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1、Designation:D5182?97(Reapproved2014)StardTestMethodfEvaluatingtheScuffingLoadCapacityofOils(FZGVisualMethod)1ThisstardisissuedunderthefixeddesignationD5182thenumberimmediatelyfollowingthedesignationindicatestheyearofigin

2、aladoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1ThistestmethodtheFschungstellefrZhnr

3、derundGetriebebau(ResearchSitefGearsTransmissions)VisualMethodcommonlyreferredtoastheFZGVisualMethodisintendedtomeasurethescuffingloadcapacityofoilsusedtolubricatehardenedsteelgears.Scingafmofabrasivewearisalsoincludedas

4、afailurecriteriainthistestmethod.Itisprimarilyusedtoassesstheresistancetoscuffingofmildadditivetreatedoilssuchasindustrialgearoilstransmissionfluidshydraulicfluids.HighEPtypeoilsfexamplethoseoilsmeetingtherequirementsofA

5、PIGL4GL5generallyexceedthecapacityofthetestrigtherefecannotbedifferentiatedwiththistestmethod.1.2ThevaluesstatedinSIunitsaretoberegardedasstard.Nootherunitsofmeasurementareincludedinthisstard.1.3Thisstarddoesnotpurpttoad

6、dressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.FspecificsafetyinfmationseeS

7、ection7Section89.29.3.1AnnexA1.2.ReferencedDocuments2.1ASTMStards:2D235SpecificationfMineralSpirits(PetroleumSpirits)(HydrocarbonDryCleaningSolvent)G40TerminologyRelatingtoWearErosion2.2DINStard:3DIN51354Teil1FZGZahnradV

8、erspannungsPrfmhine—AllgemeineArbeitsgrundlagen3.Terminology3.1Definitions:3.1.1SeealsoTerminologyG40.3.1.2abrasivewear—wearduetohardparticleshardprotuberancesfcedagainstmovingalongasolidsurface.3.1.3adhesivewear(scuff?n

9、g)—wearduetolocalizedbondingbetweencontactingsolidsurfacesleadingtomaterialtransferbetweenthetwosurfaceslossfromeithersurface.3.1.4scing—aseverefmofwearacterizedbythefmationofextensivegroovesscratchesinthedirectionofslid

10、ing.3.1.5scratches—theresultofmechanicalremovaldisplacementbothofmaterialfromasurfacebytheactionofabrasiveparticlesprotuberancesslidingacrossthesurfaces.3.2DefinitionsofTermsSpecifictoThisStard:3.2.1polishing—amildfmofab

11、rasivewearresultinginminlossofmaterialtypicallyacterizedbyasmoothfinishremovalofallpartoftheinitialgrindingmarks.4.SummaryofTestMethod4.1AnFZGGearTestMachineisoperatedatconstantspeed(1450rpm)fafixedperiod(21700revolution

12、s—approximately15min)atsuccessivelyincreasingloadsuntilthefailurecriteriaisreachedtheinitialoiltemperatureis90Cbeginningatloadstagefour(seeTable1).Thetestgearsareexaminedinitiallyaftertheprescribeddurationateachloadstage

13、fcumulativedamage(scuffing)tothegeartoothflanks.5.SignificanceUse5.1Thetransmissionofpowerinmanyautomotiveindustrialapplicationsisaccomplishedthroughtheuseofgearedsystems.Athigheroperatingspeedsitiswellknown1Thistestmeth

14、odisunderthejurisdictionofASTMCommitteeD02onPetroleumProductsLiquidFuelsLubricantsisthedirectresponsibilityofSubcommitteeD02.L0.11onTribiologicalPropertiesofIndustrialFluidsLubricates.CurrenteditionapprovedJan.12014.Publ

15、ishedFebruary2014.iginallyapprovedin1991.Lastpreviouseditionapprovedin2008asD5182–97(2008).DOI:10.1520D518297R14.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolu

16、meinfmationrefertothestard’sDocumentSummarypageontheASTMwebsite.3AvailablefromBeuthVerlagGmbH(DINDINDeutschesInstitutfurNmunge.V.)Burggrafenstrasse610787BerlinGermany.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700W

17、estConshohockenPA194282959.UnitedStates1designedwithalargeprofilemodificationwhichincreasestheirsensitivitytoadhesivewearmodesoffailure.6.3TimerMechanism—Asuitabletimerrevolutioncountermustbeusedtocontrolthenumberofrevol

18、utionsduringeachloadstageofthetest.Thetimershouldbecapableofshuttingdownthetestrigattheappropriatetime.6.4HotPlate—Ahotplatesuitableheatingdeviceisrequiredtowarmthegearsto60to80Cfassemblyontotheshafts.7.ReagentsMaterials

19、7.1MineralSpirits(StoddardSolvent).(Warning—Combustible.Vapharmful.Keepawayfromheatsparksopenflame(seeAnnexA1.1).TypeIconfmingtotherequirementsoutlinedinSpecificationD235.)8.Hazards8.1(Warning—Thistestmethodinvolvestheus

20、eofhighlyloadedgearsshaftsturningathighspeeds.Appropriateprecautionsmustbetakentoprotectpersonnel(seeAnnexA1.2).)9.PreparationofApparatus9.1TestGears—ThetestgearsarecleanedwithStoddardsolventtoremovealloftheprotectivecoa

21、ting.Insomecasesthisrequiresbrushing(softbristlebrush)ofthegearstoremoveexcessamountsofthecoatingmaterial.Eachgearistobedriedthenvisuallyinspectedfanyevidenceofdamagecrosiononthetoothflanksurfaces.Insuchcaseswheredamagec

22、rosionisfoundthesegearsshouldnotbeusedftestpurposes.9.2TestGearbox—ThetestgearboxbearingsshallbewashedthoughlywithStoddardsolventtoremovetheprevioustestoil.(Thiscanbedoneattheterminationofatestaftertheoilhasbeendrainedfr

23、omthegearboxpritodisassemblingthetestgears.)ItisrecommendedthatthegearboxbeflushedtwicewithStoddardsolventtoremovealltracesoftheprevioustestoil.Afterdrainingthesolventfromthetestgearboxtheunitshouldbeairdriedtoremoveallt

24、racesofsolvent.(Warning—Besurethegearboxtemperaturehasdecreasedbelow60CpritoaddingtheStoddardsolvent.)9.3AssemblyofTestGears—Thetestgearsspacersbearingsareheatedonahotplateotherdevicetoapproximately60to80C.Installthetest

25、gearsontheshaftswiththealignmentmarksinthepositionshowninFig.3.Completetheassemblyofthegearboxwiththeappropriatespacersbearingsfrontcover.9.3.1Ithasbeenfoundcriticalfcrectresultsthatthetestgearsareproperlyalignedontheirr

26、espectiveshafts.(Warning—Misalignmentcanleadtoerraticlowerfailloadsduetounevendistributionoftheloadonthetooth.)9.4TestOil—Add1.25Loftestoiltothetestgearbox(approximatelytothecenterlineoftheshafts).9.5FinalAssembly—Secure

27、thetopofthetestgearcaseinplacewiththe6bolts.Connecttheheatertoitspowersource.10.Procedure10.1Pritostartingatestapplyloadstage12tothesystemf2to3minwithoutrunningthemot(Table1).Thisisdonetoensureallclearancesareinthecrectw

28、kingposition.Removeallweightsbefeproceedingto10.2.10.2Withthetestgearsmountedloadclutchlockingpininplaceloadclutchboltslooseapplyloadstage1(seeTable1)totheloadingclutch.Tightentheboltsoftheloadclutch(theloadclutchboltssh

29、ouldbetightenedinastarcrosswisepatterntoatqueof100Nm)removetheweightassemblyleverarmremovetheloadclutcharrestingbolt.Startthemot(1450rpm)turnontheheaters.Runf15min(21700revolutions)thenstopmot.10.3thelockingpinloosenthel

30、oadclutchboltssothattheloadisremovedfromtheshafts.Applyloadstage2accdingtoTable1.Tightentheboltsoftheloadclutch(theloadclutchboltsshouldbetightenedinastarcrosswisepatterntoatqueof100Nm)removetheweightsleverarmremovethelo

31、adclutchlockingpin.Startthemot(1450rpm)turnontheheaters.After15min(21700revolutions)stopthemot.Repeatthissequencefloadstage3.10.4Beginningwithloadstage4allsubsequentloadstagestheprocedureisthesameasoutlinedin10.2exceptth

32、attheoiltemperaturemustbebetween9093Cpritostartingthemot.10.4.1Attheendofloadstage4eachsubsequentloadstagerecdthefinaltemperatureinspectthepiniongearfdamagewithoutremovingthegearsfromthegearbox.FIG.2SchematicofAProfileTe

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