ASTM D2983-2004a 用Brookfield粘度计测定机动车试验液体润滑剂的低温粘度的试验方法

作者:标准资料网 时间:2024-05-14 10:39:40  浏览:9480   来源:标准资料网

【英文标准名称】:StandardTestMethodforLow-TemperatureViscosityofLubricantsMeasuredbyBrookfieldViscometer
【原文标准名称】:用Brookfield粘度计测定机动车试验液体润滑剂的低温粘度的试验方法
【标准号】:ASTMD2983-2004a
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:石油产品;试验;润滑剂
【英文主题词】:oils-lubricating;gear,apparentviscosity;temperaturetests-petroleumproducts;viscosityofautomotivefluidlubricantsatlow-temperature;Brookfieldviscometer
【摘要】:Thelow-temperature,low-shear-rateviscosityofgearoils,automatictransmissionfluids,torqueandtractorfluids,andindustrialandautomotivehydraulicoils,AnnexA4,areofconsiderableimportancetotheproperoperationofmanymechanicaldevices.Measurementoftheviscometricpropertiesoftheseoilsandfluidsareoftenusedtospecifytheiracceptability.Thistestmethodisusedinanumberofspecifications.Thistestmethoddescribeshowtomeasureapparentviscositydirectlywithouttheerrorsassociatedwitheitherinterpolationorextrapolationofexperimentaldata.Note18212;Viscosityvaluesobtainedbyeitherinterpolationorextrapolationaresubjecttoerrorscausedbygelationornon-Newtonianresponsetorotorspeed,orboth.OnlyinthecaseofknownNewtonianoilsisinterpolationacceptableforthepurposeofcalibratingtherotorandglasscell.Ifsuchviscosityversustemperatureplotsarerequired,theycanbemadebytheprocedureoutlinedinAnnexA1.Note8212;AdaptedfromdrawingsofBrookfieldEngineeringLaboratories.FIG.1DiagramofNo.4LVCylindricalSpindle1.1ThistestmethodcoverstheuseoftheBrookfieldviscometerandalow-temperaturebathforthedeterminationofthelow-shear-rateviscosityoflubricants.Thetestmayoperateintheviscosityrangeof500to1000000mPas(cP).Thebath-controlledtemperatureisselectedwithintherangeof+5to-40176;C.1.2ThetestmethodusestheSIunit,milliPascal-second(mPas),astheunitofviscosity.(1cP=1mPas).1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:11P.;A4
【正文语种】: