Lubrication oil ageing simulation assessment method

A technology of lubricating oil and metal catalyst, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of inability to simulate the oxidation process of lubricating oil, long test period, etc., and achieve the effect of strong practical promotion value

Inactive Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the above methods have some shortcomings. First, these evaluation methods are carried out under normal pressure, which cannot simulate the oxidation process of lubricating oil under high pressure. more likely to occur in the state
Secondly, the test period is long, for example, the thermal stability SH / T 0209 of hydraulic oil needs 168h; the sludge and corrosion trend test method SH / T0565 with inhibitor mineral oil needs to run for 1000 hours; the test method for mineral oil oxidation characteristics with inhibitor GB / T12581 requires a maximum of 10000h

Method used

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  • Lubrication oil ageing simulation assessment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Follow the steps below to test the performance of lubricating oil:

[0029] (1) Take ordinary anti-wear hydraulic oil with quality level L-HM46 and copper sheet with a thickness of 0.10-0.12mm, a width of 15mm, and a length of 51mm, and test the performance parameters;

[0030] The performance parameters include: the viscosity, chroma, acid value, filterability, sludge content of the anti-wear hydraulic oil, and the quality of the copper sheet;

[0031] (2) Add 10% deionized water by mass percentage to the anti-wear hydraulic oil, add the copper sheet, feed 0.7MPa oxygen, run continuously at 150°C until the oxygen pressure drops by 20%, and then detect the The above performance parameters;

[0032] (3) Calculate the difference between the performance parameters obtained by the two tests and the time of continuous operation, and evaluate the oxidation resistance of the lubricating oil according to the difference.

[0033] The test results are shown in Table 1.

[0034...

Embodiment 2

[0038] Follow the steps below to test the performance of lubricating oil:

[0039] (1) Take the high-pressure anti-wear hydraulic oil of brand A whose quality level is L-HM46, and copper and steel sheets with a thickness of 0.10-0.12mm, a width of 15mm, and a length of 51mm, and test the performance parameters;

[0040] The performance parameters include: the viscosity, chroma, acid value, filterability, sludge content, and liquid phase corrosion of the anti-wear hydraulic oil, as well as the quality, appearance, and corrosion level of the copper and steel sheets;

[0041] (2) Add 5% synthetic seawater by mass percentage to the anti-wear hydraulic oil, add the copper sheet and steel sheet, feed 0.8MPa oxygen, run continuously at 155°C until the oxygen pressure drops by 20%, and then again Detect said performance parameters;

[0042] (3) Calculate the difference between the performance parameters obtained by the two tests and the time of continuous operation, and evaluate the ...

Embodiment 3

[0048] Follow the steps below to test the performance of lubricating oil:

[0049] (1) Take high-pressure anti-wear hydraulic oil of brand B whose quality level is L-HM46, and copper and steel sheets with a thickness of 0.10-0.12mm, a width of 15mm, and a length of 51mm, and test the performance parameters;

[0050] The performance parameters include: the viscosity, chroma, acid value, filterability, sludge content, and liquid phase corrosion of the anti-wear hydraulic oil, as well as the quality, appearance, and corrosion level of the copper and steel sheets;

[0051](2) Add 5% synthetic seawater by mass percentage to the anti-wear hydraulic oil, add the copper sheet and steel sheet, feed 0.8MPa oxygen, run continuously at 155°C until the oxygen pressure drops by 20%, and then again Detect said performance parameters;

[0052] (3) Calculate the difference between the performance parameters obtained by the two tests and the time of continuous operation, and evaluate the oxida...

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Abstract

The invention relates to a lubrication oil ageing simulation assessment method which can simulate an oxidation process of lubrication oil in high-temperature and high-pressure condition when the lubrication oil contain moisture and air/oxygen. The method comprises the following steps of adding 0.05% to 15% by mass of water into lubrication oil to be tested, putting into metal catalyst, introducing 0.1 to 35MPa oxygen, keeping the oil temperature at 100 to 280 DEG C until the gas pressure is reduced by 10-50 percent, and testing the items like the viscosity, the chromaticity, the acid value and the filterability of the lubrication oil, the oil sludge content, the catalyst weightlessness and the test running duration. The ageing resistance of the lubrication oil can be analyzed by comprehensively comparing the change of the tested items. The lubrication oil ageing simulation assessment method not only can simulate lubrication oil ageing in the moisture-contained, high-pressure and high-temperature condition, but also can quickly and comprehensively assess lubrication oil ageing; furthermore, the assessment results are objective, and the test material cost and the labor cost are effectively reduced.

Description

technical field [0001] The invention relates to a simulation evaluation method for lubricating oil aging, in particular to a performance evaluation method for simulating the oxidation process of the lubricating oil when it contains moisture and air / oxygen, and the lubricating oil is rapidly compressed and the temperature rises suddenly. Background technique [0002] Lubricating oil is an important guarantee for the safe and reliable operation of mechanical equipment. It can fully lubricate the lubricating parts of mechanical equipment and reduce friction and wear of components. However, in the process of use, the lubricating oil will oxidize and deteriorate with the prolongation of the use time, and its quality will continue to decline, and even cause corrosion and other undesirable phenomena to the lubricating parts. Oil is very important. The change of lubricating oil in the high temperature oxidation process is mainly the reaction between hydrocarbons and molecular oxyge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/28
CPCG01N33/2888
Inventor 程安国陈惠卿汤涛付丽雪桂砚楠薛玉苓孙涛贾德强
Owner CHINA PETROLEUM & CHEM CORP
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