Quantitative analysis method for iron particles and organic iron in lubricating oil in use

Abstract

The invention discloses a quantitative analysis method for iron particles and organic iron in lubricating oil in use. The method comprises the following steps: firstly, measuring the total concentration of an iron element in an oil sample with an oil spectrum analyzer; secondly, separating solid particles from the oil sample with a centrifugal machine; thirdly, subjecting the solid particles to filtration by a filter membrane with the aperture of 0.45 micrometer; and measuring the concentration of an organic iron element in the oil sample with the oil spectrum analyzer, wherein the differencevalue between the total concentration of the iron element and the concentration of the organic iron element in the oil sample is the concentration of the iron particles. The method can quantitativelydifferentiate the concentration of the iron particles and the organic iron in the lubricating oil in use, provides targeted treatment measures according to the concentration of the iron particles in the lubricating oil, and ensures the normal operation of mechanical equipment.

Description

technical field [0001] The invention relates to a method for analyzing components of lubricating oil in use, in particular to a method for quantitatively analyzing iron particles and organic iron in lubricating oil in use. Background technique [0002] Lubricating oil is widely used in mechanical equipment. The iron element in lubricating oil generally has two forms: one is iron element in the form of solid particles, such as steel wear particles, iron oxide particles, etc.; the other is The second type is iron in the oil-soluble state, such as organic iron compounds in the form of iron carboxylate. Since the organic iron compound is completely dissolved in the base oil, it generally does not affect the lubricating effect of the lubricating oil, so it will not have a significant impact on the operating state of the mechanical equipment. The iron element in the form of solid particles can have a relatively large impact on the equipment, such as clogging pipelines and filters...

AI Technical Summary

Problems solved by technology

The iron element in the form of solid particles can have a relatively large impact on the equipment, such as clogging pipelines and filters, resulting in insufficient oil supply in the system, resulting in poor lubrication of the friction pair, and hard solid particles can also affect the friction surface. Abrasive wear will accelerate the failure of equipment, etc., seriously affecting the normal operation of mechanical equipment

The traditional solution is to regularly replace the lubricating oil of the equipment or increase the filtration of the lubricating oil according to the working conditions of the mechanical equipment to meet the needs of the mechanical equipment for the lubricating oil; and regularly changing the lubricating oil often leads to a large amount of lubricating oil Consumption; Blindly filter the lubricating oil, you can not accurately grasp the filtering effect