【astm標(biāo)準(zhǔn)】d 6200 - 01 (2012)

1、Designation:D6200?01(Reapproved2012)StardTestMethodfDeterminationofCoolingacteristicsofQuenchOilsbyCoolingCurveAnalysis1ThisstardisissuedunderthefixeddesignationD6200thenumberimmediatelyfollowingthedesignationindicatesth

2、eyearofiginaladoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thistestmethoddescribesth

3、eequipmenttheprocedurefevaluationofaquenchingoil’squenchingacteristicsbycoolingratedetermination.1.2Thistestisdesignedtoevaluatequenchingoilsinanonagitatedsystem.Thereisnocrelationbetweenthesetestresultstheresultsobtaine

4、dinagitatedsystems.1.3ThevaluesinSIunitsaretoberegardedasthestard.Thevaluesinparenthesesareprovidedfinfmationonly.1.4Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityofth

5、euserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:2D1744TestMethodfDeterminationofWaterinLiquidPetroleumProductsbyKarlFis

6、cherReagentE220TestMethodfCalibrationofThermocouplesByComparisonTechniquesE230SpecificationTemperatureElectromotiveFce(EMF)TablesfStardizedThermocouples2.2SAEStards:3AMS5665NickelAlloyCrosionHeatResistantBarsFgingsRings2

7、.3JapaneseIndustrialStards(JIS):4JISK22421980HeatTreatingOilJISK67531977Di2ethylhexylPhthalate3.Terminology3.1DefinitionsofTermsSpecifictoThisStard:3.1.1coolingcurven—thecoolingcurveisagraphicalrepresentationofthecooling

8、time(t)temperature(T)responseoftheprobe(see7.3).AnexampleisillustratedinPartBofFig.1.3.1.2coolingcurveanalysisn—theprocessofquantifyingthecoolingacteristicsofaheattreatingoilbasedonthetemperatureversustimeprofileobtained

9、bycoolingapreheatedmetalprobeassembly(seeFig.2)understardconditions.3.1.3coolingratecurven—Thecoolingratecurveisobtainedbycalculatingthefirstderivative(dTdt)ofthecoolingtimetemperaturecurve.AnexampleisillustratedinPartBo

10、fFig.1.3.1.4heattreatingoiln—ahydrocarboncontainingproductoftenderivedfrompetroleumbasestockthatisusedtomediateheattransferbetweenheatedmetalsuchasaustenitizedsteeltocontrolthemicrostructurethatisfmeduponcoolingalsocontr

11、oldisttionminimizecrackingwhichmayaccompanythecoolingprocess.3.1.5quenchseverityn—theabilityofaquenchingmediumtoextractheatfromahotmetal.54.SummaryofTestMethod4.1Determinethenickelalloyprobeassembly’scoolingtimeversustem

12、peratureafterplacingtheassemblyinafurnaceheatingto850C(1562F)thenquenchinginaheattreatingoil.Thetemperatureinsidetheprobeassemblythecoolingtimesarerecdedatedtimeintervalstoestablishacoolingtemperatureversustimecurve.Ther

13、esultingcoolingcurvemaybeusedtoevaluatequenchseverity(seeNote1).NOTE1—Fproductiontestingthefurnacetemperatureof815to857C(1500to1575F)maybeused.1ThistestmethodisunderthejurisdictionofASTMCommitteeD02onPetroleumProductsLiq

14、uidFuelsLubricantsisthedirectresponsibilityofSubcommitteeD02.L0.06onNonLubricatingProcessFluids.CurrenteditionapprovedApril152012.PublishedMay2012.iginallyapprovedin1997.Lastpreviouseditionapprovedin2007asD6200–01(2007).

15、DOI:10.1520D620001R12.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheASTMwebsite.3AvailablefromSocietyofAuto

16、motiveEngineers(SAE)400CommonwealthDr.WarrendalePA150960001:www.sae.g.4AvailablefromJapaneseStardsganization(JSA)4124AkasakaMinatoKuTokyo1078440Japan:www.jsa..ja.5BoyerH.E.CaryP.R.QuenchingDisttionControlASMInternational

17、MaterialsParkOH1988p.162.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates1inheattreatingoilioncomparisonofquenchseveritiesofdifferentheattreatingoilsnewused.6.Interferences6.1T

18、hepresenceofwaterinaheattreatingoilhasamajeffectupontheresultsobtainedwiththistestmethod.WatercontentofcalibrationfluidsshallbeconfirmedbyTestMethodD1744.Ifwaterispresentabove0.01%thecalibrationfluidshallbedriedataminimu

19、mtemperatureof102C(216F)untilTestMethodD1744indicateswatercontentatbelow0.01%.7.Apparatus7.1Furnace—Useahizontalverticalelectricalresistancetubetypefurnacecapableofmaintainingaconstantminimumtemperatureof850C(1562F)overa

20、heatedlengthofnotlessthan120mm(4.72in.)aprobepositionedinthecenteroftheheatingchamber.Thefurnaceshallbecapableofmaintainingtheprobe’stemperaturewithin62.5C(4.5F)overthespecimenlength.Thefurnacethatistheradianttubeheating

21、mediashallbeusedwithambientatmosphere.7.2MeasurementSystem—Thetemperaturetimemeasurementsystemshallbeacomputerbaseddataacquisitionsystemcapableofprovidingapermanentrecdofthecoolingacteristicsofeachoilsampletestedproducin

22、garecdofvariationinthetestprobeassemblyoftemperaturewithrespecttotimecoolingratewithrespecttotemperature.7.3Probe—Theprobeshallbecylindricalhavingadiameterof12.560.01mm(0.49260.0004in.)alengthof6060.25mm(2.36260.01in.)wi

23、tha1.45to1.65mm(0.057to0.065in.)sheathedTypeKthermocoupleinitsgeometriccenter.Theprobeshallbemadeofanickelalloy600(UNSN06600)purchasedtoSAESpecificationAMS5665whichhasanominalcompositionof76.0%Ni15.5%Cr8.0%Fe.08%C.25%max

24、Cu.Theprobeshallbeattachedtoasuppttubewithaminimumlengthof200mm(7.874in.).Thethermocouplesheathingthesuppttubeshallbethesamematerialastheprobe(seeNote2).SeeFig.2frecommendedmanufacturingdetails.NOTE2—Caremustbetakenthatt

25、heprobespecimenisnotdamagedassurfaceirregularitieswillinfluencetheresultsofthetest.7.4TransferMechanism—Oneofthefollowingshallbeusedtotransfertheheatedprobefromthefurnacetothetestfluid.7.4.1AutomatedTransferMechanism—The

26、transferfromthefurnacetotheoilshallbecompletedwithin3.0s.Immersetheprobeinthecenter0to5mm(0to0.197in.)oftheheattreatingoilcontainertoadepthwherethereis5062mm(1.9760.08in.)offluidabovebelowtheprobewhenquenched.Amechanical

27、stopshallbeusedfreproducibilityofprobeplacement.7.4.2ManualTransfer—Ifmanualtransferisusedthesamplecontainershallbeequippedwithafixturetoensurecrectplacementinthecenteroftheheattreatingoilcontainertothedepthdefinedin7.4.

28、1.Atimershallbeusedtoensureamaximumtransfertimeof3.0s.7.5SampleContainer—Acontainerpreferablyadamageresistanttallfmvesselhavinganinternaldiameterof11565mm(4.52860.197in.)shallbeedtoprovide50mL(1.97in.)offluidabovebelowth

29、eprobewhenquenched.Itisrecommendedthat2000650mLofoilbeused.Theresultingcoolingcurvewillbedependentonthetemperatureriseduringthequenchonthetotalfluidvolume.Therefethecoolingcurveanalysisshallbeperfmedwiththesamevolumeoffl

30、uid.7.6OilTemperatureMeasurement—Anytemperaturedetectiondevicemaybeusedthatiscapableofmeasuringoiltemperaturetowithin61C(1.8F)duringdrying.7.7Timer—Graduatedinsecondsminutesmaybepartofacomputerclock.8.ReagentsMaterials8.

31、1ReferenceQuenchingFluid—Areferencequenchingfluidshallbeusedfinitialregularsystemcalibration.TheprimaryreferencefluidasdescribedintheWolfsonEngineeringGroupSpecification6exhibitsthefollowingcoolingacteristics:Timetocoolt

32、o600C(1112F)1214sTimetocoolto400C(752F)1921sTimetocoolto200C(392F)5055sCoolingratemax4753Cs(8595Fs)Temperatureofthemaximumcoolingrate490530C(914986F)Coolingrateat300C(572F)68Cs(10.814.4Fs)8.1.1Theseacteristicsarebasedonq

33、uenchinga2000650mLvolumeoftheprimaryreferencefluidinthesamplecontainerdescribedin7.5accdingtotheprocedureoutlinedinSection13.8.1.2AsecondaryreferencefluidsuchasJISStardsK2242K6753maybeusedprovidedthatsufficientstatistica

34、lcoolingcurvetestinghasbeenconductedsothatresultsaretraceabletothesixcoolingacteristicsoftheprimaryreferencefluid.8.1.3Thereferencefluidsshallbestedinasealedcontainerwhennotinuseshallbereplacedafter200quenchestwoyearswhi

35、cheverissooner.8.2CleaningSolvent—Ahydrocarbonsolventthatwillevapateatroomtemperatureleavingnoresidue(WarningFlammable.Harmfulifinhaled.).8.3PolishingPaper600gritEmery.8.4Clothlintlessabsbent.9.CleaningConditioning9.1Cle

36、aningUsedProbes—Wipeprobewithalintlessclothabsbentpaperafterremovalfromtheoilpritoreturningtothefurnace.(Warning—Theprobeshallalwaysbeconsideredhotastemperaturebelowvisualhottemperaturescanstillcauseinjurytotheskin(Warni

37、ng—Donotusecleaningsolventnearthefurnaceopeningespeciallywithautomatedtransfermechanisms.).)Acleaningsolventmaybeusedbutcareshouldbetakenthattheprobeisbelow50C(122F).6AvailablefromWolfsonHeatTreatmentCentreAstonUniversit