is prolonged.

Key words: C60, nanofluid, friction, cutting force, tool wear

CLC Number:

TB34
TH140

HUANG Jingshan, LIU Guoliang, SUN Hao, YAO Bin, JIN Lin, CHEN Binqiang, CAO Xincheng, WANG Shancheng, XU Hao, CAI Zhiqin. Effect of C60 Nanoparticle Cutting Fluid on Cutting Characteristics of 15Cr14Co12Mo5Ni2WA Gear Steel[J]. Journal of Mechanical Engineering, 2023, 59(23): 358-371.

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