设备润滑与油液监测资料.pptVIP

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Lubricating greases are thickened mineral or synthetic oils, the thickeners usually being metallic soaps. It’s not simply thick oil, or a solid wax. If you look at a grease under the microscope, the thickener structure looks like a sponge or mesh. The thickener can release minute amounts of oil to lubricate the bearing contacts (oil ‘bleeding), and can even take the oil up again. This is one main advantage of a grease over oil – it acts as a reservoir over a long period of time. ? Additives can also be included to enhance certain properties of the grease. The consistency of the grease depends largely on the type and concentration of the thickener used. When selecting a grease, the viscosity of the base oil, the consistency, operating temperature range, rust inhibiting properties and the load carrying ability are the most important factors to be considered. * * * * ?Most bearing applications use greases of NLGI grades 1, 2 or 3. The majority of bearing applications use NLGI grade 2. In some cases, provision is made in the application for separate greasing of the bearings and seals, which may require different grades, if not entirely different types, of greases. Grades 0, 00, and 000 are used in splash applications where the components are wetted during running. The low-consistency grease remains present on the splashed surfaces longer than oil would in the same application. Grease grades 4-6 are used where additional contaminant exclusion is required. * * * * * * * 润滑脂的主要质量指标 锥入度、滴点 、蒸发性、氧化安定性、胶体安定性、水分、机械杂质、抗腐蚀性等。  设备润滑状态 异常 停机警告 维修决策 油液监测 设备磨损状态 润滑油分 析 磨损颗粒成分与形貌分析 设备运转的 真实状态 正常 定期 注 意 警 告 强化方案 基础油 添加剂变化 表观、本质变化 磨损金属 污染金属 添加剂 油品常规理化分析 油品质量 合理选油 按质换油 设备润滑状态分析 污染度 测试 液压系统 其它系统 红外光谱 发射光谱 直读铁谱 分析铁谱 旋转铁谱 磨损方式 磨损类型 磨粒识别 设备磨损状态分析 直读铁谱 分析铁谱 滤膜分析 计算机数据处理系统 专家经验 监测数据 综合结论 分析判断 监测报告 反馈信息 用 户 PQ指数 磨损金属 总磨损值 红外光谱图 发射光谱趋势图 铁谱照