Method for determining modifying factor in spectroscopic analysis of iron content of lithium base grease
A technology of lithium-based grease and correction factor, which is applied in the measurement of color/spectral characteristics, etc., can solve the problems of high viscosity and different deviations of analysis results, etc., and achieve the effect of accurate spectral analysis results
Inactive Publication Date: 2009-11-18
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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Problems solved by technology
[0003] Since grease is a solid or semi-solid substance with high viscosity and metal particles are wrapped in the grease, if there is no suitable solvent to dilute and dissolve it, it cannot be analyzed with an oil spectrometer, and different solvents are suitable for analysis. The results have different biases
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Experimental program
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Embodiment Construction
[0017] A method for determining the correction factor in the spectroscopic analysis of the iron content of lithium-based grease, comprising:
[0018] Step 1, preparation of different concentrations of C 理论 The standard oil sample of iron element, the solvent is liquid paraffin, bis(2-ethylhexyl) phthalate or bis(2-ethylhexyl) sebacate;
[0019] In step 2, a certain amount of lubricating grease is added to the standard oil sample prepared in step 1, fully stirred to make it evenly mixed, and a fatty oil sample containing standard iron is obtained;
[0020] Step 3, according to the spectroscopic analysis method of lubricating grease, the metal element concentration C 实测 Run the test and calculate the spectral test correction factor α.
[0021] The method for determining the correction factor in the spectral analysis of the iron content of lithium-based grease, the calculation formula of the spectral test correction factor α is:
[0022] α=C 理论 / C 实测 .
[0023] Here, the re...
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Abstract
The invention relates to the analysis of iron content of lithium base grease, in particular to the spectroscopic analysis of the iron content of the lithium base grease. A method for determining a modifying factor in the spectroscopic analysis of the iron content of the lithium base grease comprises the following steps: 1, preparing standard oil samples containing iron with different concentrations C (theoretical value), wherein the solvent is liquid paraffin, bis(2-ethylhexyl) phthalate or Di(2-ethyl-hexyl)sebacate; 2, adding grease with a certain quantity into the standard oil samples prepared in the step 1, fully stirring to be uniformly mixed, and obtaining grease oil samples containing standard iron; 3, testing the concentration C (actual measurement) of metal element according to the spectroscopic analysis of the grease, and calculating the spectroscopic test modifying factor Alpha. The invention unifies the measurement method of metal particles in the grease with the measurement method of metal particles in lubricating oil so as to effectively hold the abrasion state of a bearing.
Description
technical field [0001] The invention relates to the analysis of the iron content of lithium-based lubricating grease, in particular to the spectral analysis of the iron content of lithium-based lubricating grease. Background technique [0002] Among all kinds of mechanical equipment currently in use, the use of rolling bearings is quite common, especially in low-speed, heavy-duty, rotating or slewing equipment. According to statistics, about 80% of all rolling bearings are lubricated with grease, and lithium-based grease is a commonly used grease with the widest range of use and the largest amount. Because the grease is not sensitive to the influence of general temperature and has greater adaptability to changes in load properties and operating speed, it is suitable for machinery with large temperature and speed changes or reverse and intermittent movements. And because the grease is not easy to lose or be squeezed out, and does not need to be replaced frequently, the seali...
Claims
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IPC IPC(8): G01N21/27
Inventor 刘仁德
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE