This part of GB/T5822 specifies the method for determining the content of petroleum ether insoluble matter in railway diesel engine oil. This part includes method A (volume method) and method B (weight method). This part is applicable to the determination of the content of petroleum ether insoluble matter in used and in-use third and fourth generation diesel engine oil (hereinafter referred to as engine oil). GB/T 5822.2-2004 Method for determining the content of petroleum ether insoluble matter in railway diesel engine oil GB/T5822.2-2004 Standard download decompression password: www.bzxz.net

ICS 45.060.10
National Standard of the People's Republic of China
GB/T5822.2—2004
Replaces GH/T5828.2_98
Diesel engine oil for railway locomotives
Determination of petroleum ether insolubles
Tcst nmnethod of pctroleum ethcr insolubles in lubricating oil for railway locomotive diesel cngine2004-06-11 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of the People's Republic of China
2004-12-01 Implementation
GB/T5822.2—2004
This Part replaces GB/T5822.21986 Determination of oil change index of railway locomotive diesel oil (volumetric method)
Compared with GB/T5822.2—1986, this Part has the following changes: This Part is changed from the original "Determination of oil change index of railway locomotive diesel oil (volumetric method)" to "Determination of petroleum aldehydes in axle oil of diesel locomotive" : - the coagulant trimethylol chloramine was replaced by butyl ethanolamine; - the weight method was added; ||tt ||This part was proposed and coordinated by the Institute of Standardization and Metrology of the Ministry of Railways, and was drafted by the Institute of Chemistry of the Academy of Railway Sciences. The main drafters of this part are: Zhang Hong, Ju Li, Liu Hongye, Li Weidong, Tu Dan, Deng Shizheng. This part was first issued in 1986, and this is the first revision. 1 Standard
GB/T5822.2—2004
Determination of petroleum aldehyde insoluble matter in railway internal combustion engine diesel engine oil This part of CB/T5822 stipulates the determination of petroleum aldehyde insoluble matter in railway diesel engine oil. The car part includes the method (volume method) and the method (weight method). This part is applicable to the determination of the aldehyde insoluble matter content of the first and fourth generation diesel engine lubricants (hereinafter referred to as engine oil) that have been used for more than 10 years and are in use: 2. 1
Petroleum aldehyde insoluble pelroleumelherimlabl Centrifuge a portion of petroleum aldehyde insoluble to separate out the oil oxides, incomplete sugars and other insoluble substances. 2.2
Special diameter of swing
Lift the two centrifuge tubes of the centrifuge opposite to each other and place them on the same horizontal plane. Measure the distance between the two centrifuge tubes. 2.3
Precision plate
Under the specified conditions, the results of the cabinet beans are consistent with each other. [180 5725 1]
3 Test method
3.1.1 Centrifuge tube; made of glass, with a grinding stopper and a Tang mouth centrifuge test tube, with a capacity of 50mL and dimensions as shown in Figure 1. Unit is F·m
Figure 1 Appearance of grinding ink and centrifuge tubebZxz.net
GB/T5822.2—2004
3.1.2 Electric centrifuge: reverse speed is 1n00r/min-4(0z/min, lack of rotation speed 3wlmm=5mm.3.1.3 Measuring syringe, 5mL, small division 0.1mL3.1.4 Drying: 0%~-200℃ Accuracy 1:
3.1.5 Balance, large balance sensitivity is 0.
3.1.6 Tray balance, balance sensitivity is 0.1g
3.1.7 Sample: gas diameter 5m, accuracy 1m
3.2 Test
3.2 .1 No aldehyde (60%~90): externally pure. 3.2.2 Propanol; analytically pure:
Petroleum ethanol and isopropyl alcohol are flammable. Keep away from heat, sparks and open flames when using and storing. Operate in a fume hood.
3.2.3 n-Butyl diethylamine: analytically pure. n-Butyl diethylamine has a certain degree of corrosiveness. Avoid inhalation of alcohol on the skin and eyes when using. Operate in a fume hood.
3.3 Preparation
3.3.1 Preparation of n-Butyl diethylamine: Prepare different liquids according to Table 1 and mix evenly. Thai Petroleum Blue·Non-Based Blue Art Xue Amine Mixture in Three Generations of Oil
7n mL n-butyl alcohol amine (3.2.31 + 50ml sodium hydroxide (3.2,2) + 1:. spoon oil ether 1x.2. 1
tetrahydrofuran
1ngml. n-butyl alcohol amine (3.2.) + 5℃mL # thick (3.2.2) +: 1. Hydrogen ether (3, 2. 11
3.3.2 Wash the centrifuge (3.1.1) with water, then rinse thoroughly with distilled water, place in a 105℃ + 3℃ oven (5.1.4), take out and pair two samples (3.1.1) with a mass difference of less than 18. 3.3.3 Stir the sample thoroughly. If the mass is too high, heat it to 50℃-6℃ in the original container, then stir vigorously to make it uniform.
3.4 ​​Analysis steps
3.4.1 Method A (volume injection)
3.4.1.1 Inject 2 μL-5 μL of ether into the centrifuge (3.2). Then add 1% butyl diethanolamine (3.3. 1). 3.4.1.2 According to the length of time the engine oil has been used, use a measuring tube (or syringe) (3.1.5) to measure 2tml~5ml of the sample (3,3.3 (the sample with a long use time can take the lower limit). Dilute to 0.1mL and put it into a centrifuge (3.3.2). 3.4.1.3 Use petroleum ethanol to obtain the sample (3.3.1) in the measuring tube 3.1.31 (3.3.3) and flow it into the centrifuge (3,3.2), wash directly until clean
3.4.1.4 Add aldehyde-butyl diethanolamine solution (.3.1) to the centrifuge tip (3.3.2) at a distance of 5T.L and 2mm below the steel line. 3.4.1.5 Place the centrifuge tube (3.3.2) in the seat: invert the centrifuge tube (3.3.2) and shake it repeatedly to make the centrifuge tip (5.3.2) fully flow until a mud mixture is formed. 3.4.1. Wash the sample (3.3.) attached to the sample with the required size and thickness into the centrifuge (3.3.2) with butyl alcohol (3.1.1), add butyl alcohol solution (3.3.11 to 50m, centrifuge within 3h, 3.4.1.7 Load each sample (3.3.2) filled with the sample and the solution into the test tube of the centrifuge (5.1.2), turn on the switch of the centrifuge, and adjust the speed from U to 25001/mir=501/m :, 3.4.1.8 Separation time: The first night is divided into two intervals of 3min. The subsequent separation time is 10min. Remove the centrifuge tube 3 after the first centrifugation. 3.2) Accurately read the number of liters before the object is not dropped. Accurate to 17r=L. If the reading remains unchanged for three consecutive times, it is the number of liters without falling objects. The test result is calculated according to formula 1) and expressed as a percentage of volume. 3.4.1.9 When the surface of the centrifuge tube (3.3.2) 10mL~5CmL has a serious columnar change, carefully support the upper layer and roll it upside down to make the figure in GB/T 5822.2—2004
The filter in the centrifuge tube (3.3.2) should not exceed 3mL of known petroleum (3.2.1) to 501ml. Cut 2mm below and use a ring with a tube (3,1.7) to scrape off the reflected impurities. Be careful not to disturb the impurities at the bottom of the centrifuge tube. Remove the impurities from the petroleum (3.2.1) and wash the impurities adhering to the glass (3.1.7.) back into the centrifuge tube (3.3.2). Add corn ether (3,2.1) to the 5UmL mark and then test according to 3.1.1.7 and 3.4.1.5.
3.4.2 Method B)
3.4.2.1 Before cleaning, place the centrifuge tube (3.A.2) in 10%! Dry in the oven (3.1.4) for 3 hours, cool in the desiccator for 3 minutes, and weigh again until the difference between consecutive full weighings is no more than 1g. 3.4.2.2 According to the length of time the engine oil has been used, use a micrometer (3.4.2.1) to weigh 2.0g~5.0g of the sample (%, 3, 3). Extract until 0.1g.
3.4.2.3 Continue with 3.4.1.4 for replacement,
3.4.2.4 Continue with 8.4.1, 5.
3.4.2.5 Follow 3,4.1.6 Change the medium.
3.4.2.6 Change the medium according to 3.1.1,7.
3.4.2.7 Centrifuge for 30 min. Remove the centrifuge (3.4.2.1) and carefully pour out the supernatant so that the liquid remaining in the centrifuge (3.1.2.2) does not exceed 1 mL. When removing the supernatant from the centrifuge tube (3.4.2.1), be careful not to lift the impurities at the bottom of the centrifuge tube. 3.4.2.8 Add 1 ml of petroleum aldehyde (3.2.1) into the centrifuge tube (3.4.2.1). Use a glass sample (3.1.7) to remove all impurities at the bottom of the centrifuge tube (3.4.2.) and mix them thoroughly with the fresh liquid (3.2.1). Use petroleum ether (8.2.1) to remove all insolubles stuck on (3.1.7) into the centrifuge tube (3.4.2.), and add petroleum ether (3.2.1) to the mL mark and centrifuge for 20 minutes. Carefully remove the upper layer, and repeat the steps of 3.4.2.8 once in 3.4.2.9. 3.4.2.10 Remove all impurities from the centrifuge tube (3.4.2. =) Place vertically (in a baking cup) in a 105°C±3°C oven (3.1.4) and dry for 30 min. Cool at the end of the drying oven for 30 min and weigh to the nearest mg: Dry in the oven for 2 min each time, cool in the lower drying oven for 30 min and take the weight: The difference between two consecutive weighings should not exceed mg. Test results (2) are calculated using the mass fraction Y. 4 Calculation
4.1 Method The insoluble matter in petroleum aldehyde is expressed as a volume percentage X. The value is expressed as a percentage of zero. Calculate by (1): X(V:/V)X105
Where:
V is the volume of the insoluble matter in the centrifuge tube, in units of V-the volume of the sample cell, in units of milliliters (m[.]). The calculation result is expressed to two decimal places. 4.2 The content of petroleum solvents in square head B is expressed as mass percentage Y + numerical value, calculated by formula (2): =1(-m)/|×700
Where:
n—the total mass of solvents and centrifugal agents after drying, unit value is gram (g): The mass of the centrifugal kidney after drying, unit is gram (g): m—the mass of the sample oil, unit is point (g). The result is expressed to two decimal places,
.5 Precision
5.1 In the same laboratory, by the same investigator, using the same instrument, according to the same test method, and within a period of time, the relative error of the two independent test results obtained should not be greater than 11% of the average value, GB/T 5822.2—2004
The error is greater than 10% and does not exceed 5%. 5.2 The precision of the force method is that in a laboratory, the same operator uses the same equipment and the same test method to test the same object independently within a short period of time. The difference between the two Devin test results obtained shall not exceed the following values ​​(with the premise that the difference does not exceed 5%). See Table 2. 2
No object/%
The allowable error between two results determined in parallel
The error between the two stations shall not exceed α.07
Not greater than the average
Take the arithmetic mean of the two results of parallel determination as the petroleum phosphate insoluble content of the sample. 5.3
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.