【英文标准名称】:StandardTestMethodforMeasuringViscosityatHighTemperatureandHighShearRatebyTapered-PlugViscometer
【原文标准名称】:高温和高剪切速率下用锥塞粘度计测量粘度的标准试验方法
【标准号】:ASTMD4741-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D02.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:润滑剂;测量;石油产品;试验;粘度
【英文主题词】:dynamicviscosity;highshearviscosity;hightemperature;HTHS;rotationalviscometer
【摘要】:Viscositymeasuredundertheconditionsofthistestmethodisconsideredtoberepresentativeofthatatthetemperaturesandshearratesbutnotthepressuresinthejournalbearingsofinternalcombustionenginesunderoperatingconditions.Therelevanceoftheseconditionstothemeasurementofengine-oilviscosityhasbeendiscussedinmanypublications.61.1Thistestmethodcoversthelaboratorydeterminationoftheviscosityofoilsat150Cand1106s-1andat100Cand1106s-1,usinghighshearratetapered-plugviscometermodelsBE/CorBS/C.1.2Newtoniancalibrationoilsareusedtoadjusttheworkinggapandforcalibrationoftheapparatus.Thesecalibrationoilscoverarangefromapproximately1.8to5.9mPa-s(cP)at150Cand4.2to18.9mPa-s(cP)at100C.ThistestmethodshouldnotbeusedforextrapolationtohigherviscositiesthanthoseoftheNewtoniancalibrationoilsusedforcalibrationoftheapparatus.Ifitissoused,theprecisionstatementwillnolongerapply.1.3Anon-Newtonianreferenceoilisusedtocheckthattheworkingconditionsarecorrect.Theexactviscosityappropriatetoeachbatchofthisoilisestablishedbytestingonanumberofinstrumentsindifferentlaboratories.TheagreedvalueforthisreferenceoilmaybeobtainedfromthechairmanoftheCoordinatingEuropeanCouncil(CEC)SurveillanceGroupforCECL-36-A90,orfromthedistributor.1.4Applicabilitytoproductsotherthanengineoilshasnotbeendeterminedinpreparingthistestmethod.1.5Thistestmethodusesthemillipascalseconds,mPa-s,astheunitofviscosity.Forinformation,theequivalentcgsunit,centipoise,cP,isshowninparentheses.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N51
【国际标准分类号】:75_100
【页数】:5P.;A4
【正文语种】: