边界润滑膜温度特性试验机的研制与试验研究
发布时间：2018-10-07 19:06
【摘要】：边界润滑是机械设备中最主要的润滑形式,而在润滑油中加入各种添加剂是提高其边界润滑性能的重要手段。因此,开展边界润滑膜评价方法的研究,对于添加剂的合理选择与应用具有重要意义。 依据摩擦学原理推导出目前所采用的临界载荷法和临界速度法作为边界润滑膜性能评价方法所存在的问题,提出了一种新的评价方法：临界温度法。为了验证该评价方法的正确性,开展了边界润滑膜温度特性试验方法的研究,针对试验要求,进行了试验机机械系统的设计与制造。 根据边界润滑膜温度特性试验机的功能需求,开发了一套基于虚拟仪器LabVIEW的测量与控制系统。包括步进电机控制系统、摩擦力测量系统、温度控制系统以及数据存储系统,并设计了友好的测控系统操作界面。 开展了多种润滑添加剂的边界膜温度性能试验,并对试验数据进行了分析和处理,获得了润滑添加剂的边界膜温度特性。 试验结果表明：本文所设计的试验方法能够全面的反映边界润滑膜各温度点的摩擦特征,并且对各种油样有好的分辨能力,采用边界膜临界温度试验方法所获得的摩擦系数—温度曲线,不仅能清楚反映边界膜开始失效的临界温度值,而且能反映出润滑添加剂的影响区间。
[Abstract]:Boundary lubrication is the most important form of lubrication in mechanical equipment, and adding various additives to lubricating oil is an important means to improve its boundary lubrication performance. Therefore, the research on the evaluation method of boundary lubricating film is of great significance for the rational selection and application of additives. According to the tribology principle, the problems of critical load method and critical velocity method as boundary lubricating film performance evaluation methods are deduced, and a new evaluation method, critical temperature method, is put forward. In order to verify the correctness of the evaluation method, the test method of boundary lubricating film temperature characteristic was studied, and the design and manufacture of the mechanical system of the testing machine was carried out according to the test requirements. A measurement and control system based on virtual instrument LabVIEW is developed according to the functional requirements of the boundary lubricating film temperature characteristic tester. It includes stepper motor control system, friction measurement system, temperature control system and data storage system. The boundary film temperature properties of various lubricating additives were tested, and the experimental data were analyzed and processed, and the boundary film temperature characteristics of lubricating additives were obtained. The experimental results show that the test method designed in this paper can fully reflect the friction characteristics of the boundary lubricating film at various temperature points, and has a good resolution for various oil samples. The friction-temperature curve obtained by using the boundary film critical temperature test method can not only clearly reflect the critical temperature value of the initial failure of the boundary film, but also reflect the influence range of lubricating additives.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH117.2;TP274
本文编号：2255338
[Abstract]:Boundary lubrication is the most important form of lubrication in mechanical equipment, and adding various additives to lubricating oil is an important means to improve its boundary lubrication performance. Therefore, the research on the evaluation method of boundary lubricating film is of great significance for the rational selection and application of additives. According to the tribology principle, the problems of critical load method and critical velocity method as boundary lubricating film performance evaluation methods are deduced, and a new evaluation method, critical temperature method, is put forward. In order to verify the correctness of the evaluation method, the test method of boundary lubricating film temperature characteristic was studied, and the design and manufacture of the mechanical system of the testing machine was carried out according to the test requirements. A measurement and control system based on virtual instrument LabVIEW is developed according to the functional requirements of the boundary lubricating film temperature characteristic tester. It includes stepper motor control system, friction measurement system, temperature control system and data storage system. The boundary film temperature properties of various lubricating additives were tested, and the experimental data were analyzed and processed, and the boundary film temperature characteristics of lubricating additives were obtained. The experimental results show that the test method designed in this paper can fully reflect the friction characteristics of the boundary lubricating film at various temperature points, and has a good resolution for various oil samples. The friction-temperature curve obtained by using the boundary film critical temperature test method can not only clearly reflect the critical temperature value of the initial failure of the boundary film, but also reflect the influence range of lubricating additives.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH117.2;TP274
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