NF P41-034-3-2008 水泥产品对人类用水的影响.试验方法.第3部分:来源于工厂生产的水泥产品的物质迁移
时间:2024-04-30 23:28:53 来源: 标准资料网 作者：标准资料网 阅读：8856
【英文标准名称】:Influenceofcementitiousproductsonwaterintendedforhumanconsumption-Testmethods-Part3:migrationofsubstancesfromfactory-madecementitiousproducts.
【原文标准名称】:水泥产品对人类用水的影响.试验方法.第3部分:来源于工厂生产的水泥产品的物质迁移
【标准号】:NFP41-034-3-2008
【标准状态】:现行
【国别】:法国
【发布日期】:2008-03-01
【实施或试行日期】:2008-03-13
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:Q11
【国际标准分类号】:13_060_20;67_250;91_100_10
【页数】:57P;A4
【正文语种】:其他
【英文标准名称】:StandardGuideforMixedFlowingGas(MFG)TestsforElectricalContacts
【原文标准名称】:电触点的混流气体试验用标准指南
【标准号】:ASTMB845-1997(2008)e1
【标准状态】:现行
【国别】:美国
【发布日期】:1997
【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】:B02.11
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:acceleratedtest;airvelocity;atmosphericcorrosion;chlorine;connector;corrosion;corrosivegastesting;electricalcontacts;environmental;humidity;hydrogensulfide;mixedflowinggas;nitrogendioxide;pollutant;reliability;sulfur;sulfurdioxi
【摘要】:Preservationofaconductingsurfaceonelectricalcontactisvitaltothecontinuedfunctioningofsuchcontacts.Contaminationofthesurfacewithinsulatinglayersformedbycorrosionprocessesisonepotentialhazard.LaboratorytestingofcontactsinMFGtestsisusedtoassesstheeffectivenessofdesignfeaturesandmaterials.MFGtestsareusedindevelopmentstudiesofprocessesandmaterialsforcontacts.Forexample,couponspecimensmaybeexposedtoMFGteststoevaluatenewcontactmaterials,layersofnewcoatingmaterialsonasupportingsubstrate,reducedcoatingthicknesses,orprotectivesurfacetreatments.MFGtestsarealsoemployedtotestthedurabilityofafinishedproductwithrespecttoatmosphericcorrosion.Forexample,finishedconnectorsmaybeexposedtoaMFGtestandtheirperformancescomparedagainsteachotheroragainstasetoffixedrequirements.Relaysorswitchcontactsmaybeexposedintheoperatedandnon-operatedconditionstocompareperformance.MFGtestsareusefulfordeterminingtheeffectivenessofconnectorhousingsandshroudsasbarrierstoingressofatmosphericcorrodantstothecontactsurfaces.Thesetestscanalsobeusedtoassessthescreeningofthemetal-to-metalcontactareasofmatedconnectors.MFGtestsareemployedasqualificationteststodetermineconnectorfailureratesinapplicationenvironmentsforwhichcorrelationbetweentestandapplicationhaspreviouslybeenestablished.ThisguideprovidestestconditionswhicharetobeappliedinconjunctionwithPracticeB827whichdefinestherequiredtestoperationandcertificationprocedures,tolerances,andreportingrequirements.WherethetestspecifierrequirescertificationsortolerancesdifferentthanthoseprovidedinPracticeB827,therequiredcertificationsortolerancesshallbepartofthetestspecification.DifferencesfromthespecificationsinPracticeB827shallbereportedinthetestreportprovidedbythetestoperatortothetestspecifier.Specificationofoneofthetestconditionsdefinedinthisdocumentintheformofastatementsuchas,x201C;PartsshallbetestedinaccordancewithASTMB845MethodZ.x201D;,implicitlyrequirestestcondition,Z,appliedaccordingtoPracticeB827.1.1Thetechniquesdescribedinthisguidepertaintomixedflowinggas(MFG)testscontainingspeciesthatareappliedtoevaluatedevicescontainingelectricalcontactssuchassliprings,separableconnectors,electromechanicalrelaysorswitchcontacts.Thesetechniquesmayberelevanttootherdevices,butitistheresponsibilityoftheusertodeterminesuitabilitypriortotesting.1.2TheMFGtestsdescribedinthisguidearedesignedtoacceleratecorrosivedegradationprocesses.Theseaccelerationsaredesignedsuchthatthedegradationoccursinamuchshortertimeperiodthanthatexpectedforsuchprocessesintheintendedapplicationenvironmentofthedevicebeingtested.Applicationenvironmentscanvarycontinuouslyfrombenigntoaggressivelycorrosive.Connectorsandcontactswithinclosedelectroniccabinetsmaybeaffectedbyanenvironmentofdifferentseveritythantheenvironmentontheoutsideofsuchcabinets.Ingeneral,indoorenvironmentsaredifferentthanoutdoorenvironments.TheMFGtestsdescribedherein,beingdiscreteembodimentsofspecificcorrosiveconditions,cannotberepresentativeofallpossibleapplicationenvironments.Itistheresponsibilityofthetestspecifiertoassurethepertinenceofagiventestconditiontothespecifier''sapplicationcondition.1.3TheMFGtestsdescribedhereinarenotd......
【中国标准分类号】:K14
【国际标准分类号】:29_120_20
【页数】:11P.;A4
【正文语种】:英语
【英文标准名称】:Aluminiumandaluminiumalloys-Impactextrusionslugsobtainedfromwroughtproducts-Specification;EnglishversionofDINEN570:2007-04
【原文标准名称】:铝和铝合金.由锻制品获得冷挤压金属块.规范
【标准号】:DINEN570-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-04
【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】:
【英文主题词】:
【摘要】:Thisdocumentspecifiesthetechnicalconditionsforinspectionanddelivery,tolerancesondimensionsandformandotherrequirementsforflatorpreformedwroughtaluminiumandwroughtaluminiumalloyslugsforimpactextrusion.Itappliestoslugsproducedeitherbypunchingofrolledproductsorbycuttingofextrudedproducts.Slugscoveredinthisdocumentaresuitableforthemanufactureofimpactextrudedpartsforpackagingandindustrialapplications.
【中国标准分类号】:H61
【国际标准分类号】:77_150_10
【页数】:14P.;A4
【正文语种】:英语