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Bearing cleanliness detection method

A detection method and cleanliness technology, which can be applied in the direction of removing certain components, such as weighing, etc., can solve problems such as damage and pollution of rolling bearings, and achieve the effect of improving control level, strong applicability, and avoiding grinding media pollution.

Inactive Publication Date: 2016-10-26
AVIC HARBIN BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is to solve the technical problem that the pollution of the bearing causes the damage of the rolling bearing, and provides a method for detecting the cleanliness of the bearing

Method used

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  • Bearing cleanliness detection method

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Experimental program
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Effect test

specific Embodiment approach 1

[0022] Specific implementation mode 1: The detection method of bearing cleanliness in this implementation mode:

[0023] 1. Use a 0.45 μm microporous nylon filter membrane to filter the cleaning solvent under reduced pressure through a suction filter bottle;

[0024] 2. Put the soaked 1.2μm microporous nylon filter membrane in an electric drying oven and dry it at 100±5°C for 30 minutes, then put it in a drying vessel with a desiccant to cool down and keep the weight, and analyze it with an accuracy of 0.1mg The balance weighs the 1.2μm microporous nylon filter membrane, and records the data X;

[0025] 3. Transfer the cleaning solvent treated in step 1 to the pressure tank, use a spray gun to perform high-pressure spray cleaning on the bearing to be tested under the pressure of 0.3-0.5MPa, and then put the bearing to be tested into the cleaning tank. Add cleaning solvent until the liquid level in the cleaning tank is 1.5 to 2 times the thickness of the bearing to be tested, ...

specific Embodiment approach 2

[0028] Embodiment 2: This embodiment differs from Embodiment 1 in that the drying temperature in step 2 is 100°C. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the pressure of the spray gun in step 3 is 0.4 MPa. Others are the same as those in the first or second embodiment.

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Abstract

The invention provides a bearing cleanliness detection method and relates to an aircraft bearing cleanliness detection method. According to the bearing cleanliness detection method, the technical problem that a rolling bearing is damaged due to the pollution is solved. The method comprises the following steps: putting a wetted 1.2-micron micro-hole nylon filter membrane into an electrically heated drying oven, drying at 100+ / -5 DEG C for 30 minutes, carrying out weighing, and recording data X; and carrying out high-pressure spraying cleaning on a to-be-detected bearing by virtue of a spray gun, carrying out ultrasonic concussion, centrifugation and suction filtration, recording weight Y of the filtered 1.2-micron micro-hole nylon filter membrane, and calculating cleanliness weight Y-X, thereby finishing the bearing cleanliness detection. The production process is optimized and improved by virtue of analysis measures of an optical microscope and a scanning electron microscope and physical and chemical information representing bearing surface residual particles, and the cleanliness control level is improved. The bearing cleanliness detection method belongs to the bearing cleanliness detection field.

Description

technical field [0001] The invention relates to a method for detecting the cleanliness of an aviation bearing. Background technique [0002] Bearing cleanliness has a great influence on bearing performance. The decline of bearing cleanliness will lead to the decline or even loss of the lubrication, anti-rust, anti-wear, extreme pressure and other properties of the lubricant, increase the probability of bearing wear and pitting, and seriously affect the performance of the bearing such as vibration, noise and life reliability. Especially aero-engine bearings have higher requirements for cleanliness, which directly affects the safety and reliability of bearings during use. The improvement of bearing cleanliness will help to improve the service performance of bearings. Relevant data show that about 70% of the damage of rolling bearings is caused by the pollution of the bearings. Therefore, it is very important to carry out aerospace bearing cleanliness testing, which is a key...

Claims

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Application Information

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IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 赵强王喆张廷勇闫国斌马芳高亮刘秀莲李嘉仪丛兵兵孙惠丽
Owner AVIC HARBIN BEARING
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