The quality of a hydraulic fittings system depends not only on the rational design and performance of the merits of system components, but also because of the pollution prevention and treatment system, the system of pollution affects the reliability of hydraulic fittings systems and components work life, according to statistics, the hydraulic fittings system failures at home and abroad about 70 percent is due to pollution caused.
Oil pollution of the system are several key harm, then we have to introduce, respectively.
Pollution and wear of hydraulic fittings, oil rise to devices of various pollutants in various forms of wear, solid particles into the kinematic pair gap, on the surface of the cutting parts wear or fatigue wear. High-speed flow of solid particles on the surface of components caused by erosion impact. Oil in the water and the resultant deterioration of oil oxidation on the corrosive elements. In addition, the system of oil in the air caused by cavitation, resulting in surface erosion and damage components.
Plug and the clamping device failure, solid particles to plug the gap and orifice of hydraulic fittings valves, causing valve obstruction and clamping affect work performance, or even result in serious accidents.
Accelerate the deterioration of oil properties, oil in water and air for its thermal energy are the main conditions of oil oxidation, while the oil in the oxidation of metal particles on the oil play an important catalytic role, in addition, oil in water and suspension significantly reduces air bubbles between the film's strength, deputy campaign to reduce the lubrication performance.
Oil pollution is a hydraulic fittings system on the system from the harmful effects of the substance, its oil in the form of a different form, can be divided according to their physical form: solid pollutants, liquid pollutants, gaseous pollutants.
Pollutants can be divided into hard solid contaminants are: diamond, cutting, silicon sand, dust, wear metals and metal oxides; soft contaminants are: additive, water, condensate, oil and polymer decomposition products and maintenance When the cotton into yarn, fiber.
Liquid contaminants usually do not meet the system requirements notch oil, water, paint, and halides such as chlorine and its often difficult for us to get rid of, so choice to select the line when the hydraulic fittings oil hydraulic fittings oil system standards, avoid some do not necessary failure.
Gaseous pollutants is mainly mixed with the air system.
These particles are often so small, so can not settle down while being suspended in oil, and finally pushed into the gap among the various valves, hydraulic fittings system on a reliable, these limited control over the achievement gap, importance and accuracy is extremely important.
Sources of pollutants: sources of contaminants in the oil system, mainly in the following way: the external intrusion of pollutants: the external intrusion of pollutants is mainly sand or dust in the atmosphere, usually through the tank holes, cylinder seal shaft , pumps and motors shaft penetrated the system. Mainly the use of the environment. Internal pollutants: components in the machining, assembly, testing, packaging, storage, transportation and installation of other sectors in the residual contaminants, of course, these processes can not be avoided, but can be reduced to a minimum, some special components in the assembly and debugging requires clean room or clean platform environment. Pollutants generated hydraulic fittings system: the system in operation due process component of the products of wear particles, falling down on the sand castings, pumps, valves and hydraulic fittings on the metal particles falling down, falling off things corroded pipeline in its oil oxidation and the decomposition of the particles and colloidal matter, even more serious is the system before the pipeline is put into operation without washing and some a lot of impurities.
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