IEC 60974-10 AMD 1-2004 弧焊设备.第10部分:电磁兼容性要求.修改件1
作者:标准资料网 时间:2024-04-29 07:43:56 浏览:8009
来源:标准资料网
【英文标准名称】:Arcweldingequipment-Part10:Electromagneticcompatibility(EMC)requirements;Amendment1
【原文标准名称】:弧焊设备.第10部分:电磁兼容性要求.修改件1
【标准号】:IEC60974-10AMD1-2004
【标准状态】:作废
【国别】:国际
【发布日期】:2004-08
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC26
【标准类型】:()
【标准水平】:()
【中文主题词】:电气安全;电焊;电气工程;防电击;试验;焊接;抗扰性;弧焊电缆;电弧焊接设备;焊接设备;合格试验;极限(数学);电弧焊接;电磁兼容性;发射;电焊设备;干扰抑制;规范(验收)
【英文主题词】:Arcwelding;Arcweldingcables;Arc-weldingequipment;Electricwelding;Electricweldingequipment;Electricalengineering;Electricalsafety;Electromagneticcompatibility;EMC;Emission;Immunity;Interferencerejections;Limits(mathematics);Protectionagainstelectricshocks;Qualificationtests;Specification(approval);Testing;Welding;Weldingequipment
【摘要】:
【中国标准分类号】:J64
【国际标准分类号】:25_160_30;33_100_01
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforStaticandKineticCoefficientsofFrictionofPlasticFilmandSheeting
【原文标准名称】:测定塑料薄膜和薄板静摩擦和动摩擦系数的标准试验方法
【标准号】:ASTMD1894-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D20.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:friction;kineticcoefficientoffriction;plasticfilm;plasticsheeting;slip;staticcoefficientoffriction;Coefficientoffriction(COF)--plastics;Kineticfrictionanalysis;Plasticsheetandfilm;Staticcoefficientoffriction;Statictests--plas
【摘要】:Measurementsoffrictionalpropertiesmaybemadeonafilmorsheetingspecimenwhenslidingoveritselforoveranothersubstance.Thecoefficientsoffrictionarerelatedtotheslippropertiesofplasticfilmsthatareofwideinterestinpackagingapplications.Thesemethodsyieldempiricaldataforcontrolpurposesinfilmproduction.Correlationoftestresultswithactualperformancecanusuallybeestablished.Thistestmethodincludestestingattemperaturesotherthan23x00B0;Cbyheatingonlytheplanewhilethesledisatambienttemperature.Slippropertiesaregeneratedbyadditivesinsomeplasticfilms,forexample,polyethylene.Theseadditiveshavevaryingdegreesofcompatibilitywiththefilmmatrix.Someofthembloom,orexudetothesurface,lubricatingitandmakingitmoreslippery.Becausethisbloomingactionmaynotalwaysbeuniformonallareasofthefilmsurface,valuesfromthesetestsmaybelimitedinreproducibility.Thefrictionalpropertiesofplasticfilmandsheetingmaybedependentontheuniformityoftherateofmotionbetweenthetwosurfaces.Careshouldbeexercisedtoensurethattherateofmotionoftheequipmentisascarefullycontrolledaspossible.Dataobtainedbytheseproceduresmaybeextremelysensitivetotheageofthefilmorsheetandtheconditionofthesurfaces.Thebloomingactionofmanyslipadditivesistime-dependent.Forthisreason,itissometimesmeaninglesstocompareslipandfrictionpropertiesoffilmsorsheetsproducedatdifferenttimes,unlessitisdesiredtostudythiseffect.Frictionalandslippropertiesofplasticfilmandsheetingarebasedonmeasurementsofsurfacephenomena.Whereproductshavebeenmadebydifferentprocesses,orevenondifferentmachinesbythesameprocess,theirsurfacesmaybedependentontheequipmentoritsrunningconditions.Suchfactorsmustbeweighedinevaluatingdatafromthesemethods.Themeasurementofthestaticcoefficientoffrictionishighlydependentontherateofloadingandontheamountofblockingoccurringbetweentheloadedsledandtheplatformduetovariationintimebeforemotionisinitiated.Careshouldbeexercisedtomakecertainthatthespeedofresponseoftherecorder,eitherelectronicormechanical,isnotexceeded.Formanymaterials,theremaybeaspecificationthatrequirestheuseofthistestmethod,butwithsomeproceduralmodificationsthattakeprecedencewhenadheringtothespecification.Therefore,itisadvisabletorefertothatmaterialspecificationbeforeusingthistestmethod.Table1ofClassificationSystemD4000liststheASTMmaterialsstandardsthatcurrentlyexist.1.1Thistestmethodcoversdeterminationofthecoefficientsofstartingandslidingfrictionofplasticfilmandsheetingwhenslidingoveritselforothersubstancesatspecifiedtestconditions.Theprocedurepermitstheuseofastationarysledwithamovingplane,oramovingsledwithastationaryplane.Bothproceduresyieldthesamecoefficientsoffrictionvaluesforagivensample.Note18212;Forthefrictionalcharacteristicsofplasticfilmspartiallywrappedaroundacylinder,orcapstan,seeTestMethodG143underthejurisdictionofASTMSubcommitteeG02.50.1.2Testdataobtainedbythistestmethodisrelevantandappropriateforuseinengineeringdesign.1.2.1Asanoptiontothistest,coefficientoffrictionmayberunattemperaturesotherthan23x00B0;Cbyheatingonlytheplanewhilethesledisatambienttemperature.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.
