Method for checking oil outlet speed of oil-retaining bearing
A kind of bearing and speed technology, which is used in mechanical bearing testing, by removing certain components, such as weighing and measuring devices, can solve the problem that there is no standard inspection method for oil output speed, so as to avoid the difference in volume and easy to operate. , the effect of high inspection efficiency
Pending Publication Date: 2020-10-09
洛阳精一新材料科技有限公司 +1
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[0002] Known, powder metallurgy oil-impregnated bearings refer to sliding bearings made of porous materials with lubricating oil stored in the pores. The bearings are soaked in lubricating oil, and the air in the pores is discharged by vacuuming or heating to allow the lubricating oil to enter the bearing. In the pores, the lubricating oil comes out of the pores due to factors such as thermal expansion and siphon during work, so as to achieve the lubrication effect. The speed at which the lubricating oil comes out of the pores has a certain impact on the early noise and later life. It is an oil-containing bearing lubricating oil. An important indicator, found through searching, "Determination of density, oil content and porosity of sintered metal materials (excluding cemented carbide) permeable sintered metal materials" (GBT 5163-2006), which only stipulates oil-impregnated bearings The definition and detection method of oil content, the current national standard and industry standard do not have a standard test method for the speed of oil production
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Embodiment 1
[0038] The φ2.3*φ9*3mm bearing used in the 385 type DC motor was impregnated with the imported oil sample of SHC626, and the noise decreased significantly after starting for 3~5s, and the impregnated self-produced CX2 oil sample with known formula was started for 10~15s After that, the noise decreased obviously, and the noise reduction speed was not as good as that of SHC626. During the test, it can be clearly seen that the bearing oil impregnated with SHC626 comes out faster. Utilizing the present invention, the temperature and baking time of the electric blast constant temperature drying oven are set at 150°C and 24h, and each oil sample uses 10 bearings to measure the data of SHC626, A=11.0166g, B=11.4552g, C =11.2878g, the calculated m=38.17%, the measured data of CX2, A=11.4644g, B=10.9784g, C=11.4058g, calculated m=12.06%, the result shows that the oil yield of CX2 is obviously lower than that of SHC626 , after adjusting the formula of CX2, CX2 measured the data again,...
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The invention discloses a method for checking the oil outlet speed of an oil-retaining bearing. The invention relates to the field of powder metallurgy oil bearing oil outlet speed detection. According to the invention, three times of weighing are utilized, calculating the oil yield of the powder metallurgy oil-retaining bearing, therefore, the oil outlet speed is represented; according to the method, the mass loss percentage is used, so that the volume difference of lubricating oil with different specific gravities is avoided, the volume of the bearing in GBT 5163-2006 does not need to be measured, a great guiding effect is achieved on bearing oil selection, and the method has the characteristics of easy and convenient operation, high inspection efficiency and the like, and is suitable for large-scale application and popularization.
Description
technical field [0001] The invention relates to the field of detection of oil-out speed of powder metallurgy oil-impregnated bearings, in particular to a method for testing the oil-out speed of oil-impregnated bearings. Background technique [0002] Known, powder metallurgy oil-impregnated bearings refer to sliding bearings made of porous materials with lubricating oil stored in the pores. The bearings are soaked in lubricating oil, and the air in the pores is discharged by vacuuming or heating to allow the lubricating oil to enter the bearing. In the pores, the lubricating oil comes out of the pores due to factors such as thermal expansion and siphon during work, so as to achieve the lubrication effect. The speed at which the lubricating oil comes out of the pores has a certain impact on the early noise and later life. It is an oil-containing bearing lubricating oil. An important indicator, found through searching, "Determination of density, oil content and porosity of sint...
Claims
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IPC IPC(8): G01N15/08G01N5/04G01N5/02G01M13/04
CPCG01N15/08G01N5/04G01N5/02G01M13/04
Inventor 陈凯
Owner 洛阳精一新材料科技有限公司
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