ASTM D1264-2003e1 Standard Test Method for Determining the Water Washout Characteristics of Lubricating Greases《确定润滑脂抗水洗特性的标准试验方法》.pdf

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1、Designation: D 1264 03e1An American National StandardStandard Test Method forDetermining the Water Washout Characteristics ofLubricating Greases1This standard is issued under the fixed designation D 1264; the number immediately following the designation indicates the year oforiginal adoption or, in

2、the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.e1NOTEUpdated

3、adjunct information and deleted apparatus footnote editorially in November 2003.1. Scope*1.1 This test method covers the evaluation of the resistanceof a lubricating grease to washout by water from a bearing,when tested at 38 and 79C (100 and 175F) under theprescribed laboratory conditions. It is no

4、t to be considered theequivalent of service evaluation tests. This test method may notbe suitable for some greases containing highly volatile com-ponents.1.2 The values state in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does

5、 not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user this standard to establish appropriatesafety and health practices and determine the applicability ofregulatory limitations prior to use. For specific warningstatements, see 6.3.2.

6、Referenced Documents2.1 ASTM Adjuncts:ADJD3336 Standard Ball Bearing2ADJD6300 D2PP, Version 4.43, Determination of Preci-sion and Bias Data for Use in Test Methods for PetroleumProducts33. Summary of Test Method3.1 The grease is packed into a ball bearing, the bearing isthen inserted in a housing wi

7、th specified clearances, androtated at 600 6 30 rpm. Water, controlled at the specified testtemperature, impinges on the bearing housing at a rate of 5 60.5 mL/s. The amount of grease washed out in 60 6 1 min isa measure of the resistance of the grease to water washout.4. Significance and Use4.1 Thi

8、s test method estimates the resistance of greases towater washout from ball bearings under conditions of the test.No correlation with field service has been established.5. Apparatus5.1 Ball Bearing, ASTM test bearing size 6204 (seeADJD3336).25.2 Bearing Housing and Shield with dimensions as shownin

9、Fig. 1.5.3 Reservoir, Bearing-Housing Mount, Circulating Pump,and Drive Motor, similar or equivalent to those shown in Fig.1. Table 1 provides the metric equivalents.5.4 Heating Source, to maintain the water temperature at 796 1.7C (175 6 3F).NOTE 1Suitable temperature control may be obtained by the

10、 use ofimmersion heaters, steam coils, or infrared heat lamps, in conjunction withtransformers or thermostats.5.5 Thermometer or Thermocouple, to determine the tem-perature of the water reservoir.6. Materials and Reagents6.1 Purity of ReagentsReagent grade chemicals shall beused in all tests. Unless

11、 otherwise indicated, it is intended thatall reagents shall conform to the specifications of the commit-tee on Analytical Reagents of the American Chemical Society,where such specifications are available.4Other grades may be1This test method is under the jurisdiction of ASTM Committee D02 onPetroleu

12、m Products and Lubricants and is the direct responsibility of SubcommitteeD02.G0.06 on Functional Tests - Contamination.Current edition approved Nov. 4, 2003. Published July 2003. Originallyapproved in 1953. Last previous edition approved in 2000 as D 126400.2The ball bearing has been standardized b

13、y Committee D02. Available fromASTM International Headquarters. Order Adjunct No. ADJD3336.3Available from ASTM International Headquarters. Order Adjunct No.ADJD6300.4Reagent Chemicals, American Chemical Society Specifications, AmericanChemical Society, Washington, DC. For suggestions on the testing

14、 of reagents notlisted by the American Chemical Society, see Analar Standards for LaboratoryChemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeiaand National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,MD.1*A Summary of Changes section appears at the end o

15、f this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.used, provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.6.2 Distilled W

16、ater.6.3 Cleaning SolventCapable of sufficiently cleaning thetest bearing for use in the test. Either reagent grade Stoddardsolvent, also known as Mineral Spirits, (WarningCombustible. Vapor harmful), or American Chemical SocietyFIG. 1 Water Washout Characteristics of Lubricating Grease ApparatusTAB

17、LE 1 Metric Equivalents for Fig. 1in. mm in. mm F C0.010 0.25 0.875 22.22 100 6 5 37.8 6 30.015 0.38 0.938 23.81 175 6 3 79.4 6 20.031 0.79 214 57.118 3.18 6 152532 3.97316 4.7614 6.35D126403e12reagent grade n-heptane4(WarningFlammable. Harmful ifinhaled) has been found suitable for use.7. Preparati

18、on of Apparatus7.1 Clean the reservoir and water passages by flushing withdistilled water. Wipe off any oil scum which has been depositedon the surfaces of the reservoir. Clean the test bearing withcleaning solvent (see 6.3).8. Procedure8.1 Pack the tared bearing with 4.00 6 0.05 g of test grease.In

19、sert the bearing and tared shields into the housing, andassemble the unit in the test apparatus.8.2 Add a minimum of 750 mL of preheated distilled waterto the reservoir, but keep the water level below the bearinghousing. Without starting the bearing, start the water circulat-ing pump while diverting

20、 the water spray from the housing bymeans of a piece of tubing attached to the capillary dischargetube or with a deflecting metal shield until equilibrium tem-perature is attained. When the test is to be made at the highertemperature of 79 6 1.7C (175 6 3F), it will be necessary toheat the water to

21、the specified temperature by a previouslyselected source of heat.8.2.1 If the rig has one motor driving both pump and testbearing, remove the belt from the test bearing spindle pulleyduring water warm-up time.8.3 When the water reaches the specified temperature,adjust the bypass valve to give a wate

22、r-flow rate, through therubber tubing and into a glass graduate, of 5 6 0.5 mL/s (Note2). Remove the rubber tubing from the capillary dischargetube, and adjust the water jet so that it impinges on the endplate 6 mm (14 in.) above the outer opening of the bearinghousing. Start the bearing.NOTE 2Suffi

23、cient experience should be obtained with a particulartester to make sure that the water-flow rate can be maintained within thespecified limits for a 60 6 1 min test run.8.4 With the bearing operating at a speed of 600 6 30 rpm,continue the operation for 60 6 1 min.8.5 Shut off the motor and heating

24、source, if used. Removethe test bearing and shields and place them on a tared watchglass, with the shields being separated from the bearing andplaced with their inner faces upward to expose the wet greaseto the air.8.6 Dry the bearing and shields for 15 6 0.25hat776 6C(170 6 10F), and then weigh to

25、determine the grease loss(Note 3). The grease remaining on the shields, and any leakageoccurring during the drying period, should not be considered asgrease lost. Duplicate tests shall be run.NOTE 3Some weight loss may be experienced for greases containinghighly volatile oils because of evaporation

26、during drying.NOTE 4Some greases may contain components which make it diffi-cult to completely dry the sample at 77 6 6C (170 6 10F). For thosegreases, the drying temperature may be increased to 93 6 3C (200 65F) to facilitate removal of water during the time specified.9. Report9.1 Report the averag

27、e of duplicate tests as the percentageweight of grease washed out at the test temperature, andindicate the temperature at which the bearing assembly andgrease were dried.10. Precision and Bias510.1 The precision of this test method was obtained usingADJD6300 (D2PP).310.2 RepeatabilityThe difference

28、between successive re-sults obtained by the same operator with the same apparatusunder constant operating conditions on identical test materialwould, in the long run, in the normal and correct operation ofthe test method, exceed the following values only in one casein twenty.Repeatability38C r = 0.8

29、 (X +2)79C r = 0.6 (X + 4.6)where:X is the average of two results in %.10.2.1 Reproducibility The difference between two singleand independent results obtained by different operators work-ing in different laboratories on identical test material would, inthe long run, exceed the following values only

30、 in one case intwenty.Reproducibility38C R = 1.4 (X +2)79C R = 1.1 (X + 4.6)where:X is the average of two results in %.10.3 BiasThe procedure in this test method has no biasbecause the value of grease washout can be defined only interms of a test method.11. Keywords11.1 grease; washout; water5Suppor

31、ting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR: D02-1272 and D021434.D126403e13SUMMARY OF CHANGESSubcommittee D02.G0 has identified the location of selected changes to this standard since the last issue(D 1264 00) that may impact the

32、use of this standard.(1) Updated Referenced Documents Section. (2) Updated Reagents Section.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determinatio

33、n of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdra

34、wn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your c

35、omments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D126403e14