Characterization and experimental investigation of Al2O3 nanoparticle based cutting fluid in turning of AISI 1040 steel under minimum quantity lubrication (MQL)
Characterization and experimental investigation of Al2O3 nanoparticle based cutting fluid in turning of AISI 1040 steel under minimum quantity lubrication (MQL)
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DOI：
10.1016/j.matpr.2016.04.090
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
A. Sharma;R. Singh;A. Dixit;A. Tiwari
中科院分区：
文献类型：
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作者：
A. Sharma;R. Singh;A. Dixit;A. Tiwari
在金属切削加工过程中，切削液起着至关重要的作用，它可以冷却和润滑刀具-工件界面，并从切削区去除切屑。因此，切削液可显著影响这些界面处的摩擦学条件。然而，常规切削液的过量使用对人类健康和环境都产生了负面影响。这导致了一类新型切削液的开发，该切削液具有上级热性能和摩擦学性能，以限制其在加工过程中的过度使用。在基础流体中的金属或非金属纳米尺寸颗粒的胶体混合物被称为纳米流体。在过去的十年中，纳米流体由于其改善的导热性和热提取能力而引起了研究人员的注意。在本工作中，一种新的纳米流体的制备通过混合纳米Al 2 O3在常规切削液中以不同的浓度。所制备的纳米流体的特征在于其在所有纳米颗粒浓度下的热导率和粘度。并以AISI 1040钢为例，采用最小量润滑（MQL）技术，对其切削性能进行了试验研究。并与使用常规切削液的干加工和湿/MQL加工的结果进行了比较。实验研究清楚地表明，性能的Al 2 O3纳米流体的表面粗糙度，刀具磨损，切削力和芯片形态被发现是更好的干加工，湿加工与传统的切削液和MQL使用传统的切削液。
During metal cutting operation, cutting fluid plays a vital role by cooling and lubricating the tool-work piece interface and removing chips from the cutting zone. As a result, a cutting fluid may significantly affect the tribological conditions at these interfaces. However, human health and environment both are affected negatively by the excessive use of conventional cutting fluid. This has led to the development of a new class of cutting fluid with superior thermal and tribological properties to restrict its extravagant use during machining. A colloidal mixture of metallic or non-metallic nano meter sized particles in a base fluid is called nanofluid. For the last one decade, nanofluids have attracted the attention of researchers due to its improved thermal conductivity and heat extraction capability. In the present work, a new nanofluid is prepared by mixing Al2O3nanoparticles in conventional cutting fluid at different concentrations. The prepared nanofluid is characterized for its thermal conductivity and viscosity at all nanoparticle concentrations. Furthermore, its machining performance is examined in turning workpiece of AISI 1040 steel using minimum quantity lubrication (MQL) technique. The results are also compared with that of dry machining and wet/MQL machining using conventional cutting fluid. The experimental study clearly reveals that performance of Al2O3nanofluid in terms of surface roughness, tool wear, cutting force and chip morphology is found to be better compared to dry machining, wet machining with conventional cutting fluid and MQL using conventional cutting fluid.