Lubricating grease GOI-54п. GOST 3276-89. Specifications.
International standard Grease GOI-54п. Specifications Information data
1. Developed and submitted by the Ministry of oil refined and petrochemical industry of the USSR. 2. Approved and put into effect by the Resolution of State standard of the USSR of June 29, 1989 N 2244. 3. Instead of GOST 3276-74. 4. Reference normative and technical documents.
5. The term limit was lifted under the Protocol N 4-93 of the Interstate Council for standardization, Metrology and certification (ИУС 4-94). 6. Reissue This standard applies on the plastic grease ВНИИ НП-279 intended to lubricate of friction units operating contacting with aggressive environments at the temperature rate from minus 50 to plus 50 Celsius degree and air at temperature from minus 50 to plus 150 Celsius degree. The application conditions of the grease according to GOST 9.014. The designation of the grease according to GOST 23258 is НТ4/5-3.
1. Specifications 1.1 The grease must be manufactured in accordance with the requirements of this standard, according to technological regulations and from components which applied during producing of grease samples passed state tests with positive results and were approved for using in established order. 1.2 Characteristics 1.2 According to physical and chemical indicators, the grease must comply with the requirements and standards are represented below:
Note. In the number of mechanical impurities art not allowed sand and other abrasive and metal solids. 1.2.2 Safety requirement 1.2.2.1 The GOI-54п grease by degree of impact on the body belongs to the 4th hazard-class (low-hazard) according to GOST 12.1.007. 1.2.2.2 The maximum permissible concentration of hydrocarbons in the air of operating area of the production room is 300 mg/m. The contents of hydrocarbons in the air is determined by the УГ-2 device. 1.2.2.3 While operate with the grease must apply personal protective equipment according to the industry standards approved in the established order. 1.2.2.4 The grease is intrinsically safe, the flash point temperature above 250 Celsius degree. 1.2.2.5 In case of fire must apply all fire extinguishing means, except water. 1.2.2.6 The room in which are carried out of works with paste must be equipped with supply and exhaust ventilation. The equipment must be grounded from static electricity according to GOST 12.1.018. 1.3 Pacing, labeling according to GOST 1510. 1.3.1 Greases supplied by the Ministry of defense is packed only in cans made with white tin with capacity of 18-20 dm. The neck of the can must be sealed. 2. Acceptance 2.1 The grease is taken in batches. A batch is considered to be a quantity of grease weighting up to 6 t produced during a technological cycle, homogeneous on the component composition and quality indicators, accompanied by a quality document. 2.2 To check the grease quality are performed acceptance tests. The volume of samples is determined according to GOST 2517. 2.3 The “penetration” indicator is determined by the manufacturer only if the GOI-54p grease is exported. 2.4 If unsatisfactory test results are obtained for at least one indicator, repeated tests are performed on a newly selected sample take from the same sample. The results of repeated tests are distributed to the entire batch. 2.5 To check the conformity of the packing and labeling with the requirements of this standard, take 3% of packing units, but not least than three. If unsatisfactory results are obtained, the double sample is checked. The results of repeated tests are distributed to the entire batch. 3. Test methods 3.1 The volume of samples is determined according to GOST 2517. For the combined sample, take 1 kg of grease. 3.2 To determine the appearance, the grease is applied with a spatula on a slide glass according GOST 111 a layer of about 1 mm and viewed with the naked eye in passing light. 3.3 When determining the sliding temperature are used the steel plates grades 40 or 50 according to GOST 1050 size 50x50 mm, roughness of the surface according to GOST 2789 must be no more than 0,63 mcm. The grease is applied to the plates without preliminary melting. 3.4 When determining the viscosity is applied a capillary with radius about 0,1 mm. 3.5 The corrosion effect on metals is carried out on steel plates grades 40 or 50 according GOST 1050 and on copper plates grades M1 according to GOST 859. Colors of the discoloration on copper plates isn’t a rejection sign. 3.6 The determination of mechanical impurities 3.6.1 Equipment, reagents and materials Water jet pump according to GOST 25336 or another type, providing a maximum residual pressure of not more than 1.33·10 PA (10 mm Hg). A drying Cabinet or thermostat that provides a heating temperature (105±2) °C. Bath water or electric stove with a closed spiral. Analytical scales with a weighing error of no more than 0.0002 g. Glass laboratory utensils and equipment according to GOST 25336: cups In-1-200 TS, In-1-400 TS, In-1-600 TS, In-1-1000 TS or flasks KN-2-500-34 TS, KN-2-500-50 TS, KN-2-750-34 TS, KN-2-1000-34 TS, KN-2-1000-42 TS, KN-2-1000-50 vehicle; cups SV 14/8, 19/9, 24/10, 34/12; funnels in 56-80 HS, in 75-110 HS; flasks 1-500, 1-1000; desiccators 1-190, 1-250, 2-190, 2-250. Funnel for hot filtration. A glass rod 150-200 mm long with a fused end. Thermometer TL-2 1-2 or similar type. Filter paper according to GOST 12026. A vacuum gauge that registers a residual pressure of 1.33·10 PA (10 mm Hg). Flushing with a rubber pear. An ashless filter grades “White tape” or “Red tape”. In case of disagreement of the grease quality on mechanical impurities, use a paper filter grades “White tape”, tests are carried out under the same conditions. Petroleum solvent-With 50/170 according to GOST 8505, or the petroleum solvent C or C according to NTD, or straight-run gasoline with a boiling point of not less than 80 °C. Toluene oil according to GOST 14710 or GOST 5789. Rectified ethyl alcohol technical according to GOST 18300. A mixture of ethyl alcohol and toluene 1:4 (by volume). Distilled water according to GOST 6709. During testing it’s allowed to use reagents with a qualification not lower than represented in the standard. 3.6.2 Preparing for the test 3.6.2.1 The grease sample preliminary heated up to 80 Celsius degree is mixed well by the glass rod during 5 min. 3.6.2.2 The paper filter is washed consistently with petrol or the solvent, toluene and additionally processed by filtering 50 cm of hot alcohol at temperature 50-60 Celsius degree. If necessary, the filter is washed 50 cm of hot distilled water heated up to a temperature from plus 90 to plus 100 Celsius degree. The filter is put in a clean dry cup for weighting. The cup with the filter with open lid is dried in the drying Cabinet at temperature (105+/-2) Celsius degree during 45 min, after so the cup is closed the lid. The cup with the filter is cooled for 30 min, and then is weighted with an error of no more than 0,0002 g. The filter Cup is dried and weighed until the difference between two consecutive weighings is no more than 0.0004 g. Repeated drying of the filter is carried out within 30 minutes. 3.6.2.3. The solvents were filtered through a filter of the same type, which are testing the lubrication. 3.6.3. Testing 3.6.3.1. A sample of lubricant take weight about 100 g with error of at most 0.05 grams is placed in a beaker and diluted with gasoline or a solvent, heated to a temperature of 70 °C. The ratio of the volume of the solvent to the mass of the grease sample is from 2 to 4. Before the test, the minimum amount of solvent required to dissolve the sample is determined in advance. 3.6.3.2. The contents of the glass are filtered through a paper filter prepared in accordance with clause 3.6. 2. 2, placed in a funnel for hot filtering or in a glass funnel mounted in a tripod. It is allowed to filter the solution and wash the filter with the sediment under vacuum.
The solution is poured on the filter on a glass stick, the funnel with the filter is filled with a solution no more than 3/4 of the height of the filter. The remainder is washed off the glass with pure gasoline or petroleum solvent, heated to 70 °C, until a drop of filtrate placed on the filter paper will not leave an oil stain after evaporation. 3.6.3.3. for filtering under vacuum, the funnel for filtering with a rubber stopper is attached to the flask for filtering under vacuum, connected to the pump. The paper filter is wetted with a solvent and placed in the funnel so that the filter fits snugly against the walls of the funnel. The funnel is filled with a solution no more than 3/4 of the height of the filter. When filtering with the use of a funnel for hot filtration, it is not allowed to boil the filtered solution. Petrol solution or solution of petroleum solvent were allowed to heat to a temperature not higher than 70 °C. 3.6.3.4. After filtration, the filter with the sediment is washed with gasoline or petroleum solvent heated to 70 °C until there are no traces of grease on the filter and the solvent flows completely transparent and colorless. Additionally, the filter is washed with toluene precipitate, heated to a temperature of no more than 80 °C, and if there is a sediment on the filter heated to a temperature of 60 °C alcohol-toluene mixture. 3.6.3.5. the Filter with a precipitate after washing with an organic solvent is dried in air for 10-15 minutes and then washed with distilled water heated to a temperature of 90 to 100 °C. 3.6.3.6. Transfer the filter with the precipitate to a Cup for weighing with an open lid, in which a clean filter was dried, and dry in a drying Cabinet at a temperature (105±2) °C for at least 45 minutes. Then the Cup is closed with a lid, cooled in a desiccator for 30 minutes and weighed with an error of no more than 0.0002 g. The filter Cup is dried and weighed until the difference between two consecutive weighings is no more than 0.0004 g. Repeated drying of the filter as well as subsequent cooling is carried out for 30 minutes. 3.6.3.7. to determine the presence of sand and other abrasive mechanical impurities, the sediment obtained on the filter is considered with the naked eye. In the presence of sand and (or) other abrasive mechanical impurities on one of the filters, the test is repeated. If there are mechanical abrasives or sand on at least one of the filters, the lubricant is considered to have failed the test during repeated testing. 3.6.4. Processing results 3.6.4.1. the Mass fraction of mechanical impurities (%) as a percentage is calculated using the formula: where is the weight of the weighing Cup with a paper filter and mechanical impurities, g; - weight of the weighing Cup with a clean prepared paper filter, g; - sample weight, g. 3.6.4.2. the test result is taken as the arithmetic mean of the results of two parallel definitions. 3.6.4.3. Convergence Two determination results obtained by a single laboratory assistant are considered reliable (with a confidence probability of 95%), if the discrepancy between them does not exceed 0.005%. 3.6.4.4. Reproducibility Two test results obtained by different laboratory assistants in two different laboratories are considered reliable (with a confidence probability of 95%), if the discrepancy between them does not exceed 0.01%. The mass fraction of mechanical impurities up to 0.005% inclusive is estimated as their absence. 3.7. Penetration is determined by mixing without preliminary melting. 4. Transportation and storage 4.1 Transportation and storage is carried out according to GOST 1510. 5. Manufacturer’s guarantee 5.1 The manufacturer guarantees the conformity of the grease quality with the requirements of this standard, if transportation and storage conditions are met. 5.2 The warranty period for storing of the grease is 10 years from the day of manufacture. |
