DIN 24950 T.2-1978 液压技术.软管管道.尺寸.字母
作者:标准资料网 时间:2024-05-19 04:59:11 浏览:8561
来源:标准资料网
【英文标准名称】:Oilhydraulicandpneumatic;hoseassemblies,dimensionallettering
【原文标准名称】:液压技术.软管管道.尺寸.字母
【标准号】:DIN24950T.2-1978
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:Aerospaceseries;bearings,airframerolling-Singlerowself-aligningrollerbearingsinsteel-Diameterseries3and4;dimensionsandloads;GermanversionEN3290:1994
【原文标准名称】:航空航天系列.机体用轴承.钢制单列自定心滚柱轴承.直径系列3和直径系列4.尺寸和负载;德文版本EN3290:1994
【标准号】:EN3290-1994
【标准状态】:现行
【国别】:
【发布日期】:1994-11
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:航天运输;静荷载;尺寸;规范(批准);圆筒滚柱轴承;内间隙;飞机机架;负荷;符号;单列轴承;轴承;材料;飞机机架轴承;钢;特性;航空运输;扭矩;间隙;安全工作荷载;航空航天运输
【英文主题词】:Aerospacetransport;Airtransport;Airframebearings;Airframes;Barrel-rollerbearings;Bearings;Clearances;Dimensions;Internalclearances;Loading;Materials;Properties;Safeworkingload;Single-rowbearings;Spacetransport;Specification(approval);Staticloading;Steels;Symbols;Torque
【摘要】:
【中国标准分类号】:V22
【国际标准分类号】:49_035
【页数】:10P.;A4
【正文语种】:英语
【英文标准名称】:TestMethodforDensityDeterminationforPowderMetallurgy(P/M)MaterialsContainingLessThanTwoPercentPorosity
【原文标准名称】:含低于2%孔隙率的粉末冶金材料密度测定的试验方法
【标准号】:ASTMB311-1993(2002)e1
【标准状态】:现行
【国别】:
【发布日期】:1993
【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】:B09.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;碳化物;密度;烧结金属
【英文主题词】:cementedcarbides;density;hardmetals;metalinjectionmolded(MIM)parts;powdermetallurgy(P/M);powderforged(P/F)parts;powdermetallurgy
【摘要】:ForP/Mmaterialscontaininglessthantwopercentporosity,adensitymeasurementmaybeusedtodetermineiftheparthasbeendensified,eitheroverallorinacriticalregion,tothedegreerequiredfortheintendedapplication.Densityalonecannotbeusedforevaluatingthedegreeofdensificationbecausechemicalcompositionandheattreatmentaffectthepore-freedensity.Forcementedcarbides,adensitymeasurementisnormallyusedtodetermineifthereisanysignificantdeviationincompositionofthecarbidegrade.Forstraighttungstencarbide-cobaltgrades,therelationshipisstraightforward.Forcomplexcarbidegrades(forexample,gradescontainingtantalumcarbideortitaniumcarbide,orboth,inadditiontotungstencarbide-cobalt),thesituationismorecomplicated.Ifthemeasureddensityisbeyondthespecifiedlimits,thecompositionisoutsideofthespecifiedlimits.Ameasureddensitywithinthespecifiedlimitsdoesnotensurecorrectcomposition;compensationbetweentwoormoreconstituentscouldresultintheexpecteddensitywiththewrongcomposition.Densityalonecannotbeusedforevaluatingacementedcarbidegrade.1.1Thistestmethodcoversthedeterminationofdensityforpowdermetallurgy(P/M)materialscontaininglessthantwopercentporosityandforcementedcarbides.Thistestmethodisbasedonthewaterdisplacementmethod.Note18212;Atestspecimenthatgainsmasswhenimmersedinwaterindicatesthespecimencontainssurface-connectedporosity.Unsealedsurfaceporositywillabsorbwaterandcausedensityvalueshigherthanthetruevalue.Thistestmethodisnotapplicableifthisproblemoccurs.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H70
【国际标准分类号】:77_160
【页数】:4P.;A4
【正文语种】:
