铝板带轧制油中添加剂的综合评价与实验研究

在基础油中使用不同类型、不同含量的添加剂进行铝板带的冷轧工艺润滑与退火实验，获得了各种添加剂的轧制润滑特征曲线。并通过实验研究全面评价了铝轧制油中常用的脂肪酸、脂肪醇、脂肪酸酯等添加剂的性能，包括基本理化性能、油膜强度、轧制变形区摩擦系数、轧制压力及退火性能等，最终推荐了综合性能好的添加剂．其中：含有椰油醇的轧制油润滑作用效果最佳。实验结果还表明：添加剂的使用并非含量越高越好。上述评价实验结果为铝材轧制润滑正确选择添加剂提供了参考依据。     

Influence of surface roughness on normal-sliding lubrication

Contact between machine components can involve normal, sliding and rolling motion, either singly or in combination. Combined normal and sliding motion, which occur for example in the meshing of gear teeth and in heavily-loaded rolling elements, can present problems for lubrication. The purpose of the present experimental study was to investigate how surface roughness affects the lubricant film characteristics under conditions of combined normal and sliding motion. The experimental arrar gement consisted of a rotating roller which impacted a stationary ball in the presence of a lubricant. Under the same conditions of normal surface approach, increasing the surface roughness significantly decreased the level of roller sliding that could occur without breakdown of the lubricating film. This behaviour was similar to a step function. Of the several surface roughness parameters investigated, only those which involved the maximum peak-to-valley height correlated well with experimental results. In general, surface roughness had a greater effect on oil film breakdown than did either viscosity or load.     

A model of thick film lubrication by soaps in wire drawing using a pseudo-plastic rheological law

A model for wire drawing lubrication by soap using realistic soap rheology, plastic at low temperature, non-Newtonian viscous at high temperature, is presented. A simplified analysis of the lubricant flow gives film thickness as a function of soap rheology and drawing pass parameters, which is shown to agree with experiment     

聚四氟乙烯基粘结固体润滑涂层微动磨损性能研究

在不同位移幅值与载荷条件下研究了酚醛环氧粘结聚四氟乙烯(PTFE)基固体润滑涂层的微动磨损特性，并利用扫描电子显微镜、表面轮廓仪和傅里叶表面红外仪等对涂层磨斑进行分析。结果表明，粘结PTFE基涂层具有良好的抗微动损伤性能，随循环次数的变化只存在部分滑移区和滑移区，部分滑移区的损伤轻微，滑移区的损伤强烈依赖于栽荷，其损伤与PTFE分子链在往复交变载荷作用下的疲劳断裂相关。     

一种含硼润滑油添加剂的制备及摩擦学性能研究

利用气流粉碎和长时球磨相结合的方法，制备了一种稳定分散的含硼润滑油添加剂，并利用环块摩擦磨损试验机和四球试验机考察了其摩擦学性能，并对其减摩抗磨机理进行了分析。实验结果表明，该种润滑油添加剂可使润滑油的摩擦因数和摩擦副的磨损量大幅度下降，表现出优良的减摩抗磨性能。     

高速主轴及其润滑冷却形式

介绍了几种不同形式高速主轴的结构、工作特点,如：滚珠轴承高速主轴、静压轴承高速主轴和磁浮轴承高速主轴,并对高速主轴的几种冷却润滑方式进行了分析.     

Analysis of the dynamics of a slider-crank mechanism with hydrodynamic lubrication in the connecting rod-slider joint clearance

The conventional slider-connecting rod-crank mechanism is widely applied in mechanical systems. The use of hydrodynamic bearings in the mechanism joints is of particular interest in reducing friction, mainly in special conditions of lubrication such as the connecting rod-slider joint. This bearing belongs to a class of bearings with alternating rotational motion. This paper proposes a mathematical model for this particular problem, considering the dynamics of the slider-connecting rod-crank system interacting with the lubrication phenomenon in bearings with alternating motion. Two models were used to analyze the dynamics of the system. The first model (by Eksergian Equation of Motion) represents the system when the connecting rod end is in contact with the bearing surface, assuming, in this condition, the same behavior as that of rigid bearings (without clearance). The second model (by Lagrange Method) represents the system when the connecting rod end is in the hydrodynamic lubrication mode in the slider bore clearance. In this condition, the slider moves in relation to the connecting rod, presenting a problem of multi-degrees-of-freedom. The mathematic model of hydrodynamic lubrication was introduced to obtain more realistic results of the system's dynamic behavior.     

水润滑复合橡胶轴承的摩擦学特性试验研究

以自来水为润滑介质 ,用 MPV- 2 0 0型摩擦磨损试验机分别研究了载荷、速度、运行时间等对 30 mm× 5 0mm复合橡胶轴承的摩擦系数和磨损率的影响 ,结果表明 :在较高载荷和较低转速下 ,形成了水膜动压润滑 ,轴承的摩擦系数和磨损率都较低。对作用机理进行了系统的分析 ,为水润滑橡胶轴承的实际应用提供理论依据     

铝箔轧制润滑机理和速度效应的研究

从速度效应人手研究了一定条件下铝箔轧制变形区内润滑状态的变化。由轧制速度与油膜厚度、轧制速度与铝箔表面粗糙度以及油膜厚度与表面粗糙度的关系等三方面得出的结果具有良好的一致性。     

高速线材精轧机稀油润滑站技术改造

介绍了华西钢铁公司高线精轧机润滑系统的结构特点，同时分析了该系统存在的备用泵频繁启动、过滤器滤芯易损坏、供油温度过高等问题产生的原因。通过采取相应的改进措施，使问题得到了解决。