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1.使用的液压油不侵蚀机件及破坏密封装置,即油中不含有水溶性酸及碱类成分。2.在工作温度和压力下,具有优良的润滑性、剪切稳定性和一定的油膜强度。3.尽量减少油中的杂质,不允许有沉淀,以免磨损机件、堵塞管道及液压部件,影响系统正常工作。4.使用的液压油应具有适宜的粘度和良好的粘温特性。在工作温度变化范围内粘度变化为最小,粘度太大、阻力大,磨损增加、灵敏度降低;粘度太小,泄漏严重、功率损失增加。液体的粘度随液体温度和压力的变化而变化。压
1 hydraulic oil does not erode parts and seal damage, that is, the oil does not contain water-soluble acid and alkali components. 2 in the working temperature and pressure, with excellent lubricity, shear stability and a certain film strength. 3. Minimize impurities in the oil, do not allow precipitation, so as not to wear parts, plug the pipes and hydraulic components, affecting the normal work of the system. 4. The hydraulic oil used should have the appropriate viscosity and good viscosity-temperature properties. In the range of working temperature changes in the viscosity of the smallest, too viscous, resistance, abrasion increases, the sensitivity decreases; viscosity is too small, serious leakage, power loss increases. The viscosity of a liquid varies with the temperature and pressure of the liquid. Pressure