Collaborative Research: Design and Fundamental Understanding of Advanced Minimum Quantity Lubrication (MQL) Machining using Nanolubricants

本合作研究项目的目的是研究活性二硫化钼润滑油纳米颗粒与有机分子结合的变形机理。塑性变形，从而形成一个摩擦膜，将特别研究当引入最小量的润滑磨削和深孔钻。寻求这一目标的技术途径首先需要研究与加工中基液相容的活性纳米润滑剂的物理、化学和摩擦学性能。在这项研究的下一阶段，将研究纳米润滑剂配方的浓度和数量、切削深度、速度和加工道次的作用。结果将通过实验和部分理论来评估，使用各种原位和非原位参数，如切削力、刀具磨损、工件表面光洁度和完整性、纳米和微观结构、摩擦膜的位置、分布和化学性质，以及碎屑的大小和化学性质，以研究摩擦膜在降低切削力、增加刀具寿命和提供更好的加工工件表面质量方面的作用。此外，一项研究将解决整合在纳米颗粒中的油分子的瞬态蒸发及其随后作为加工界面传热有效载体的作用。这项研究的广泛影响是促进更换循环润滑系统，这是性能变化和重要废物流的来源。此外，预计在最苛刻的加工应用中，将以低成本节省能源和提高生产率。此外，这项研究是一个例子，说明美国最近对纳米制造的投资如何使传统的机械加工和制造业显著受益，从而提高一系列与基础设施相关的制造业的生产率。训练学生掌握纳米技术将是促进新一代创新的重要组成部分。

The objective of this collaborative research project is to study the mechanism of deformation of active molybdenum disulphide lubricant nanoparticles, integrated with organic molecules. The plastic deformation, and thus formation of a tribofilm, will be studied particularly when introduced in minimum quantity lubrication grinding and deep hole drilling. The technical approach to seek the objective necessitates first to study physical, chemical and tribological properties of active lubricant nanoparticles compatible with base fluids used in machining. In the next phase of this study the role of concentration and quantity of nanolubricant formulations, depth of cut, speed and number of machining passes will be investigated. The outcome will be assessed experimentally and partly theoretically using various in situ and ex situ parameters such as cutting forces, tool wear, surface finish and integrity of the workpiece, nano and micro structure, location, distribution and chemistry of the triobofilm, and size and chemistry of debris for studying the role of tribofilm in reducing cutting forces, increasing tool life and providing better surface quality of the machined workpiece. Additionally, one study will address understanding the transient evaporation of oil molecules integrated in nanoparticles and their subsequent role as an effective vehicle for heat transfer at the machining interface.The broad impact of this research is in facilitating the replacement of recirculating lubrication systems, which are sources of performance variation and significant waste streams. In addition, it is expected there will be energy savings and an increase in productivity at low cost in the most demanding machining applications. Further, this research is an example of how recent investment in nanomanufacturing in the United States can significantly benefit traditional machining and manufacturing industries to increase productivity in a range of infrastructure-related manufacturing industries. Training students in this nanotechnology will be an important component in the facilitation of a new generation of innovation.