DIN 51554-1-1978 矿物油的检验.用巴德(Baader)法试验对老化的敏感度.目的、取样、老化试验
作者:标准资料网 时间:2024-05-22 06:01:03 浏览:9627
来源:标准资料网
【英文标准名称】:Testingofmineraloils;TestofsusceptibilitytoageingaccordingtoBaader;Purpose,sampling,ageing
【原文标准名称】:矿物油的检验.用巴德(Baader)法试验对老化的敏感度.目的、取样、老化试验
【标准号】:DIN51554-1-1978
【标准状态】:现行
【国别】:德国
【发布日期】:1978-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:老化;准备;试验;仪器;抽样方法;矿物油
【英文主题词】:Ageing(materials);Instruments;Mineraloils;Preparation;Samplingmethods;Testing
【摘要】:Testingofmineraloils;testingofageingaccordingtoBaader;object,sampling,ageingEssaisdeshuilesminérales;essaidevieillissementd'aprèslaméthodeBaader;objet,échantillonnage,vieillissement
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:2P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforDeterminationoftheBreakawayFrictionCharacteristicsofRollingElementBearings
【原文标准名称】:测定滚动体轴承破裂摩擦特性的标准试验方法
【标准号】:ASTMG182-2006
【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】:G02.50
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:轴承;测定;元件;摩擦;滚动轴承;滚动体;试验
【英文主题词】:coefficientofrollingfriction;frictiontesting;rolling;rollingfriction
【摘要】:Thistestisasimple,effectivewayofdeterminingtheabilityofbearingstorollfreely.Mostbearingmanufacturersdonotsupplyinformationonthebreakawayfrictioncoefficientoftheirproductsandifthisisadesignfactor,usersoftenbuycandidatebearingsandtrythemuntiltheyfindonethatappearstooperatefreerthantheothers.Thistestallowsquantificationofthebreakawayfrictioncharacteristicsofbearings.Thistestassessesthefrictionofabearingasatribosystemwhichincludesitsconstructionandlubrication.Ithasshowntocorrelatewithuse.Ifabearinghasalowbreakawayangleinthistest,itsbreakawayfrictionwillbelowerinservicethanthesamesizebearingsthatdisplayedahigherbreakawayangleinthistest.Breakawayfrictionofbearingsisimportantininstrumentswhereforcesarelightandthebearingsareusedaspivotsratherthanforcontinuedrotation.Lowfrictionisoftenimperativeforproperdeviceoperation.Bearingswithlowbreakawayfrictionareoftensoughtforwebhandlingrollers.Manyrollersaredrivenonlybytangentialwebcontactandslippagecanoftendamagetheweb.Lowfrictionbearingsarerequired.Thistestisusefulforscreeningbearingsforanyapplicationswherebreakawayfrictionisadesignconcern.1.1ThistestmethodisanextensionofTestMethodG164andusesaninclinedplaneandapaperclipridertodetectthepresenceorabsenceoflubricantsonthesurfacesofflexiblewebs.Astudytoidentifyfreespinningorlowrollingfrictionbearingsindicatedthatthepaperclipfrictiontestcouldbeusedforrollingfrictionbysimplyreplacingthepaperclipwitharollingelementbearingonanaxle.Theangleoftheinclinedplaneatinitiationofrollingisthebreakawayangle.Thistestmethodcanbeusedtomeasuretheangleatbreakawayofsmalldiameter(upto100mmoutsidediameter)rollingelementbearings.Thebearingsthathavebeentestedinthedevelopmentofthismethodareconventionalballbearingswithdifferentseparators,seals,anddifferentconditionsoflubrication(none,oil,greases,andsoforth),butthereisnotechnicalreasonwhythistestmethodwouldnotworkwithbearingsofotherdesign,includingplainbearings.Rollingelementbearingslikeanyslidingsystemcanhavefrictioncharacteristicsatbreakawaythataredifferentthanrollingcontinuously.Asisthecasewithmostinclinedplanefrictiontests,thetestonlyproducesthefrictioncharacteristicattheonsetofmeasurablerolling,usingtheangle()whenmeasurablerollingcommences.Theobjectiveofthistestisanassessmentofbreakawayrollingfrictioncharacteristicstoassistmachinedesignersintheselectionofrollingelementbearingsforinstrumentpivotsandthelikewherebreakawayfrictionisaconcern.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J11
【国际标准分类号】:21_100_20
【页数】:5P.;A4
【正文语种】:
【英文标准名称】:Calibration-CalibrationLaboratoriesandMeasuringandTestEquipment-GeneralRequirements
【原文标准名称】:校准.校准实验室及计量和试验设备.一般要求
【标准号】:ANSI/NCSLZ540.1-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:校正;测量误差;测量;测量不确定度;计量学;质量
【英文主题词】:Calibration;Errorsinmeasuring;Measurement;Measuringincertainity;Metrology;Quality
【摘要】:
【中国标准分类号】:N61
【国际标准分类号】:03_120_20;17_020
【页数】:
【正文语种】:英语
