NF T90-511-13-2011 水质测定取样.第13部分:淤泥取样指南.
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来源:标准资料网
【英文标准名称】:Waterquality-Sampling-Part13:guidanceonsamplingofsludges.
【原文标准名称】:水质测定取样.第13部分:淤泥取样指南.
【标准号】:NFT90-511-13-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-07-01
【实施或试行日期】:2011-07-29
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Definitions;Examinationofsludge;Samplingmethods;Sapropel;Septictanks;Sewage;Sewagepurificationplant;Sewagesludge;Sewagetreatment;Sidetesters;Sludge;Waterpollution;Waterpractice;Waterquality;Watertesting;Watertreatment;Watertreatmentplants;Waterworks
【摘要】:
【中国标准分类号】:Z16
【国际标准分类号】:13_060_45
【页数】:35P;A4
【正文语种】:其他
【英文标准名称】:StandardPracticeforSteelCasting,AusteniticAlloy,EstimatingFerriteContentThereof
【原文标准名称】:奥氏体合金钢铸件中铁素体含量估算的标准实施规程
【标准号】:ASTMA800/A800M-2010
【标准状态】:现行
【国别】:
【发布日期】:2010
【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】:A01.18
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:奥氏体;奥氏体不锈钢;铁素体;?舍费尔图;钢铸件;奥氏体不锈钢铸件;铁素含量;铁铬铸件;微观结构
【英文主题词】:austenite;austeniticstainlesssteel;ferrite;SchoeferDiagram;steelcastings;Austeniticstainlesssteelcastings;Ferritecontent;Iron-chromiumcastings;Microstructures
【摘要】:Thetensileandimpactproperties,theweldability,andthecorrosionresistanceofiron-chromium-nickelalloycastingsmaybeinfluencedbeneficiallyordetrimentallybytheratiooftheamountofferritetotheamountofausteniteinthemicrostructure.Theferritecontentmaybelimitedbypurchaseorderrequirementsorbythedesignconstructioncodesgoverningtheequipmentinwhichthecastingswillbeused.Thequantityofferriteinthestructureisfundamentallyafunctionofthechemicalcompositionofthealloyanditsthermalhistory.Becauseofsegregation,thechemicalcomposition,and,therefore,theferritecontent,maydifferfrompointtopointonacasting.Determinationoftheferritecontentbyanyoftheproceduresdescribedinthefollowingpracticeissubjecttovaryingdegreesofimprecisionwhichmustberecognizedinsettingrealisticlimitsontherangeofferritecontentspecified.Sourcesoferrorincludethefollowing:InDeterminationsfromChemicalComposition8212;Deviationsfromtheactualquantityofeachelementpresentinanalloybecauseofchemicalanalysisvariance,althoughpossiblyminorineachcase,canresultinsubstantialdifferenceintheratiooftotalferrite-promotingtototalaustenite-promotingelements.Therefore,theprecisionoftheferritecontentestimatedfromchemicalcompositiondependsontheaccuracyofthechemicalanalysisprocedure.InDeterminationsfromMagneticResponse8212;Phasesotherthanferriteandaustenitemaybeformedatcertaintemperaturesandpersistatroomtemperature.Thesemaysoalterthemagneticresponseofthealloythattheindicatedferritecontentisquitedifferentfromthatofthesamechemicalcompositionthathasundergonedifferentthermaltreatment.Also,becausethemagnetsorprobesofthevariousmeasuringinstrumentsaresmall,differentdegreesofsurfaceroughnessorsurfacecurvaturewillvarythemagneticlinkagewiththematerialbeingmeasured.InDeterminationsfromMetallographicExamination8212;Metallographicpointcountestimatesofferritepercentagemayvarywiththeetchingtechniqueusedforidentificationoftheferritephaseandwiththenumberofgridpointschosenfortheexamination,asexplainedinTestMethodE562.Theestimationofferritepercentbychemicalcompositionoffersthemostusefulandmostcommonmethodofferritecontrolduringmeltingofthemetal.Formostaccurateestimateofferritepercent,aquantitativemetallographicmethodshouldbeused.1.1Thispracticecoversproceduresanddefinitionsforestimatingferritecontentincertaingradesofausteniticiron-chromium-nickelalloycastingsthathavecompositionsbalancedtocreatetheformationofferriteasasecondphaseinamountscontrolledtobewithinspecifiedlimits.Methodsaredescribedforestimatingferritecontentbychemical,magnetic,andmetallographicmeans.1.2Thegradescoveredbythispracticeare:CF-3,CF-3A,CF-8,CF-8A,CF-3M,CF-3MA,CF-8M,CF-8C,CG-8M,andCH-10.1.3Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththepractice.1.3.1Withinthetext,theSIunitsareshowninbrackets.1.4Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuser......
【中国标准分类号】:H11
【国际标准分类号】:77_140_80
【页数】:6P.;A4
【正文语种】:
基本信息
| 标准名称： | 内胎硫化机检测方法 |
| 中标分类： |
化工 >>
化工机械与设备 >>
橡胶、塑料用机械 |
| 替代情况： | 转化为HG/T 3231-89 |
| 发布日期： | |
| 实施日期： | 1990-10-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
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所属分类： 化工 化工机械与设备 橡胶 塑料用机械
