Hydraulic filter is an indispensable component in the hydraulic system, its main function is to filter impurities in the hydraulic system, protect the hydraulic components from pollution and damage. Understanding the source of impurities in hydraulic filters is essential to better maintain the hydraulic system, extend its service life and ensure its working efficiency. The following will be a detailed analysis of the various possible sources of impurities in hydraulic filters:
1. Residual mechanical impurities
(1) Residue after cleaning: In the process of manufacturing, installation or maintenance of the hydraulic system, there may be impurities such as rust, casting sand, welding slag, iron filings, coatings, paint skins and cotton yarn shavings.
(2) External intrusion: through the refueling port, dust ring and other ways, dust and other small particles may enter the hydraulic system.
2. Generated during work
(1) Wear: The moving parts in the hydraulic system will wear in relative motion, resulting in impurities such as metal powder.
(2) Oil deterioration: hydraulic oil may deteriorate during use due to oxidation, high temperature and other factors, resulting in gum, asphaltene, carbon slag and so on.
3. Oil chemical reaction hydraulic filters
Chemical action: The hydraulic oil may react chemically with certain materials in the system to form new impurity particles.
4. Seal wear of hydraulic filters
Seal fragments: Seals may form fragments after long-term hydraulic action, and these fragments will be mixed with hydraulic oil.
5. The orifice is blocked
Blockage formation: Blockage in small holes and gaps, such as rust, sand, etc., is also a form of impurities, which may lead to hydraulic system failure.
6. External pollution of hydraulic filters
Environmental pollution: dust and moisture in the operating environment of the hydraulic system may also become a source of pollution.
7. Improper maintenance
Maintenance introduction: Irregular maintenance operations may introduce new impurities, such as using unclean tools or not paying attention to cleaning.
8. The filter itself
Filter material: The material of the filter may also decompose or corrode after long-term use, forming impurities.