The quality requirements of hydraulic oil and the influence of high oil temperature - Lanzhou Liulian Kunrun Petrochemical Co., LTD-皇冠真人线上下载手机版

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The quality requirements of hydraulic oil and the influence caused by high oil temperature

Category: Industry information Release time: 2021-04-06 Author: Lanzhou Liulian Kunrun Petrochemical Co., LTD

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        The hydraulic system of vehicles and construction machinery equipment uses hydraulic oil as a working substance, and the water flow of hydraulic oil in this kind of hydraulic system is not large and the working pressure is high, so it is called negative pressure transmission system。The quality of hydraulic oil will harm the stability and service life of the hydraulic system on a very large level。Generally, the quality of hydraulic oil has the following aspects:
        1.Suitable viscosity and excellent viscosity temperature properties to ensure that the driving force will be accurately and dexterously transmitted under the conditions of operating temperature changes, and to ensure the normal lubrication of the hydraulic system。
        2.It has excellent anti-rust treatment, it is not easy to air oxidation and mildew under ultra-high pressure conditions, and the service life is long。
        3.It has excellent resistance to foam, so that the foam caused by the oil is easy to fade under the working conditions of continuous mixing by mechanical equipment, so that its driving force transmission is smooth and preventedHydraulic oilThe acceleration of air oxidation。
        4.Excellent emulsion resistance, can be quickly separated from the water in the oil, to produce emulsion oil resulting in the rust of metal materials in the hydraulic system and reduce the actual application effect。

5.Excellent fire resistance hydraulic oil resistance - wear to ensure that the hydraulic oil pump, oil motor, pressure regulator and hydraulic cylinder friction pair under high pressure, high speed harsh conditions to obtain normal lubrication, reduce damage。

Hydraulic oil quality

        In addition to the above basic quality regulations, there are also unique regulations for some hydraulic oils that can be specified with unique characteristics。Such as ultra-low temperatureHydraulic oil manufacturerIt is stipulated to have excellent ultra-low temperature application performance;Fire resistant hydraulic oil is provided with excellent fire resistance;Silver resistant hydraulic fluids can be used in hydraulic systems with silver components。High hydraulic oil temperature can also cause damage to the equipment。
        1.Hydraulic oil viscosity, capacity, efficiency and hydraulic system performance are reduced, leakage increases, and even industrial equipment can not work normally。
        2.The parts of the hydraulic system are swollen due to overtemperature，Destroyed the normal interfit gap of the relative velocity parts，Resulting in increased friction, the hydraulic solenoid valve is very easy to jam，另外，The grease film becomes soft and the mechanical equipment damage increases，As a result, the high precision mating surfaces of pumps, valves, motors, etc., are damaged too early and thus ineffective or damaged。
        3.Accelerate the embrittlement and mildew of rubber products, reduce the service life, and even lack its sealing characteristics, so that the hydraulic system is more serious leakage。
        4.Oil gasification, water volatilization, very easy to make the hydraulic components caused cavitation;The oxidation of the oil air produces a jelly deposit, which is easy to block the small round hole in the oil filter and the hydraulic solenoid valve, so that the hydraulic system can not work normally。
        Therefore, the high temperature of hydraulic oil seriously endangers the normal application of equipment, reduces the service life of hydraulic components, and increases the maintenance cost of construction machinery and equipment。

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The quality requirements of hydraulic oil and the influence caused by high oil temperature