NF A95-401-1977 粉末冶金.烧结的硬金属.烧结.取样和试验
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【英文标准名称】:POWDERMETALLURGY.SINTEREDHARDMETALS.SAMPLINGANDTESTING.
【原文标准名称】:粉末冶金.烧结的硬金属.烧结.取样和试验
【标准号】:NFA95-401-1977
【标准状态】:作废
【国别】:法国
【发布日期】:1977-12
【实施或试行日期】:1977-11-22
【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】:粉末冶金;烧结产品;硬质合金;试验;取样;抽样方法
【英文主题词】:powdermetallurgy;sinteredproducts;hardmetals;hardmetals;samplingmethods;tests;testing;sampling
【摘要】:
【中国标准分类号】:H72
【国际标准分类号】:
【页数】:3P;A4
【正文语种】:其他
MIL-STD-665D, MILITARY STANDARD: LAUNDERING OF CLOTHING AND EQUIPAGE (10 MAR 1987] [NO S/S DOCUMENT]., This standard establishes the criteria and procedures which shall govern the laundering of clothing and equipage by contract service.【英文标准名称】:Petroleumproducts-Calculationofcetaneindexofmiddle-distillatefuelsbyfour-variableequation(ISO4264:2007)EnglishversionofDINENISO4264:2007-11
【原文标准名称】:石油产品.用四变量方程计算中间馏份燃料的十六烷指数
【标准号】:DINENISO4264-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:机动车燃料;十六烷值;测定;馏出物;燃料;索引;液体燃料;材料测试;数学计算;参数;石油产品;数量调查
【英文主题词】:Automotivefuels;Cetanenumber;Determination;Distillates;Fuels;Indexes;Liquidfuels;Materialstesting;Mathematicalcalculations;Parameters;Petroleumproducts;Quantitysurveying
【摘要】:TheinternationalStandarddescribesaprocedureforthecalculationofthecetaneindexofmiddle-distillatefuelsfrompetroleum-derivedsources.Thecalculatedcalueistermedthe"cetaneindexbyfour-cariableequation"ThroughouttheremainingtextofthisinternationalStandard,theterm"cetaneindex"impliescetaneindexbyfour-variableequation.ThisinternationalStandardisnotapplicabletofuelscontainingadditivesforraisingthecetanenumber,nortopurehydrocarbons,nortodistillatefuelsderivedfromcoal.Itisapplicabletofuelscontainingnon-petroleumderivativesfromtarsandandoilshale.NOTE1ThisinternationalStandardwasoriginallydevelopedusingamatrixoffuels,someofwhichcontainnonpetrolemuderivatesformtarsandsandoilshale.Othercetaneindexequationshavesincebeendevelopedwhichcanbemoreapplicabletotarsandsproducts.NOTE2Thecetaneendexisnotanalternativewaytoexpressthecetanenumber;itisasupplementarytool,tobeusedwithdueregardforitslimitations.NOTE3Thecetaneindexisusedtoestimatethecetanenumberofdieselfuelwhenatestengineisnotavailabletodeterminethispropertydirectly,orwheninsufficientsampleisavailableforanenginerating.Incaseswherethecetanenumberofafuelhasbeenprebiouslyestablished,thecetaneindexcanbeusedtoverifythecentanenumberofsubsequentsamplesofthatfuel,probidedthefuel'sourceandmodeofmanufactureremainunchanged.ThececommendedrangeoffuelpropertiesforapplicationofthisinternationalStandardisasfollow:FuelpropertyRecommendedrangeCetanenumber32,5-56,5Densityat15°C,kg/m3805,0-895,010%(V/V)distillationrecoverytemperature,°C171-25950%(V/V)distillationrecoverytemperature,°C212-30890%(V/V)distillationrecoverytemperature,°C251-363Withintherecommendedrangeofcetanenumber(32,5to56,5),theexpectederrorofthepredictionviathecetaneindexequationwillbelessthan±2cetanenumbersfor65%ofthedistillatefuelsexamined.Errorsmaybegreaterforfuelswhosepropertiesfalloutsidetherecommendedrangeofapplication.
【中国标准分类号】:E30
【国际标准分类号】:75_160_20
【页数】:12P.;A4
【正文语种】:德语
