ASTM D6080-2010 确定液压用液体的粘度特性的标准实施规程

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【英文标准名称】:StandardPracticeforDefiningtheViscosityCharacteristicsofHydraulicFluids
【原文标准名称】:确定液压用液体的粘度特性的标准实施规程
【标准号】:ASTMD6080-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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.N0.10
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:Brookfieldviscosity;hydraulicfluid;shearstability;viscosity;viscosityclassification;Brookfieldviscometer;Classification(standards)--petroleumproducts;Hydraulicfluids/oils;Performance--petroleumproducts/applications;Sheartesting--petrol
【摘要】:Thepurposeofthispracticeistoestablishviscositydesignationsderivedfromviscositiesmeasuredbytestmethodswhichhaveameaningfulrelationshiptohydraulicfluidperformance.Thispermitslubricantsuppliers,lubricantusers,andequipmentdesignerstohaveauniformandcommonbasisfordesignating,specifying,orselectingtheviscositycharacteristicsofhydraulicfluids.ThispracticeisnotintendedtobeareplacementforClassificationD2422.Rather,itisanenhancementintendedtoprovideabetterdescriptionoftheviscositycharacteristicsoflubricantsusedashydraulicfluids.Thispracticeimpliesnoevaluationofhydraulicoilqualityotherthanitsviscosityandshearstabilityundertheconditionsspecified.Whileitisnotintendedforotherfunctionalfluids,thispracticemaybeusefulinhigh-shear-stressapplicationswhereviscosityindex(VI)improversareusedtoextendtheusefuloperatingtemperaturerangeofthefluid.Thispracticedoesnotapplytootherlubricantsforwhichviscosityclassificationsystemsalreadyexist,forexample,SAEJ300forautomotiveengineoilsandSAEJ306foraxleandmanualtransmissionlubricants.1.1Thispracticecoversallhydraulicfluidsbasedeitheronpetroleum,synthetic,ornaturally-occurringbasestocks.Itisnotintendedforwater-containinghydraulicfluids.1.2Fordeterminationofviscositiesatlowtemperature,thispracticeusesmillipascalx00B7;second(mPax00B7;s)astheunitofviscosity.Forreference,1mPax00B7;sisequivalentto1centipoise(cP).Fordeterminationofviscositiesathightemperature,thispracticeusesmillimetresquaredpersecond(mm2/s)astheunitofkinematicviscosity.Forreference,1mm2/sisequivalentto1centistoke(cSt).1.3Thispracticeisapplicabletofluidsranginginkinematicviscosityfromabout4to150mm2/sasmeasuredatareferencetemperatureof40x00B0;Candtotemperaturesfromx2212;50to+16x00B0;Cforafluidviscosityof750mPax00B7;s.Note18212;Fluidsoflesserorgreaterviscositythantherangedescribedin1.3areseldomusedashydraulicfluids.Anymathematicalextrapolationofthesystemtoeitherhigherorlowerviscositygradesmaynotbeappropriate.Anyneedtoexpandthesystemshouldbeevaluatedonitsownmerit.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.
【中国标准分类号】:E39
【国际标准分类号】:75_120
【页数】:6P.;A4
【正文语种】:英语