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【英文标准名称】:StandardSpecificationforAmorphousMagneticCoreAlloys,Semi-ProcessedTypes
【原文标准名称】:半成品型非晶形磁芯合金标准规范
【标准号】:ASTMA901-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:A06.02
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:amorphous;coercivefieldstrength;coreloss;induction;residualinduction;specificexcitingpower;Amorphousmagneticmaterial;Commercialpowerfrequencies;Ironalloys--specifications;Magneticmaterials/applications--specifications
【摘要】:1.1Thisspecificationcoversthegeneralrequirementstowhichflat-cast,amorphous,semi-processed,iron-basemagneticcorealloysmustconform.1.2Thesealloysareproducedbyarapid-quenching,direct-castingprocess,resultinginmetalswithnoncrystallinestructure.Themetallicalloysaremadetomeetspecifiedmaximumcore-lossvaluesandareintendedprimarilyforcommercialpowerfrequency(50-and60-Hz)applicationsinmagneticdevices.Desirablecore-lossandpermeabilitycharacteristicsaredevelopedbyfurtherheattreatmentinamagneticfieldbythepurchaser.Theheattreatmenttypicallyconsistsofheatingthematerialtoatemperatureof320to420x00B0;Cinadry,inertatmospherefor5to10min,althoughsoaktimesofupto2hmaybeusedforlargetransformercores.Amagneticfieldmayberequiredduringannealingasdesignatedbytheproducer.Exactoptimumannealingconditionsdependontheprocessingofthematerialandthesizeandshapeofthedevice.1.3Someofthesealloysaresensitivetomechanicalstress.Caremustbeexercisedinminimizinganystressesonthematerialinitsfinalapplication,otherwise,itsmagneticpropertieswillbeimpairedsignificantly.1.4Thisspecificationisdevelopedtoaidinthepurchaseoftransformergradeamorphousstrip.Itprovidesthechemical,physical,andmagneticparametersandproceduresforqualitycontroltests.1.5Thevaluesstatedincustomary(cgs-emuandinch-pound)unitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitswhichareprovidedforinformationonlyandarenotconsideredstandard.Note18212;Formoreinformationonproceduresassociatedwiththisspecification,refertothefollowing:PracticesA34/A34M,A664,A700,andB490;TestMethodsA370andA773/A773M.1.6Thisstandarddoesnotpurporttoaddressthesafetyconcernsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H53
【国际标准分类号】:29_100_10
【页数】:4P.;A4
【正文语种】:英语