磨损间隙调整式环块摩擦试验机的研制

为了优选橡胶材料和掌握其摩擦磨损机制,以提高橡胶衬套材料的耐磨性和液体介质输送设备的使用寿命,研制一台磨损间隙调整式环块摩擦试验机。该试验机可通过加载机构可实现对橡胶试块的垂直加载或橡胶试块与摩擦环之间的间隙调整,并可实现干摩擦和含固体颗粒黏稠液体介质润滑下金属摩擦环与橡胶之间的摩擦磨损试验。利用该试验机对丁腈橡胶在不同磨损间隙下的摩擦磨损性能进行测试。试验结果表明,该试验机在过盈配合及不同磨损间隙下均具有较高的试验精度。     

往复式摩擦磨损试验机及其计算机控制系统设计

针对不同固体材料在不同条件下的摩擦磨损实验要求,开发设计了一种往复式摩擦磨损试验机,通过测量实验中产生的摩擦力、摩擦系数和磨损量的变化来研究材料的摩擦磨损性能。为提高测试系统的精确性和实时性,将计算机辅助测试系统应用到摩擦学试验当中,通过数据采集系统和测试软件系统完成摩擦磨损数据的实时动态测试,从根本上改变了传统摩擦磨损试验机的缺点。通过对聚四氟乙烯材料的摩擦磨损性能进行实验,证明该试验机性能稳定,测试系统准确可靠。     

高速摩擦磨损试验机的研制

为研究枢轴宝石轴承的摩擦磨损特性,设计并研制了一种高速摩擦磨损试验机.介绍了该试验机的工作原理、结构特点,关键部件的设计思想及实现方法,并利用此试验机进行了初步试验分析.     

MM-W1B立式万能摩擦磨损试验机双显双控系统的研发

MM-W1B立式万能摩擦磨损试验机是济南时代试金试验机有限公司摩擦磨损研发部最新研制的一种全部电气自主知识产权的高端摩擦磨损试验机,该系统响应快,控制精度高,集机械、电子、微机控制于一体,外观新颖,功能齐全.本文介绍了如何用ARM微电子技术和PC计算机数据处理技术对MM-W1B立式万能摩擦磨损试验机实现数据采集与双显双控,使该试验机测控技术达到一个新的高度.     

基于虚拟仪器技术的多功能摩擦磨损试验机的研制

摩擦磨损试验机是摩擦学研究必不可少的重要试验工具,但目前大多摩擦磨损试验机功能简单、工况参数不可控或可控性不好。阐述多功能摩擦磨损试验机的研制和其主要功能特点。试验机采用交流伺服技术直接驱动,速度闭环可控;静载荷通过压缩加载弹簧实现,使用可控激振器进行动载荷加载,加载操作简单易控;由润滑油泵控制润滑液的添加。这些参数由计算机实现自动控制,能很好地模拟实际工况。测控系统软件在虚拟仪器技术基础上采用Lab-VIEW平台开发,实现对数据的自动实时采集、处理和结果显示等功能。试验证明该试验机能很好地模拟实际工况,满足多种摩擦学研究需要。     

端面接触摩擦磨损试验机的研制

为了研究直升机发动机齿轮的端面垫片的摩擦特性,选择优质的材料和改性方法,研制了一台端面接触摩擦磨损试验机.文中介绍了试验机的设计思想、工作原理和结构特点.该试验机可在一定范围内实行载荷、速度控制,利用虚拟测试软件LabVIEW建立友好的虚拟仪器面板,可完成对摩擦力数据的采集、动态曲线显示及数据保存,该试验机且可以通过修改夹具来实现多功能实验.     

多功能集成摩擦磨损试验机智能测控系统

针对目前大多数摩擦磨损试验机运动形式单一、环境因素不可控的缺点,开发了一种多功能集成摩擦磨损试验机及其智能测控系统.该智能测控系统以工控机为核心,集数据采集、数据处理和实验环境控制为一体,实现了温度、湿度、载荷、摩擦力、线速度和摩擦因数等参数的实时检测.该试验机可更好地模拟现实工况条件,可开展多种环境因素、多种运动方式下的摩擦学实验研究.     

柴油机缸套-活塞环摩擦磨损试验机设计及功能验证

设计并搭建TCLPR-1缸套-活塞环摩擦磨损试验机,进行两组工况相同的试验,实时采集试验过程中缸压、缸套温度、缸套-活塞环间油膜接触电阻、平均摩擦力、曲轴转速等信息,分析缸套-活塞环摩擦副的运动情况。结果表明:缸套-活塞环在本试验机的运行工况与实际相吻合,可通过本试验机对缸套-活塞环进行摩擦磨损试验研究。     

基于UHMWPE基复合材料摩擦性能研究试验机的设计

基于UHMWPE基复合材料在特殊条件下摩擦磨损性能设计了一台摩擦磨损试验机.试验机主要包括电气控制、数据采集和机械装置3部分.系统结构紧凑,操作方便,克服了传统摩擦磨损试验机体积大、质量大、成本高、试件结构尺寸单一的缺点,同时可研究UHMWPE基复合材料在摩擦条件下的温度场变化规律.摩擦试验结果表明:试验机运转稳定,数据检测方便.     

双工位往复式衬垫摩擦磨损试验机

介绍了自主研发的一种用于自润滑衬垫在不同试验条件下的双工位往复式摩擦磨损试验机,通过测量试验过程中产生的摩擦力、摩擦系数和磨损量的变化来研究衬垫的摩擦磨损性能。通过对2种不同织物型自润滑衬垫的摩擦磨损性能试验,证明该试验机性能稳定,测试系统准确可靠。     

Effects of moisture adsorption on laboratory wear measurements of brake friction materials

As is the case for tribological systems in general, the wear of brake friction materials, sliding against brake discs or drums, is influenced by many factors. This dependency requires very complicated test matrices in order to characterize the range of lining wear properties. Furthermore, the wear rate is very low under normal operating conditions, and thus a substantial amount of test time is needed before the wear progresses to reach a measurable amount. One way to reduce the test time is to use small brake material samples and to measure their weight change with an accurate electronic balance. A laboratory-scale, block-on-disc brake testing machine was used to measure the wear rate of two brake friction materials against cast iron. While conducting these tests, the lining specimen weight changes caused by moisture adsorption were found to be similar in magnitude to the weight change caused by wear. These effects were studied using weight change experiments with both desiccants and heating. Gravimetric methods for wear measurement in porous materials like brake linings are problematic. Several alternatives are offered for mitigating this problem.     

Simple reciprocating fraction and wear tester

This paper describes a simple and accurate friction and wear bench machine which can also be used for fatigue testing. It consists of a variable-speed drive unit with built-in loading and friction head which reciprocates within a framework containing the test surface. Sample loading is pneumatic or by gravity and both the speed and stroke of the motion are variable. The machine may be used to evaluate the friction and/or fatigue performance of rubber-like materials.     

显微观察手段在机械摩擦磨损研究中的应用

选择机械零件常用的材料作为试样,在M-200型磨损试验机上对试样进行摩擦磨损试验。试验后对试样进行一系列处理后,用L2003A型金相显微系统和S-570型扫描电镜仪对试样进行金相组织观察和表面扫描,从而研究材料的磨损和显微表面变化的机理。试验结果表明：试样表面有颗粒脱落,某些试样表面有微小固相焊合点,磨损恶劣部位表面的金相组织发生变化;试样摩擦磨损后的表面形貌大部分主要表现为摩擦磨损造成的划痕和擦伤。     

Friction machine for testing materials under boundary lubrication

The design of a pin-on-disk friction machine intended for the testing materials under boundary lubrication has been considered. Engineering solutions involved in the development of the machine that are used to provide the precision of the adjustment of friction surfaces of specimens with regard to the counterface and to retain stable thermal conditions in the zone of contact at any duration of the test have been described. The machine is intended for carrying out wear tests of materials and coatings under various conditions, including conditions that correspond to the operation of shut-off valves of oil pipelines.     

System18牙科支架合金在人工唾液下的微动磨损性能研究

为研究牙科支架合金的微动磨损性能,采用PLINT高精度液压伺服式微动磨损试验机,在法向载荷50N、频率2Hz、位移幅值3-30μm,在大气和人工唾液2种介质条件下,对System18牙科合金进行了微动磨损实验。分析了其微动磨损的动力学特性,并结合光镜（OM）、扫描电子显微镜（SEM）对磨痕及磨屑的成分进行了分析。结果表明：人工唾液对微动运行区域有明显改变;人工唾液明显减轻了System18牙科合金的微动损伤;其主要磨损机制为磨粒磨损和剥层磨损。     

受制滚动钢摩擦副的摩擦特性研究

利用往返滚动运动的试验装置,试验研究了滚动摩擦特性。研究表明:受制滚动中,随着滚动阻力增加,物体发生滚动时的预位移量也在增大;滚动物体从静止到运动的过程中,摩擦因数是变化的。摩擦因数的变化与接触表面的磨损过程是相关的;表面磨损类型的不同对表面摩擦因数有较大的影响。     

On the influence of surface finish of SSiC on the results of tribological laboratory tests in the case of water lubricated oscillating sliding

The development of materials for tribological applications requires characterisation of their friction and wear behaviour. This characterisation is often based on tribological model testing, working with simple shaped specimens, running under well-defined conditions. Discrepancies in test results may arise from the fact that non-standard tests with different sets of operational parameters are used. An essential starting point for the development of tribological standards is knowledge of the main parameters that influence the tribological properties. One aspect that is not often adequately taken into account is the surface finish of the test specimens. Results are presented of friction and wear tests with self-mated SSiC couples (ball on disc), running in water in an oscillating sliding mode. The surfaces of the disc were ground, lapped, or polished, respectively, running against a polished ball. For certain test conditions, the influence of the surface finish on wear is found to be negligible, while for other conditions, the wear rate can differ by one order of magnitude or even more. The consequences for the standardisation of wear tests of ceramic materials are discussed.     

几种人字门底枢材料的摩擦磨损性能研究

通过摩擦磨损试验和摆动试验对比考察了几种人字门底枢材料在水润滑和脂润滑条件下摩擦磨损性能，并进行摩擦磨损机制分析，选出一种综合性能较好的材料，进行一些机械性能的测试，为下一步台架模拟试验作准备。研究表明：一种新材料FZ5（3）在摩擦磨损试验和摆动试验中都表现出优异的性能，通过硬度测量、拉伸性能等试验表明其具有优良的机械性能。