Views: 268 Author: Site Editor Publish Time: 2021-09-08 Origin: Site
With the development of hydraulic technology, we have higher and higher requirements for hydraulic fluids. The performance of the base oil is far from satisfying the requirements of the hydraulic transmission power system, so it must be improved by adding various additives.
At present, almost all the hydraulic fluids used in the hydraulic mechanical transmission contain various functional additives. There are two kinds of additives in hydraulic oil: one is to improve the physical properties of oil, and the other is to improve the chemical properties of oil.
Oiliness agent is a kind of substance with strong polarity, it can adsorb with metal surface under low temperature and pressure, thus forming a firm adsorption film through hydraulic nipple fittings. It can effectively prevent direct contact between metals, improve oil film strength, and reduce metal friction and wear, protecting hydraulic hoses and fittings.
Under high friction temperature, the decomposition products of antibacterial agents will react with the metal surface, producing compound films with low shear stress and low melting point to prevent the bite or welding of the contact surface. It produces plastic deformation, fill the uneven part between the friction surface, so that the contact surface increase, pressure reduction, wear reduction in the automatic transmission hydraulic system.
Viscosifier is a kind of additive to improve the viscosity index and is a kind of high polymer. At low temperature, it contracts and curls into a compact ball in the oil, which has little influence on the viscosity at low temperature. At high temperatures, it expands in oil, increasing viscosity.
Anti-foam agent is a kind of material which can reduce the stability of foam adsorption film and shorten the existence time of foam agent. By adding anti-bubble additive through one piece hydraulic hose fitting to hydraulic fluid, we can reduce the surface tension and make the bubbles quickly escape from the oil surface, so as to eliminate the bubbles.
Depressant is a kind of additive that can inhibit the formation of paraffin network crystals in oil to reduce the freezing point and maintain the fluidity of oil. By means of adsorption or eutectic formation on the surface of paraffin crystals, the crystal shape and size of paraffin are changed to reduce the condensation point of oil products.
Antioxidant is a kind of additive that is easy to be oxidized by itself, adding in the KHP Hydraulic Ball Valve. It can generate complex film on the metal surface to isolate the contact with oxygen and other corrosive substances and prevent the catalytic effect of metal on oil oxidation and oil on metal corrosion.
Antirust agent is a kind of polar compound, which can form a strong growth adsorption film on the metal surface to prevent metal rust.
Antifungal agent can prevent and inhibit the formation of mold in emulsified oil.
Demulsifier is a kind of substance that can separate or settle water and oil well.
Metal passivators are additives that protect nonferrous metals, especially copper, from surface corrosion. This additive can also increase the oxidation resistance of oil products and inhibit and passivate the corrosion of acidic materials to copper.
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