Hydraulic oil pressure cylinder for gas-liquid products for the working medium from the role of energy transmission and conversion, but also plays a pressurized liquid between the various parts of equipment lubrication, corrosion, cooling, washing and so on. Its main properties are: 1, the appropriate viscosity, good viscosity-temperature characteristics of hydraulic oil when the viscosity is to choose the first consideration, in the same working pressure, the viscosity is too high, the resistance movement of hydraulic components to increase the pipeline pressure drop and power loss increases; if the viscosity is too low, the loss will increase the volume of oil drums, components, internal leakage increases, and to thin film sliding components, bearing capacity decreased, and a fog phenomenon, from the exhaust overflow. 2, good lubricity (wear resistance) the hydraulic system has a lot of moving parts need lubrication to prevent the relative movement of the surface of the wear and tear, especially the high pressure hydraulic equipment, hydraulic oil is much higher abrasion resistance requirements. 3, good oxidation resistance hydraulic fluid also occurs in the course of oxidation, after oxidation of the hydraulic oil will increase the acid produced by the corrosion of metals, the resulting sludge sediment can clog filters and tiny cracks, so that liquid pressurized cylinder not working properly, it requires a good antioxidant activity. 4, good qualitative shear Cean hydraulic oil through the barrel, and the gap when the throttle valve to withstand the intense shearing, resulting in some of the oil molecules in the polymer molecules, such as tackifier broken into small molecules, so that the viscosity decreases when the viscosity of the oil down to a certain extent can not be used, so requires a good shear resistance. 5, good anti-rust and corrosion of hydraulic oil in the course inevitably contact with water and air and produce acid oxidation of the metal to rust and corrosion will affect the pressurized liquid product to work, for a long time pressurized liquid forces the company's products are generally used in hydraulic fluid replaced every six months. 6, good anti-foam and air release oil conversion in the empty bucket, the air bubbles mixed with the oil in the oil circulation system pressure will not only reduce deterioration of lubrication, but also generate abnormal noise, vibration, In addition the oil bubble has also increased the area of contact with air to accelerate the oil oxidation, thus requiring the hydraulic oil has a good anti-foam and air release.
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