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首页> 外文期刊>Journal of nanoparticle research: An interdisciplinary forum for nanoscale science and technology >Experimental verification of nanoparticle jet minimum quantity lubrication effectiveness in grinding
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Experimental verification of nanoparticle jet minimum quantity lubrication effectiveness in grinding

机译：纳米粒子射流最小磨削润滑效果的实验验证

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In our experiment, K-P36 precision numerical control surface grinder was used for dry grinding, minimum quantity lubrication (MQL) grinding, nanoparticle jet MQL grinding, and traditional flood grinding of hardened 45 steel. A three-dimensional dynamometer was used to measure grinding force in the experiment. In this research, experiments were conducted to measure and calculate specific tangential grinding force, frictional coefficient, and specific grinding energy, thus verifying the lubrication performance of nanoparticles in surface grinding. Findings present that compared with dry grinding, the specific tangential grinding force of MQL grinding, nanoparticle jet MQL grinding, and flood grinding decreased by 45.88, 62.34, and 69.33 %, respectively. Their frictional coefficient was reduced by 11.22, 29.21, and 32.18 %, and the specific grinding energy declined by 45.89, 62.34, and 69.45 %, respectively. Nanoparticle jet MQL presented ideal lubrication effectiveness, which was attributed to the friction oil film with strong antifriction and anti-wear features formed by nanoparticles on the grinding wheel/workpiece interface. Moreover, lubricating properties of nanoparticles of the same size (50 nm) but different types were verified through experimentation. In our experiment, ZrO2 nanoparticles, polycrystal diamond (PCD) nanoparticles, and MoS2 nanoparticles were used in the comparison of nanoparticle jet MQL grinding. The experimental results manifest that MoS2 nanoparticles exhibited the optimal lubricating effectiveness, followed by PCD nanoparticles. Our research also integrated the properties of different nanoparticles to analyze the lubrication mechanisms of different nanoparticles. The experiment further verified the impact of nanoparticle concentration on the effectiveness of nanoparticle jet MQL in grinding. The experimental results demonstrate that when the nanoparticle mass fraction was 6 %, the minimum specific tangential grinding force, frictional coefficient, and specific grinding energy were 1.285 N/mm, 0.382, and 57.825 J/mm(3), respectively. When nanoparticle mass fraction was smaller than 6 %, lubrication effects of nanoparticle jet MQL increased with the rising nanoparticle mass fraction. When nanoparticle mass fraction was larger than 6 %, lubrication effects of nanoparticle jet MQL decreased with the rising nanoparticle mass fraction.
机译：在我们的实验中，使用K-P36精密数控平面磨床进行干磨，最小量润滑（MQL）磨削，纳米颗粒射流MQL磨削和传统的淬火45钢泛滥磨削。在实验中使用三维测功机测量磨削力。在这项研究中，进行了测量和计算比切向磨削力，摩擦系数和比磨削能量的实验，从而验证了纳米颗粒在表面磨削中的润滑性能。研究发现，与干磨相比，MQL磨，纳米颗粒射流MQL磨和溢流磨的比切向磨削力分别降低了45.88％，62.34和69.33％。它们的摩擦系数降低了11.22％，29.21％和32.18％，比磨削能量分别降低了45.89％，62.34％和69.45％。纳米颗粒喷射MQL表现出理想的润滑效果，这归因于由砂轮/工件界面上的纳米颗粒形成的具有强烈抗磨和抗磨特性的摩擦油膜。此外，通过实验验证了相同尺寸（50 nm）但不同类型的纳米颗粒的润滑性能。在我们的实验中，将ZrO2纳米颗粒，多晶金刚石（PCD）纳米颗粒和MoS2纳米颗粒用于纳米颗粒射流MQL研磨的比较。实验结果表明，MoS2纳米颗粒表现出最佳的润滑效果，其次是PCD纳米颗粒。我们的研究还整合了不同纳米颗粒的特性，以分析不同纳米颗粒的润滑机理。实验进一步验证了纳米颗粒浓度对纳米颗粒射流MQL研磨效率的影响。实验结果表明，当纳米颗粒的质量分数为6％时，最小比切向磨削力，摩擦系数和比磨削能分别为1.285 N / mm，0.382和57.825 J / mm（3）。当纳米颗粒质量分数小于6％时，纳米颗粒射流MQL的润滑效果随着纳米颗粒质量分数的增加而增加。当纳米粒子质量分数大于6％时，纳米粒子射流MQL的润滑效果随着纳米粒子质量分数的增加而降低。

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