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液压混凝土泵在日常使用过程中,常因液压油使用不当或更换不及时会出现液压系统过热（即启动冷却系统）、泄漏、堵孔、液压元件损坏、臂架自动下落等问题。1 混凝土泵液压系统对液压油的一般要求 液压油既是传动的工作介质,又是液压元件的润滑剂。由于液压系统的压力、流量和温度等参数,经常在比较大的范围内变化。为了保证工作状态的稳定,要求所用的液压油能适应这些变化。具有适当的粘度,良好的粘温性能、润滑性能和足够的油膜强度;热膨胀系数低、比热高、导热系数高、闪燃点高;能长期保持稳定的性能;不含水溶性酸和碱等杂质。
Hydraulic concrete pump in daily use process, often due to improper use of hydraulic oil or replacement is not timely there will be hydraulic system overheating (ie start the cooling system), leakage, plugging, hydraulic components damaged, the boom automatically drop and so on. 1 concrete pump hydraulic system of the general requirements for hydraulic oil hydraulic oil is not only the working medium for transmission, but also the hydraulic components of the lubricant. Due to hydraulic system pressure, flow and temperature and other parameters, often in a wide range of changes. In order to ensure the stability of the working conditions, the hydraulic oil required to adapt to these changes. With proper viscosity, good viscosity-temperature performance, lubricity and sufficient oil film strength; low coefficient of thermal expansion, high specific heat, high thermal conductivity, high flash point; long-term stability; no water-soluble acid and alkali impurities .