DIN 46400-1 Bb.1-1990 具有特殊磁性能的扁钢制品.电工钢片和钢带.冷轧材.非定向.最终退火.频率100Hz以上交变磁化损耗
时间:2024-05-09 09:57:15 来源: 标准资料网 作者：标准资料网 阅读：8278
【英文标准名称】:Steelflatswithspecialmagneticproperties;coldrolled,nonoriented,finallyannealedmagneticsheetandstrip;hysteresislossatfrequenciesabove100Hz
【原文标准名称】:具有特殊磁性能的扁钢制品.电工钢片和钢带.冷轧材.非定向.最终退火.频率100Hz以上交变磁化损耗
【标准号】:DIN46400-1Bb.1-1990
【标准状态】:作废
【国别】:德国
【发布日期】:1990-06
【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】:钢;薄板材;电工钢片;电工钢带;磁性材料;频率;电气工程;材料;半成品;磁化;窄条带材
【英文主题词】:materials;tape;steels;frequencies;magneticmaterials;magnetization;sheetmaterials;electricalstrips;electricalengineering;electricalsheets;semi-finishedproducts
【摘要】:
【中国标准分类号】:H53
【国际标准分类号】:77_140_50;29_040_10
【页数】:2P;A4
【正文语种】:德语
【英文标准名称】:QualityProgramGuidelinesforProjectPhaseofNon-NuclearPowerGenerationFacilities
【原文标准名称】:非核发电设备方案阶段的质量保证计划指南
【标准号】:ANSI/ASQCE1-1989
【标准状态】:作废
【国别】:美国
【发布日期】:1989
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:设计;设计评论;质量控制
【英文主题词】:Design;Designreview;Electricpowerstations;Quality;Qualitycontrol
【摘要】:
【中国标准分类号】:F21
【国际标准分类号】:03_120_10;27_100
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforAcidNumberofPetroleumProductsbyPotentiometricTitration
【原文标准名称】:用电位滴定法测定石油产品酸值的标准试验方法
【标准号】:ASTMD664-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D02.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:酸值;润滑剂;石油产品;电势分析法;电位测量法;测试
【英文主题词】:acidnumber;lubricants;petroleumproducts;potentiometric;strongacidnumber;titration
【摘要】:Newandusedpetroleumproductsmaycontainacidicconstituentsthatarepresentasadditivesorasdegradationproductsformedduringservice,suchasoxidationproducts.Therelativeamountofthesematerialscanbedeterminedbytitratingwithbases.Theacidnumberisameasureofthisamountofacidicsubstanceintheoil,alwaysundertheconditionsofthetest.Theacidnumberisusedasaguideinthequalitycontroloflubricatingoilformulations.Itisalsosometimesusedasameasureoflubricantdegradationinservice.Anycondemninglimitsmustbeempiricallyestablished.Sinceavarietyofoxidationproductscontributetotheacidnumberandtheorganicacidsvarywidelyincorrosionproperties,thetestmethodcannotbeusedtopredictcorrosivenessofoilunderserviceconditions.Nogeneralcorrelationisknownbetweenacidnumberandthecorrosivetendencyofoilstowardmetals.1.1Thistestmethodcoversproceduresforthedeterminationofacidicconstituentsinpetroleumproductsandlubricantssolubleornearlysolubleinmixturesoftolueneandpropan-2-ol.Itisapplicableforthedeterminationofacidswhosedissociationconstantsinwaterarelargerthan10-9;extremelyweakacidswhosedissociationconstantsaresmallerthan10-9donotinterfere.Saltsreactiftheirhydrolysisconstantsarelargerthan10-9.Therangeofacidnumbersincludedintheprecisionstatementis0.1mg/gKOHto150mg/gKOH.Note1Innewandusedoils,theconstituentsthatmaybeconsideredtohaveacidiccharacteristicsincludeorganicandinorganicacids,esters,phenoliccompounds,lactones,resins,saltsofheavymetals,saltsofammoniaandotherweakbases,acidsaltsofpolybasicacids,andadditionagentssuchasinhibitorsanddetergents.1.2Thetestmethodmaybeusedtoindicaterelativechangesthatoccurinoilduringuseunderoxidizingconditionsregardlessofthecolororotherpropertiesoftheresultingoil.Althoughthetitrationismadeunderdefiniteequilibriumconditions,thetestmethodisnotintendedtomeasureanabsoluteacidicpropertythatcanbeusedtopredictperformanceofoilunderserviceconditions.Nogeneralrelationshipbetweenbearingcorrosionandacidnumberisknown.Note2TheacidnumberobtainedbythisstandardmayormaynotbenumericallythesameasthatobtainedinaccordancewithTestMethodsD974andD3339.Therehasnotbeenanyattempttocorrelatethismethodwithothernon-titrationmethods.Note3AfewlaboratorieshavemadetheobservationthatthereisadifferenceinTestMethodD664resultswhenaqueousversusnonaqueousbuffersareused.1.3hevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E30
【国际标准分类号】:75_080;75_080;75_080;75_080;75_080
【页数】:8P.;A4
【正文语种】: