NF A06-303-1962 钢和铸铁的化学分析.锰的分光光度计法测定
作者:标准资料网 时间:2024-05-19 22:40:09 浏览:9688
来源:标准资料网
【英文标准名称】:Chemicalanalysisofsteelandcastiron.Spectrophotometricdeterminationofmanganese.
【原文标准名称】:钢和铸铁的化学分析.锰的分光光度计法测定
【标准号】:NFA06-303-1962
【标准状态】:现行
【国别】:法国
【发布日期】:1962-10-01
【实施或试行日期】:1962-10-31
【发布单位】:(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:含量测定;化学分析和试验;钢;高碘酸盐;钠无机化合物;化学分析;铸铁;分光光度测量分析;分光光度法;锰;高碘酸钠
【英文主题词】:Cast-iron;Chemicalanalysisandtesting;Determinationofcontent;Manganese;Spectrophotometry;Steels
【摘要】:
【中国标准分类号】:H11
【国际标准分类号】:77_080_01
【页数】:4P.;A4
【正文语种】:其他
【英文标准名称】:StandardPracticeforElectromagnetic(Eddy-Current)SortingofFerrousMetals
【原文标准名称】:黑色金属的电磁(涡电流)分级的标准实施规程
【标准号】:ASTME566-2009
【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】:absolutecoil;comparatorcoils;electromagneticsorting;sorting;Absolutecoilmethod;Comparatorcoils;Compositionanalysis--metals/alloys;Eddycurrentexamination;Electromagnetic(eddycurrent)testing;Ferrousmetals/alloys;Magneticpropertie
【摘要】:Absoluteandcomparativemethodsprovideameansforsortinglargequantitiesofferrouspartsofstockwithregardtocomposition,condition,structure,orprocessing,oracombinationthereof.Thecomparativeortwo-coilmethodisusedwhenhigh-sensitivitytestingisrequired.Theadvantageofthismethodisthatitalmostcompletelysuppressesallinternalorexternaldisturbancessuchastemperaturevariationsorstraymagneticfields.Thetwo-coilmethodisnormallyusedwhenharmonicevaluationisemployedforsorting.Theabilitytoaccomplishsatisfactorilythesetypesofseparationsisdependentupontherelationofthemagneticcharacteristicsoftheferromagneticpartstotheirphysicalcondition.Thesemethodsmaybeusedforhigh-speedsortinginafullyautomatedsetupwherethespeedoftestingmayapproachtenspecimensperseconddependingontheirsizeandshape.Thesuccessofsortingferromagneticmaterialdependsmainlyontheproperselectionofmagneticfieldstrengthandfrequencyofsignalinthetestcoil,fillfactor,andvariablespresentinthesample.Thedegreeofaccuracyofasortwillbeaffectedgreatlybythecouplingbetweenthetestcoilfieldandthetestspecimenandtheaccuracywithwhichthespecimenisheldinthetestcoilfieldduringthemeasuringperiod.Whenhighcurrentsareusedinthetestcoil,ameansshouldbeprovidedtomaintainaconstanttemperatureofthereferencespecimeninordertominimizemeasurementdrift.1.1Thispracticecoverstheprocedureforsortingferrousmetalsusingtheelectromagnetic(eddy-current)method.Theprocedurerelatestoinstrumentsusingabsoluteorcomparator-typecoilsfordistinguishingvariationsinmass,shape,conductivity,permeability,andothervariablessuchashardnessandalloythataffecttheelectromagneticormagneticpropertiesofthematerial.Theselectionofspecimenstodeterminesortingfeasibilityandtoestablishstandardsisalsoincluded.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
