MoS2/CNTs混合纳米流体微量润滑磨削加工表面质量试验评价

doi:10.3901/JME.2018.01.161

机械工程学报 ›› 2018, Vol. 54 ›› Issue (1): 161-170.doi: 10.3901/JME.2018.01.161

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MoS₂/CNTs混合纳米流体微量润滑磨削加工表面质量试验评价

张彦彬¹, 李长河¹, 贾东洲¹, 李本凯¹, 王要刚¹, 杨敏¹, 侯亚丽¹, 张乃庆², 吴启东²

1. 青岛理工大学机械工程学院青岛 266520;
2. 上海金兆节能科技有限公司上海 200436

收稿日期:2017-01-18 修回日期:2017-06-11 出版日期:2018-01-05 发布日期:2018-01-05
通讯作者: 李长河(通信作者),男,1966年出生,博士,教授,博士研究生导师。主要研究方向为切削磨削加工理论与技术。E-mail:sy_lichanghe@163.com
作者简介:张彦彬,男,1990年出生,博士研究生。主要研究方向为切削磨削加工理论与技术。E-mail:zhangyanbin1_QDLG@163.com
基金资助:
国家自然科学基金（51575290，51175276）、青岛市应用基础研究计划（14-2-4-18-jch）和黄岛区应用研究（2014-1-55）资助项目。

Experimental Evaluation of the Workpiece Surface Quality of MoS₂/CNT Nanofluid for Minimal Quantity Lubrication in Grinding

ZHANG Yanbin¹, LI Changhe¹, JIA Dongzhou¹, LI Benkai¹, WANG Yaogang¹, YANG Min¹, HOU Yali¹, ZHANG Naiqing², WU Qidong²

1. School of Mechanical Engineering, Qingdao University of Technology, Qingdao 266520;
2. Shanghai Jinzhao Energy Saving Technology CO. LTD, Shanghai 200436

Received:2017-01-18 Revised:2017-06-11 Online:2018-01-05 Published:2018-01-05

摘要/Abstract

摘要： 结合国内外对混合纳米流体微量润滑磨削的研究现状，研究二硫化钼和碳纳米管混合纳米流体微量润滑磨削镍基合金的工件表面质量。以工件表面粗糙度R_a值、表面轮廓曲线的自相关分析和工件表面微观形貌，作为表面质量表征参数。试验结果表明：纳米流体微量润滑由于纳米粒子高的强化换热能力从而避免了工件烧伤；混合纳米流体由于起到了“物理协同作用”，较单一纳米流体得到了最低的表面粗糙度R_a值（0.311 μm）和磨削温度峰值（52.8℃）；随纳米流体质量分数的增加，表面粗糙度R_a值呈现上升趋势，这是由于质量分数的增加改变了微量润滑雾滴与工件的接触角，从而改变了浸润面积；而摩擦因数和磨削温度峰值在6%取得最低值后呈上升趋势，这是由于纳米粒子的团聚破坏了纳米流体性能。通过工件表面轮廓曲线的自相关分析进一步验证，纳米粒子在磨削区起到“润滑作用”和“微加工”作用，从而提高了加工精度。因此，综合磨削性能、表面粗糙度和自相关分析，选择混合纳米流体质量分数6%为纳米流体的优选质量分数。

关键词: 表面质量, 混合纳米流体, 磨削, 微量润滑, 自相关分析

Abstract: An experimental research on effect of MoS₂/CNTs hybrid nanofluid minimum quantity lubrication (MQL) grinding on workpiece surface quality of difficult-to-cut materials is carried out based on research status of nanofluids MQL. Surface roughness R_a, autocorrelation analysis of contour curve and surface topography (SEM) are studied in research. Experimental results show that nanofluid MQL avoid burn phenomenon due to nanoparticles can significantly improve heat transfer of nanofluids. The MoS₂/CNT hybrid nanoparticles achieve lower surface roughness R_a value and grinding peak temperature than single nanoparticles because of "physical synergistic effect". Influenced by viscosity of nanofluids, surface roughness (R_a) increases gradually with the increase of mass fraction of nanofluid. Friction coefficient and grinding peak temperature, influenced by "agglomeration", decreases firstly and then increases with the increase of mass fraction of nanofluid, reaching the valley at 6%. According to the autocorrelation analysis, nanoparticle improves the grinding accuracy due to the "lubrication effect" and "micro-machining". It conclude that 6%, "agglomeration" phenomenon occurred concentration, MoS₂/CNTs is the optimum concentration for nanofluid MQL in the experiment.

Key words: autocorrelation analysis, grinding, minimum quantity lubrication (MQL), MoS₂/CNTs nanofluids, workpiece surface quality

中图分类号:

TG580

张彦彬, 李长河, 贾东洲, 李本凯, 王要刚, 杨敏, 侯亚丽, 张乃庆, 吴启东. MoS₂/CNTs混合纳米流体微量润滑磨削加工表面质量试验评价[J]. 机械工程学报, 2018, 54(1): 161-170.

ZHANG Yanbin, LI Changhe, JIA Dongzhou, LI Benkai, WANG Yaogang, YANG Min, HOU Yali, ZHANG Naiqing, WU Qidong. Experimental Evaluation of the Workpiece Surface Quality of MoS₂/CNT Nanofluid for Minimal Quantity Lubrication in Grinding[J]. Journal of Mechanical Engineering, 2018, 54(1): 161-170.

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MoS₂/CNTs混合纳米流体微量润滑磨削加工表面质量试验评价

Experimental Evaluation of the Workpiece Surface Quality of MoS₂/CNT Nanofluid for Minimal Quantity Lubrication in Grinding

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