foreword
There are various pollutants in the hydraulic system medium, the most important of which are solid particles, in addition, there are water, air, and harmful chemicals. The main sources of pollutants are as follows.
1. Inherent pollution
Unavoidable residues of contamination during manufacturing and assembly, such as swarf, welding slag, molding sand, paint, sealants or fibers from rags, etc. If the system is not flushed before use, contaminants can enter the fluid while the hydraulic system is working.
2. Invasive pollution
Systems are always under taint attack, unfortunately, systems cannot avoid intrusion taint. External air, water, dust, and solid particles enter the oil through hydraulic cylinder piston rods, hose joints, hydraulic oil tanks, and air filters during the working process of the hydraulic system.
3. Internally generated pollutants
The assembly, operation, commissioning and deterioration of the hydraulic system also continuously produce pollution, which directly enters the oil, such as wear particles of metal and sealing materials, particles and fibers shed from the oil suction and oil return filter elements. Oxidation and deterioration to form jelly, and the oil suction pipeline is not tightly sealed to inhale air, etc.
4. Pollution caused by maintenance, maintenance and repair
In the normal maintenance of equipment, replacing filter elements and hydraulic oil, cleaning oil tanks, repairing and disassembling hydraulic cylinders, valves, etc. will also cause solid particles, water, air, fibers, etc. to enter the oil, affecting the cleanliness of the system, even if these Processes cannot be avoided, but effective filtration can have a significant impact on these processes.
5. Catalytic effect
In the process of selecting filters, the removal of solid and hard pollutants is usually considered, but the performance of hydraulic and lubricating oils is also affected by catalysts, and the life of the oil is greatly shortened as a result of catalysis.
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Foshan Nanhai Dongxu Hydraulic Machinery Co., Ltd. has three subsidiaries: Jiangsu Helike Fluid Technology Co., Ltd., Guangdong Kaidun Fluid Transmission Co., Ltd., and Guangdong Bokade Radiator Material Co., Ltd.
The holding company of Foshan Nanhai Dongxu Hydraulic Machinery Co., Ltd.: Ningbo Fenghua No. 3 Hydraulic Parts Factory, etc.
Foshan Nanhai Dongxu Hydraulic Machinery Co., Ltd.
&Jiangsu Helike Fluid Technology Co., Ltd.
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Post time: Mar-22-2023