【英文标准名称】:StandardPracticesforSamplingFerroalloysandSteelAdditivesforDeterminationofChemicalComposition
【原文标准名称】:测定化学成分用铁合金及钢添加剂的取样
【标准号】:ASTME32-1986(2006)e1
【标准状态】:现行
【国别】:
【发布日期】:1986
【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】:E01.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:抽样方法;铁合金;钢;工艺;金属;试样;添加剂;化学成分
【英文主题词】:chemicalcomposition;ferroalloys;sampling;steeladditives
【摘要】:Thesepracticesforthesamplingofmetalsandalloysareprimarilyintendedtotestsuchmaterialsforcompliancewithcompositionalspecifications.Itisassumedthatallwhousethesemethodswillbetrainedsamplerscapableofperformingcommonsamplingproceduresskillfullyandsafely.1.1Thesepracticesincludeproceduresforthesamplingofthevariousferroalloysandsteeladditives,eitherbeforeoraftershipmentfromtheplantsofthemanufacturers.Theyaredesignedtogiveresultsrepresentativeofeachlotthatwillbecomparablewiththemanufacturer''sguaranteedanalysisforthesamelot.Forcheckanalysis,thepurchasermayuseanysamplingprocedurehedesires,buttheanalyticalresultsobtainedonsuchsamplesshallnotbeabasisforcomplaintorrejection,unlesstheprocedurefollowedisofanaccuracyequivalenttothatprescribedinthesemethods.1.2Insamplingferroalloysandsteeladditives,seriouserrorsoftenoccurfromcontaminationofthesamplesbyironfromthesamplingappliances.Therefore,specialprecautionsshouldbeobservedtoavoidthissourceoferror.Metallicironmayberemovedwithamagnetfromnonmagneticalloys;itsestimationinotheralloysrequiresspecialanalyticalprocedures(Note0).Toavoidthiserror,partsofcrushersandpulverizingequipmentcontactingthesamplesshallbeofsteelorothermaterialshowingahighresistancetoabrasionofthetypeinvolved.Note0Metallicironinferrochromiumandferrosiliconmaybedeterminedasfollows:Transfer5gofthesampleofalloytoa150-mLbeaker,add25mLofHNO3(1+3),cover,boil5min,filterintoa250-mLbeaker,andwashwithhotwater.AddNH4OHinslightexcess,heattoboiling,filter,andwashwithhotwater.DissolvetheprecipitateonthepaperwithaminimumquantityofhotHCl(1+2),washthefilterwithhotwater,andtitratetheironbyastandardproceduresuchasthatdescribedinTestMethodE354.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundvaluesinparenthesisaregivenforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H11
【国际标准分类号】:77_040_30;77_100
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:Informationtechnology.Telecommunicationsandinformationexchangebetweensystems.ElementsofmanagementinformationrelatedtoOSIdatalinklayerstandards
【原文标准名称】:信息技术.系统间通讯和信息交换.与开放式系统互连(OSI)数据链接层标准相关的管理信息要素
【标准号】:BSISO/IEC10742-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-11-15
【实施或试行日期】:1999-11-15
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:远程通信;句法;信息交流;开放系统互连;协议;数据传输;抽象语法表示法一;数据处理;数据链路层
【英文主题词】:opensystemsinterconnection;informationexchange;syntax;telecommunication;datatransmission;protocols;asn.1;datalinklayer(osi);dataprocessing
【摘要】:ProvidesthespecificationofmanagementinformationwithinanOpenSystemrelatedtothoseoperationsoftheOSIDataLinkLayerspecifiedbythespecificationsinthisdocument.
【中国标准分类号】:L78
【国际标准分类号】:35_100_20
【页数】:144P;A4
【正文语种】:英语