【astm標(biāo)準(zhǔn)】d 3704 - 96 (2012)

1、Designation:D3704?96(Reapproved2012)StardTestMethodfWearPreventivePropertiesofLubricatingGreasesUsingthe(Falex)BlockonRingTestMachineinOscillatingMotion1ThisstardisissuedunderthefixeddesignationD3704thenumberimmediatelyf

2、ollowingthedesignationindicatestheyearofiginaladoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.

3、Scope1.1ThistestmethodcoversthedeterminationofwearpropertiesoflubricatinggreasesbymeansoftheFalexblockonringfrictionweartestmachine.1.2ThevaluesstatedinSIunitsaretoberegardedasstardexceptwhereequipmentissuppliedusinginch

4、poundunitswouldthenberegardedasstard.Themetricequivalentsofinchpoundunitsgiveninsuchcasesinthebodyofthestardmaybeapproximate.1.3Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistherespons

5、ibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse2.ReferencedDocuments2.1ASTMStards:2D1403TestMethodsfConePerationofLubricatingGreaseUsingOneQuar

6、terOneHalfScaleConeEquipmentD2714TestMethodfCalibrationOperationoftheFalexBlockonRingFrictionWearTestingMachineG40TerminologyRelatingtoWearErosion3.Terminology3.1Definitions:3.1.1coeff?cientoffrictionfn—intribologythedim

7、ensionlessratioofthefrictionfce(F)betweentwobodiestothenmalfce(N)pressingthesetwobodiestogether.5~FN!(1)3.1.1.1Discussion—Adistinctionisoftenmadebetweenstaticcoeff?cientoffrictionkiiccoeff?cientoffriction.G403.1.2frictio

8、nfcen—theresistingfcetangentialtotheinterfacebetweentwobodieswhenundertheactionofanexternalfceonebodymovestendstomoverelativetotheother.G403.1.3kiiccoeff?cientoffrictionn—thecoefficientoffrictionunderconditionsofmacrosco

9、picrelativemotionbetweentwobodies.G403.1.4wearn—damagetoasolidsurfacegenerallyinvolvingprogressivelossofmaterialduetorelativemotionbetweenthatsurfaceacontactingsubstancesubstances.G404.SummaryofTestMethod4.1Thetesterisop

10、eratedwithasteeltestringoscillatingagainstasteeltestblock.Testspeedloadangleofoscillationtimespecimensurfacefinishhardnesscanbevariedtosimulatefieldconditions.4.2Thewidthofthewearscardevelopedonthetestblockfromcontactwit

11、htheoscillatingtestringismeasured.5.SignificanceUse5.1Thistestmethodisusedtodifferentiatebetweengreaseshavinghighmediumlowwearpreventivepropertiesusingoscillatingmotion.Theuserofthismethodshoulddeterminetohisownsatisfact

12、ionwhetherresultsofthistestprocedurecrelatewithfieldperfmanceotherbenchtestmachines.6.Apparatus6.1FalexBlockonRingTestMachinewithFrictionRecder3describedindetailinAnnexA1illustratedinFig.1.1Thistestmethodisunderthejurisd

13、ictionofASTMCommitteeD02onPetroleumProductsLiquidFuelsLubricantsisthedirectresponsibilityofSubcommitteeD02.L0.05onSolidLubricants.CurrenteditionapprovedApril152012.PublishedApril2012.iginallyapprovedin1978.Lastprevioused

14、itionapprovedin2006asD3704–96(2012).DOI:10.1520D370496R12.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheAST

15、Mwebsite.3ThesolesourceofsupplyoftheapparatusknowntothecommitteeatthistimeisFalexCp.1020AirparkDr.SugarGroveIL60554.IfyouareawareofalternativesupplierspleaseprovidethisinfmationtoASTMInternationalHeadquarters.Yourcomment

16、swillreceivecarefulconsiderationatameetingoftheresponsibletechnicalcommittee1whichyoumayattend.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates18.CalibrationStardization8.1RunT

17、estMethodD2714calibrationproceduretoensuregoodmechanicaloperationoftestequipment.49.Procedure9.1Befeeachtestcleantheapparatuswithappropriatesolventchosenin7.3blowdry.9.2anewtestringblockwashwithsolventdrywithcleansoftclo

18、thpaper.9.3Thegreasesampleshouldbewked60strokesonehalfscaleonequarterscale(TestMethodsD1403)pritostartingruns.Onewkingperrunningdayissufficient.Fthosewhomaynothavesmallwkerswkingbrieflywithaspatulaissufficient.9.4Adjustt

19、heamplitudeofoscillationfthedesiredarc.9.5Lubricatethequartersegment(theballseat)ofthespecimenholderwiththegreasetobetested.9.6Withnoweightsonthebalerodapplyathinfilmofthetestgreasetothesurfaceofacleantestblockmountthete

20、stblockinthequartersegment(ballseat)positionbothsecurelyinthespecimenholder.Onmodelswiththeballseattightenthesetscrewssothattheblockisheldlightly.Applyathinfilmofthetestgreasealongthetestsurfaceoftheringslipitonoverthete

21、stshafttakingcarethatgreasedoesnotgetontheseatthetestsurfacesarenotscratched.Alternativelytheungreasedringmaybeslippedontighteneddowngreasecarefullyappliedtotheringsurfacewithasmallthinspatula.Screwonthelockwasherlocknut

22、tightenwithatquewrenchto250in.lb(28.25Nm).Applyadditionaltestgreasetotheareaofthetestblockespeciallytheareathatoverlapstheringonbothsidesoftheblock.(Totalgreaseis1to2g.)9.7Theblockshouldbeseatedsquarelyontheringotherwise

23、awedgeshapedscarwillresult.Onewaytoaccomplishthisistoloosentheblockintheholderapplya3lb(1.3kg)loadonthebalerodrotatetheringbyhbackfthafewtimes.Thisalsoservestodistributethegreasebetweenblockring.Theblockisthentightenedse

24、curelyfrunning.Ifgreasehaspulledawayfromtheblockduringtheaboveoperationitshouldbereappliedasdescribedin9.6.9.8Placethedesiredweightsonthebalerodkeepinginmindthestardmachineisbuiltwitha10:1ratiolever.Makesurethetwoloadlev

25、erreferencemarkersarealigned.Ifsoequippedpositionthefrictionfcecutofflevelat40lb(18.14kg).9.9Startingatzerobringthespeeduprapidlytothepredeterminedsettingnecessarytogivethedesiredspeed.Measuretimeassoonasoscillationbegin

26、s.9.10Runfdesiredtime.Disassemblewipeofftheblockring.Usingtherequiredmicroscopemeasurethescarwidthonthetestblockinthecenter1mmawayfromeachedgetothenearest0.01mm.Repttheaverageofthesethreemeasurements.9.11Reptanyunusualob

27、servationanautomaticfrictioncutoff.Ifamachinemalfunctionsatestblockhasawedgeshapedscarthetestshouldbererun.10.PrecisionBias10.1Precision—Theprecisionofthistestmethodisnotknowntohavebeenobtainedinaccdancewithcurrentlyacce