Method for analyzing abrading metal particles in lubricating oil

A technology of metal particles and analysis methods, applied in the direction of analysis materials, instruments, etc., can solve the problems such as the inability to determine the specific material grade of the wear metal particles in the lubricating oil, the lack of published materials and patents, and the inability to achieve accurate positioning.

Inactive Publication Date: 2013-05-29
AECC SHENYANG ENGINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the analysis methods currently used cannot determine the specific material grade of the worn metal particles in the lubricating oil, so that it is impossible to accurately locate the abnormally worn parts in the engine transmission lubrication system
Due to technical confidentiality and other reasons, foreign engine companies have no publicly published materials and patents in this regard.

Method used

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  • Method for analyzing abrading metal particles in lubricating oil
  • Method for analyzing abrading metal particles in lubricating oil
  • Method for analyzing abrading metal particles in lubricating oil

Examples

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Embodiment 1

[0024] This embodiment provides an analysis method for wear metal particles in lubricating oil, which is characterized in that: in the analysis method for wear metal particles in lubricating oil, since the wear metal particles in the transmission lubrication system exist in lubricating oil, these The metal particles are extracted and prepared into a sample suitable for analysis, and then the sample is quantitatively analyzed by an appropriate method to finally determine the specific material of the worn metal particles;

[0025] (1) Extraction of worn metal particles

[0026] Extraction of wear metal particles smaller than 250μm: Due to the small size of this type of wear metal particles, they cannot be observed with the naked eye, and cannot be directly extracted by conventional means. At the same time, it is also necessary to ensure that there is no accumulation of wear particles after extraction, and their morphology cannot be damaged , using the ferrography analysis techno...

Embodiment 2

[0035] This embodiment provides an analysis method for wear metal particles in lubricating oil, which is characterized in that: in the analysis method for wear metal particles in lubricating oil, since the wear metal particles in the transmission lubrication system exist in lubricating oil, these The metal particles are extracted and prepared into a sample suitable for analysis, and then the sample is quantitatively analyzed by an appropriate method to finally determine the specific material of the worn metal particles;

[0036] (1) Extraction of worn metal particles

[0037] Extraction of wear metal particles smaller than 250μm: Due to the small size of this type of wear metal particles, they cannot be observed with the naked eye, and cannot be directly extracted by conventional means. At the same time, it is also necessary to ensure that there is no accumulation of wear particles after extraction, and their morphology cannot be damaged , using the ferrography analysis techno...

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Abstract

The invention discloses a method for analyzing abrading metal particles in lubricating oil, which relates to extraction of abrasion metal particles. The method comprises the following steps of: extracting metal particles less than 250 microns by a spectra manufacturing technology with ferrographic analysis, and extracting metal particles greater than 250 microns by a filter or sedimentation technology; and performing quantitative analysis on the composition of samples of the abrasion metal particles, wherein a metal spraying instrument or a carbon sinking instrument is utilized to solve the conductive problem of the samples of the particles which are extracted by the spectrum technology, then the samples are generally classified according to contrast difference of particle images through a back scattering technology, and composition analysis is performed on different chippings through an energy spectrum analysis method to calculate the content of main metal elements. The analytical method provided by the invention can be used for monitoring abrasion failures of a transmission lubrication system. Abrasion metal particle samples with different states are subjected to quantitative analysis to determine the specific material trademarks of the abrasion metal particles in lubricating oil, and then abnormal abrasion parts of the transmission lubrication system of an engine can be accurately positioned.

Description

technical field [0001] The invention relates to the field of wear fault monitoring of a transmission lubrication system during development and test run, flight test and field use of aero-engines and gas turbines, and particularly provides an analysis method for worn metal particles in lubricating oil. Background technique [0002] In the development of modern aeroengines, in order to monitor the wear state of the transmission lubrication system, it is usually necessary to analyze the wear metal particles in the lubricating oil, and judge the possible wear of the engine transmission lubrication system according to the change trend of the content of related alloy elements in the lubricating oil Fault. However, the analysis methods currently used cannot determine the specific material grade of the worn metal particles in the lubricating oil, so that the accurate positioning of the abnormally worn parts in the engine transmission lubrication system cannot be realized. Due to te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00
Inventor 张开阔郎宏
Owner AECC SHENYANG ENGINE RES INST
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