How is the water in the hydraulic system mixed in? What are the hazards? What are the solutions?
(1) Ways for water to enter the hydraulic system
1 mechanical failure, if the seal is not good, the cooling coil leaks water into the oil;
2 In the hot and humid climate, the fuel tank breathes and brings in;
3 The working environment is humid, underground, water, rain, snow and ice melt water pollution.
(2) Hazard of water to hydraulic system
1 It can react with hydraulic oil to form acid, colloid and sludge, and water can also precipitate additives in oil;
2 The most important effect of water is to reduce the lubricity. Traces of water dissolved in hydraulic oil can accelerate the wear of high-stress components. The study of the fatigue life of only mineral water-oiled rolling bearings shows that the bearing life is reduced by 30%-70%.
3 Water can cause the control valve to stick and cause cavitation damage at the pump inlet or other low pressure parts;
4 corrosion, rusty metal.
(3) The solution
1 Strengthen the monitoring of water content in oil;
2 hydraulic equipment for outdoor use, it is best to use the anti-tank breathing hole mounted dryer;
3 Conditional systems can be fitted with "Super Absorbent" dry filters.
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