【英文标准名称】:SpecificationforAmorphousMagneticCoreAlloysSemi-ProcessedTypes
【原文标准名称】:半成品型非晶磁芯合金规范
【标准号】:ANSI/ASTMA901-1997
【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】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:非晶形状态;磁芯;半成品;合金
【英文主题词】:semi-finishedproducts;amorphousstate;alloys;magneticcores
【摘要】:Thisspecificationcoversthegeneralrequirementstowhichflat-cast,amorphous,semi-processed,iron-basemagneticcorealloysmustconform.Thesealloysareproducedbyarapid-quenching,direct-castingprocess,resultinginmetalswithnon-crystallinestructure.Themetallicalloysaremadetomeetspecifiedmaximumcore-lossvaluesandareintendedprimarilyforcommercialpowerfrequency(50and60Hz)applicationsinmagneticdevices.Desirablecore-lossandpermeabilitycharacteristicsaredevelopedbyfurtherheattreatmentinamagneticfieldbythebuyer.Theheattreatmenttypicallyconsistsofheatingthematerialtoatemperatureof320to420?Cinadry,inertatmospherefor5to10min.Amagneticfieldmayberequiredduringannealingasdesignatedbythemanufacturer.Exactoptimumannealingconditionsdependontheprocessingofthematerialandthesizeandshapeofthedevice.Thechemical,magnetic,andphysicalpropertiesarelistedforreferenceonly.Theyaretypicalvaluesforaparticularalloyanddonotconstituteastandardspecificationforthatalloy.Someofthesealloysaresensitivetomechanicalstress.Caremustbeexercisedinminimizinganystressesonthematerialinitsfinalapplication,otherwise,itsmagneticpropertieswillbeimpairedsignificantly.Thisspecificationisdevelopedtoaidinthepurchaseoftransformergradeamorphousstrip.Itprovidesthechemical,physical,andmagneticparametersandproceduresforqualitycontroltests.Note-Formoreinformationonproceduresassociatedwiththisspecification,refertothefollowing:PracticesA34,A664,A700,andB490;TestMethodsA370andA773.Thisstandarddoesnotpurporttoaddressthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:L19
【国际标准分类号】:29_100_10;29_030
【页数】:
【正文语种】:英语


【英文标准名称】:Ethanolasablendingcomponentforpetrol-Determinationoftotaldryresidue(involatilematerial)-Gravimetricmethod
【原文标准名称】:作为汽油混合组分之一的乙醇.总干燥残渣的测定(不挥发性材料)重量法
【标准号】:BSEN15691-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-04-30
【实施或试行日期】:2009-04-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Alcohols;Automotivefuels;Blending;Chemicalanalysisandtesting;Content;Determination;Determinationofcontent;Dryresidues;Drying;Ethanol;Gasoline;Gravimetricanalysis;Gravimetry;Methods;Non-volatilematter;Petroleumproducts;Precision;Quantitativeanalysis;Samplingmethods;Testing
【摘要】:ThisEuropeanStandardspecifiesaprocedureforthedeterminationofdryresidueinethanolbygravimetric(desiccation)methodintherange(10to25)mg/100ml.NOTEInaninterlaboratorystudy[2]themethoddescribedhasbeentestedatlevelsdownto3,5mg/100ml,buttheprecisionappearedtobeinsufficientatsuchlowlevels.
【中国标准分类号】:G16
【国际标准分类号】:75_160_20
【页数】:10P.;A4
【正文语种】:英语