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【英文标准名称】:StandardPracticeforElectromagnetic(Eddy-Current)SortingofNonferrousMetals
【原文标准名称】:有色金属的电磁(涡流)分类标准实施规程
【标准号】:ASTME703-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E07.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:electromagnetic(eddycurrent)examination;nonferrousmetals;sorting;Absolutecoilmethod;Comparativecoilmethod;Comparisontechniques;Eddycurrentexamination;Electromagnetic(eddycurrent)testing;Encirclingcoilmethod;Magneticproperties;N
【摘要】:Absoluteandcomparativemethodsprovideameasureforsortinglargequantitiesofnonferrouspartsorstockwithregardtocompositionorcondition,orboth.Thecomparativeortwo-coilmethodisusedwhenhigh-sensitivityexaminationisrequired.Theadvantageofthismethodisthatitalmostcompletelysuppressesinterferences.Theabilitytoaccomplishthesetypesofseparationssatisfactorilyisdependentupontherelationoftheelectriccharacteristicsofthenonferrouspartstotheirphysicalcondition.Thesemethodsmaybeusedforhigh-speedsortinginafullyautomatedsetupwherethespeedofexaminationmayapproachmanyspecimensperseconddependingontheirsizeandshape.Successfulsortingofnonferrousmaterialdependsmainlyonthevariablespresentinthesampleandtheproperselectionoffrequencyandfillfactor.Theaccuracyofasortwillbeaffectedgreatlybythecouplingbetweenthetestcoilfieldandtheexaminedpartduringthemeasuringperiod.1.1Thispracticedescribesaprocedureforsortingnonferrousmetalsusingtheelectromagnetic(eddy-current)method.Theprocedureisintendedforusewithinstrumentsusingabsoluteorcomparator-typecoilsfordistinguishingvariationsinmass,shape,conductivity,andothervariablessuchasalloy,heattreatment,orhardnessthatmaybecloselycorrelatedwiththeelectricalpropertiesofthematerial.Selectionofsamplestoevaluatesortingfeasibilityandtoestablishstandardsisalsodescribed.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:英语