What are the main monitoring items for lubricating oil? What does it do?
Lubricating oil, as an indispensable liquid or semi-solid lubricant in mechanical equipment, is of great significance for ensuring the normal operation of equipment and extending the service life. In order to ensure the quality and performance of lubricating oil, it is necessary to carry out regular monitoring. This article will introduce the main monitoring items of lubricating oil and their functions in detail to help readers better understand and apply lubricating oil.
First of all, viscosity is one of the most critical items in lubricating oil monitoring. Viscosity is a measure of the friction force within the flow of a fluid, which reflects the ability of a lubricating oil to resist flow at a specific temperature. The size of viscosity directly affects the lubrication effect and the stability of equipment operation. Therefore, by monitoring the viscosity of the lubricating oil, it can be determined whether it meets the requirements of the equipment and whether it needs to be replaced or adjusted.
Secondly, moisture content is also an item that cannot be ignored in lubricating oil monitoring. Moisture will destroy the oil film, reduce lubricity, and increase the wear of the friction parts of the equipment. At the same time, the water will also react with some components of the oil, forming acids, glia and sludge, further affecting the performance of the lubricant. Therefore, regular monitoring of the moisture content in the lubricating oil helps to discover and deal with potential problems in time to ensure the normal operation of the equipment.
In addition to viscosity and moisture content, total acid value is also an important indicator in lubricating oil monitoring. The total acid number reflects the amount of acidic components in the lubricating oil, which may cause corrosion and rust to the equipment. By monitoring the total acid value, it can be determined whether the lubricating oil has undergone adverse changes such as oxidation or acidification, so that timely measures can be taken to avoid equipment damage.
In addition, pollution analysis is also an important part of lubricating oil monitoring. The pollution degree mainly reflects the number and type of solid particles in the lubricating oil, which may come from equipment wear, external impurities and so on. The presence of solid particles will aggravate the wear and failure rate of the equipment, so the cleanliness of the lubricating oil can be understood through the pollution degree analysis, and the pollution source can be found and treated in time.
Spectral element analysis is another important method of lubricating oil monitoring. Through spectral analysis, the concentration of wear metals, polluting elements and additive elements in the oil can be detected. This information helps to determine the wear condition of the equipment, the consumption of additives and possible pollution sources, and provides strong support for the maintenance and maintenance of the equipment.
Ferrographic wear analysis is also an effective monitoring method for equipment wear. Through the analysis of iron spectrum in lubricating oil, the characteristics of abnormal wear particles can be determined, so as to determine the wear position and wear degree of equipment. This is of great significance for timely detection and resolution of equipment failures and prevention of major accidents.
Finally, PQ index is another important index in lubricating oil monitoring. The PQ index reflects the oxidation stability and thermal aging resistance of lubricating oil. By monitoring the changes in the PQ index, the service life and replacement cycle of the lubricating oil can be predicted to ensure that the equipment operates under good lubrication conditions.
In summary, the monitoring items of lubricating oil cover viscosity, moisture content, total acid value, pollution degree analysis, spectral element analysis, ferrographic wear analysis and PQ index. These monitoring projects not only help to understand the performance and quality status of the lubricant, but also provide strong support for the maintenance and maintenance of the equipment. Therefore, in practical applications, attention should be paid to the monitoring of lubricating oil to ensure the normal operation of the equipment and extend the service life.
