Hydraulic oil maintenance work (the prerequisite is the normal operation of the equipment, no abnormal conditions)

    1.确保Hydraulic oilNo application at high temperature;The refined oil will quickly become mildewed by air oxidation at high temperature。

    2.The gas filter on the hydraulic system should choose a filter that can filter both particulate matter and water。

    3.选用高精密滤芯过滤Hydraulic oil，使成品油的环境污染度始终保持在NAS<8级，设备内置的滤芯通常情况下精度很差，不可以确保Hydraulic oil的洁净度等级。Because the hydraulic system's dirty limit is only 5um, and the accuracy of the built-in filter element is usually more than this specification, scientific research requires that the environmental pollution of the hydraulic system is usually operated at NAS level below 8;For the equipment with servomechanism, the requirement is higher, less than 7 level。If you have ever repaired a hydraulic valve, then you know everything, why the environmental pollution of hydraulic oil has to be so high。Try to buy a high-precision vacuum oil filter to carry out online filtration, and some filter elements have already achieved 0 accuracy.1um。

    4.Centrifugal dewatering/vacuum pump dewatering (for filling stations with water),As long as it is operated well, it can usually be used for 5 years, such as MOBIL, SHELL, etc。

    5.Do the oil test on time, the main use of hydraulic oil is common, is the industrial production of edible oil in the application of more products。Today's hydraulic system is developing in the direction of small size and output power, and the working pressure of the system software is getting higher and higher, and some have been increased by 50MPa。Therefore, the general L-HL series products have long tended to replace,Anti-wear hydraulic oilA large number of series products are used。The ultra-low temperature characteristic is also the key characteristic of hydraulic oil，It is very easy to provide equipment operation in ultra-low temperature natural environment，And the driving force transmission system dexterous，And the hydraulic oil change cycle time is longer，For example, outdoor equipment is usually replaced once a year，Hydraulic oil in the whole process of application is difficult to avoid the change of four seasons，Therefore, the actual effect of outdoor equipment with low condensation products is good。Cleanliness has also become the characteristics of hydraulic oil regulations, under normal circumstances, the product to NAS particle level is not more than 9, cleaning products are not more than 7, and high cleaning products are not more than 5, but blindly follow the trend of pursuing the NAS level not only does not have any practical effect, but also reduces the quality and increases the cost。For example, there are some machinery manufacturers，Or construction machinery and equipment customers do not have a purification workshop for adding hydraulic oil，Even if you spend a lot of money to buy NAS5 grade products，At the moment of opening the product，The high cleaning NAS5 hydraulic oil becomes NAS8 grade，And the high NAS level of hydraulic oil means that the filtration frequency is high，Expensive additives are filtered out during the filtration process，So from a technical professional point of view，The NAS level does not require excessive pursuit。

    6.Avoid gas into the oil, gasoline pump suction port should be sealed reliable, ultra-low temperature hydraulic oil tank suction pipe can not be too close to the oil level, the high point of the system software should be set up automatic exhaust valve, release the dispersed gas in the oil。

    7.The rational design scheme of the car oil tank, the suction pipeline should avoid the return pipeline, prevent the application of lead, zinc, copper and other raw materials such as catalytic oxidation of the air of the oil, the car oil tank needs to be coated with acid and alkali resistant anti-corrosion paint, and the cooling tower in the car oil tank can not bleed water。