Influence of minimum quantity lubrication parameters on grind-hardening process
Influence of minimum quantity lubrication parameters on grind-hardening process
复制标题
最小量润滑参数对磨削硬化过程的影响
DOI：
10.1080/10426914.2016.1269916
复制
发表时间：
2018-01-01
影响因子：
4.8
通讯作者：
Zhang, Gaofeng
中科院分区：
文献类型：
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作者：
Huang, Xiangming;Ren, Yinghui;Zhang, Gaofeng
目前，人们研究了干磨硬化技术，以获得较深的磨削硬化层。对于干式磨削硬化工艺，磨削表面可能具有较差的表面质量。在我们以前的研究中，微量润滑（MQL）已被证明是一种有效的方法，以提高磨削硬化过程中的表面质量。然而，表面质量和MQL参数之间的关系仍然不清楚。本文研究了不同喷涂参数（流量、气压、喷嘴位置、喷涂距离）对退火钢AISI 5140的平面磨削试验。从磨削力和表面粗糙度、显微硬度、磨削淬硬层深度等表面质量方面分析了磨削淬硬性能。结果表明，MQL能提高磨削表面粗糙度和磨削硬化层的显微硬度。表面粗糙度可以通过更好的润滑来改善，这可以通过适当的喷雾方向来实现。表面粗糙度和硬化层深度随流体流量和气压的增大而减小，随喷涂距离的增大而增大。
Currently, dry grind-hardening has been studied to achieve a deep grinding harden layer. For dry grind-hardening process, the ground surface may have a poor surface quality. In our previous research, minimum quantity lubrication (MQL) has been proved as an effective way to improve the surface quality in grind-hardening process. Unfortunately, the relationship between the surface quality and parameters of MQL is still not clear. In this paper, different spraying parameters (fluid flow, air pressure, nozzle location, spraying distance) are investigated in surface grinding experiments of annealed steel AISI 5140. Grind-hardening performances are analyzed for grinding force and surface quality, such as surface roughness, micro-hardness, and grinding harden layer depth. Consequently, the results show that MQL can improve the grinding surface roughness and the micro-hardness of the grinding harden layer. The surface roughness can be improved with a better lubrication, which can be achieved with the appropriate spray direction. The surface roughness and the harden layer depth are reduced with the increasing fluid flow rate and air pressure, while they increase with the spraying distance.