The role and selection of hydraulic oil in hydraulic machinery

With the continuous development of the machinery industry, mechanical hydraulic oil is always indispensable, as such an important part of the operation of mechanical work, what is the specific role of hydraulic oil? How to choose and do daily maintenance work?

Under the premise of normal operation of mechanical hydraulic equipment, hydraulic oil maintenance work, the staff need to ensure that the hydraulic oil is used at medium and low temperatures, because the hydraulic oil will soon oxidize and deteriorate at high temperatures, thereby losing the original effect. The air filter on the hydraulic station should adopt a filter that can filter both particles and water. For the oil station with water, vacuum dehydration or centrifugal dehydration should be adopted. If it is well controlled, the service time can be greatly extended, for example, MOBIL, SHELL, etc.

Before the mechanical operation, but also do a good job of sealing work to prevent air into the oil, oil suction seal work must be good, the oil tank suction pipe can not be too close to the oil surface, the highest point of the system should be set up an exhaust valve to release the free air in the oil. At the same time, precision filter element should be used to filter hydraulic oil, so that the pollution degree of oil products is maintained at NAS&lt for a long time; Level 8, the filter element of the equipment is generally too poor to ensure the cleanliness of the hydraulic oil. Because the dirty limit of the hydraulic station is only 5um, and the accuracy of the built-in filter element is often greater than this size, the scientific regulation of the pollution level of the general hydraulic station is controlled at NAS less than 8; For devices with servomechanism requirements are higher, less than 7 level.

Hydraulic oil is the task medium that transmits energy to each other in the transmission fragment and the control fragment, and also has the function of smoothing, cooling and rust prevention in the whole hydraulic fragment. Its job is to transfer energy in a confined space. In mechanical engineering, its application is very important and common. Such as a variety of mechanical machine tools, automotive transmission, engineering machinery, agricultural machinery, aerospace and other aspects.

Choose hydraulic oil according to hydraulic oil use environment and engineering environmental conditions. When selecting the hydraulic oil used in hydraulic engineering equipment, it should be comprehensively considered, such as temperature, environment, hydraulic system, working strength and component material, economy and so on. Environmental factors are: cold area, high temperature, open flame and so on. Engineering environment: type of pump, sealing material, working time. Oil properties: physical and chemical properties. Economy: use time, oil change period, price.

Bow type hydraulic press