Maintenance of hydraulic system--Shenzhen Wonpro Technology Co., Ltd.

The quality of a hydraulic system depends not only on the rationality of the system design and the performance of the system components, but also on the pollution protection and treatment of the system. The pollution of the system directly affects the reliability of the hydraulic system operation and the service life of the components. According to statistics, about 70% of hydraulic system failures at home and abroad are caused by pollution.

The hazards of folding oil contamination to the system are mainly as follows

1) Pollution and wear of components

The function of a hydraulic system is to increase the applied force by changing the pressure. A complete hydraulic system consists of five parts, namely power components, actuating components, control components, auxiliary components (accessories), and hydraulic oil. Hydraulic systems can be divided into two categories: hydraulic transmission systems and hydraulic control systems. The hydraulic transmission system has the main function of transmitting power and motion. The hydraulic control system needs to ensure that the output of the hydraulic system meets specific performance requirements (especially dynamic performance), and the hydraulic system usually refers to the hydraulic transmission system.

Various pollutants in the oil cause various forms of wear on the components, and solid particles enter the clearance of the moving pair, causing cutting wear or fatigue wear on the surface of the parts. Solid particles in high-speed liquid flow cause erosion and wear on the surface of components. The water in the oil and the products of oil oxidation and deterioration have a corrosive effect on the components. In addition, air in the system's oil causes cavitation, leading to surface erosion and damage of components.

2) Component blockage and clamping failure

Solid particles block the gaps and openings of hydraulic valves, causing valve core blockage and clamping, affecting work performance, and even leading to serious accidents.

3) Accelerate the deterioration of oil performance

The water and air in the oil are the main conditions for oil oxidation due to their thermal energy, and the metal particles in the oil play an important catalytic role in the oxidation of the oil. In addition, the water and suspended bubbles in the oil significantly reduce the strength of the oil film between the moving pairs, resulting in a decrease in lubrication performance.