GB/T 9095-1988 烧结铁基材料 渗 碳或碳氮共渗硬化层深度的测定
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基本信息
| 标准名称： | 烧结铁基材料 渗 碳或碳氮共渗硬化层深度的测定 |
| 英文名称： | Measurement on the carburizing or nitro-caburizing harden case depth of sintering iron-based material |
| 中标分类： |
冶金 >>
粉末冶金 >>
粉末冶金材料与制品 |
| ICS分类： |
冶金 >>
金属材料试验 >>
金属材料无损检测
|
| 替代情况： | 被GB/T 9095-2008代替 |
| 发布部门： | 中国机械工业联合会 |
| 发布日期： | 1988-04-25 |
| 实施日期： | 1989-01-01 |
| 首发日期： | 1988-04-25 |
| 作废日期： | 2009-02-01 |
| 主管部门： | 中国机械工业联合会 |
| 归口单位： | 中国机械工业联合会 |
| 起草单位： | 第一汽车制造厂散热器厂 |
| 出版日期： | 1900-01-01 |
| 页数： | 6页 |
适用范围
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所属分类： 冶金 粉末冶金 粉末冶金材料与制品 冶金 金属材料试验 金属材料无损检测
【英文标准名称】:StandardPracticeforEstimateoftheHeatGainorLossandtheSurfaceTemperaturesofInsulatedFlat,Cylindrical,andSphericalSystemsbyUseofComputerPrograms
【原文标准名称】:用计算机程序估测绝热的平面系统、圆柱形和球形系统的表面温度及吸热或热损失的标准实施规范
【标准号】:ASTMC680-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:C16.30
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:computerprogram;heatflow;heatgain;heatloss;pipe;thermalinsulation;Algorithms;Computerprograms;Cylindricalthermalinsulation;Flatthermalinsulation;Heatingtests--thermalinsulation;Insulatedflatsurfaces/pipes;Insulatedpipe/equi
【摘要】:Manufacturersofthermalinsulationexpresstheperformanceoftheirproductsinchartsandtablesshowingheatgainorlossperunitsurfaceareaorunitlengthofpipe.Thisdataispresentedfortypicalinsulationthicknesses,operatingtemperatures,surfaceorientations(facingup,down,horizontal,vertical),andinthecaseofpipes,differentpipesizes.Theexteriorsurfacetemperatureoftheinsulationisoftenshowntoprovideinformationonpersonnelprotectionorsurfacecondensation.However,additionalinformationoneffectsofwindvelocity,jacketemittance,ambientconditionsandotherinfluentialparametersmayalsoberequiredtoproperlyselectaninsulationsystem.Duetothelargenumberofcombinationsofsize,temperature,humidity,thickness,jacketproperties,surfaceemittance,orientation,andambientconditions,itisnotpracticaltopublishdataforeachpossiblecase,Refs(31,32).Usersofthermalinsulationfacedwiththeproblemofdesigninglargethermalinsulationsystemsencountersubstantialengineeringcosttoobtaintherequiredinformation.Thiscostcanbesubstantiallyreducedbytheuseofaccurateengineeringdatatables,oravailablecomputeranalysistools,orboth.Theuseofthispracticebybothmanufacturersandusersofthermalinsulationwillprovidestandardizedengineeringdataofsufficientaccuracyforpredictingthermalinsulationsystemperformance.However,itisimportanttonotethattheaccuracyofresultsisextremelydependentontheaccuracyoftheinputdata.Certainapplicationsmayneedspecificdatatoproducemeaningfulresults.Theuseofanalysisproceduresdescribedinthispracticecanalsoapplytodesignedorexistingsystems.Intherectangularcoordinatesystem,PracticeC680canbeappliedtoheatflowsnormaltoflat,horizontalorverticalsurfacesforalltypesofenclosures,suchasboilers,furnaces,refrigeratedchambersandbuildingenvelopes.Inthecylindricalcoordinatesystem,PracticeC680canbeappliedtoradialheatflowsforalltypesofpipingcircuits.Inthesphericalcoordinatesystem,PracticeC680canbeappliedtoradialheatflowstoorfromstoredfluidssuchasliquefiednaturalgas(LNG).PracticeC680isreferencedforusewithGuideC1055andPracticeC1057forburnhazardevaluationforheatedsurfaces.Infraredinspection,in-situheatfluxmeasurements,orbothareoftenusedinconjunctionwithPracticeC680toevaluateinsulationsystemperformanceanddurabilityofoperatingsystems.Thistypeofanalysisisoftenmadepriortosystemupgradesorreplacements.Allporousandnon-poroussolidsofnaturalorman-madeoriginhavetemperaturedependentthermalconductivities.Thechangeinthermalconductivitywithtemperatureisdifferentfordifferentmaterials,andforoperationatarelativelysmalltemperaturedifference,anaveragethermalconductivitymaysuffice.Thermalinsulatingmaterials(kx003C;0.85{Btux00B7;in}/{hx00B7;ft2x00B7;x00B0;F})areporoussolidswheretheheattransfermodesincludeconductioninseriesandparallelflowthroughthematrixofsolidandgaseousportions,radiantheatexchangebetweenthesurfacesoftheporesorinterstices,aswellastransmissionthroughnon-opaquesurfaces,andtoalesserextent,convectionwithinandbetweenthegaseousportions.Withtheexistenceofradiationandconvectionmodesofheattransfer,themeasuredvalueshouldbecalledapparentthermalconductivityasdescribedinTerminologyC168.Themainreasonforthisisthatthepremiseforpureheatconductionisnolongervalid,becausetheot...........
【中国标准分类号】:Q25
【国际标准分类号】:27_220
【页数】:19P.;A4
【正文语种】:英语
【英文标准名称】:Non-destructivetesting-Leaktesting-Criteriaformethodandtechniqueselection.
【原文标准名称】:无损检验.泄漏检验.方法和技术选择的标准
【标准号】:NFA09-105/A1-2004
【标准状态】:现行
【国别】:法国
【发布日期】:2004-07-01
【实施或试行日期】:2004-07-30
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;无损检验;泄漏;泄漏量;准则;漏泄试验;材料试验;方法;检验;密封性;选择支持;标准目录;选择
【英文主题词】:Catalogueofcriteria;Criterion;Inspection;Leaktests;Leakage;Leaks;Materialstesting;Methods;Non-destructivetesting;Selection;Selectionsupport;Testing;Tightness
【摘要】:
【中国标准分类号】:H26
【国际标准分类号】:19_100
【页数】:6P;A4
【正文语种】:其他
