【英文标准名称】:Founding-Magneticparticletesting
【原文标准名称】:铸造.磁粒探伤试验
【标准号】:NFA04-193-2012
【标准状态】:现行
【国别】:法国
【发布日期】:2012-12-01
【实施或试行日期】:2012-12-07
【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】:铸钢;铸造工艺;铸件;铸铁;铁磁的;铸造(学);铸造学;铸造生产;铁;磁粒;磁粒探伤;材料;测量技术;无损检验;钢;表面缺陷;表面不连续性;表面检验;试验
【英文主题词】:Caststeels;Casting(process);Castings;Cast-iron;Ferromagnetic;Foundries;Foundryengineering;Foundrypractice;Iron;Magneticparticles;Magnetic-particleflawdetection;Materials;Measuringtechniques;Non-destructivetesting;Steels;Surfacedefects;Surfacediscontinuities;Surfaceinspections;Testing
【摘要】:
【中国标准分类号】:
【国际标准分类号】:19_100;77_180
【页数】:25P;A4
【正文语种】:其他


【英文标准名称】:StandardGuideforMeasurementofRemainingPrimaryAntioxidantContentInIn-ServiceIndustrialLubricatingOilsbyLinearSweepVoltammetry
【原文标准名称】:用线性扫描伏安法测量使用中工业润滑油残留原始抗氧化剂含量的标准指南
【标准号】:ASTMD7590-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:D02.09.0C
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:苯基萘胺α;烷基化物二苯胺;透平油;线性扫描伏安法(LSV);阻碍石碳酸抗氧化剂;芳族胺抗氧化剂;锌二烃基二硫代磷酸盐
【英文主题词】:2,6-di-tert-butylphenol;2,6-di-tert-butyl-4methylphenol;phenylalphanaphthylamine;alkylateddiphenylamine;turbineoil;linearsweepvoltammetry(LSV);hinderedphenolantioxidant;aromaticamine
【摘要】:Thequantitativedeterminationofremainingantioxidantsforin-serviceindustrialoilsbymeasuringtheamountoftheseadditivesthathavebeenaddedtotheoilasprotectionagainstoxidation.Industriallubricants,suchasturbineoils,compressoroils,gearoils,hydraulicoils,bearinglubricantsandgreasescanbeformulatedwithawidevarietyofantioxidantstypessuchasphenolsandamines(asprimaryantioxidants),whichareworkingsynergisticallyandthereforeallimportanttobemonitoredindividually.Forin-serviceoils,theLSVdeterminesandcomparestheamountoforiginalprimaryantioxidantsremainingafteroxidationhavereduceditsinitialconcentration.Thisguidecoversproceduresforprimaryantioxidantssuchasaminesandphenols,asdescribedbyTestMethodD6971andD6810.LSVisnotdesignedorintendedtodetectalloftheantioxidantintermediatesformedduringthethermalandoxidativestressingoftheoils,whicharerecognizedashavingsomecontributiontotheremainingusefullifeoftheusedorin-serviceoil.Inordertomeasuretheoverallstabilityofanoil(includingcontributionofintermediatespresent),andbeforemakingfinaljudgmentontheremainingusefullifeoftheusedoil(whichmightresultinthereplacementoftheoilreservoir),itisadvisedtoperformadditionalanalyticaltechniques(inaccordancewithPracticeD4378andPracticeD6224).Thisguideisapplicabletoawiderangeofindustrialoils,bothmineralorsyntheticbased,whichcancontainrustandoxidationinhibitors,antiwearadditivessuchaszincdialkyldithiophosphatesongearoils,circulatingoils,transmissionoilsandotherindustriallubricatingoils.Thetestisalsosuitableformanufacturingcontrolandspecificationacceptance.Whenavoltammetricanalysisisobtainedforaindustriallubricantinhibitedwithatleastonetypeofantioxidant,thereisanincreaseinthecurrentoftheproducedvoltammogrambetween5to8s(or0.5to0.8Vappliedvoltage)(seeNote1)forthezincdialkyldithiophosphatetypeofantioxidant(Fig.1),anincreaseinthecurrentoftheproducedvoltammogrambetween8to12s(or0.8to1.2Vappliedvoltage)(Fig.2)(seeNote1)forthearomaticamines,andincreaseinthecurrentoftheproducedvoltammogrambetween13and16s(or1.3to1.6Vappliedvoltage)(seeNote1)forthehinderedphenolsorcarbamatesintheneutralacetonesolution(Fig.2:x-axis1s=0.1V),orboth.Hinderedphenolantioxidantsdetectedbyvoltammetricanalysisinclude,butarenotlimitedto,2,6-di-tert-butyl-4-methylphenol;2,6-di-tert-butylphenoland4,4x2019;-Methylenebis(2,6-di-tert-butylphenol).Aromaticamineantioxidantsdetectedbyvoltammetricanalysisinclude,butarenotlimitedto,phenylalphanaphthylamines,andalkylateddiphenylamines.Note18212;Voltageslistedwithrespecttoreferenceelectrode.ThevoltammogramsshowninFigs.1-6wereobtainedwithaplatinumreferenceelectrodeandavoltagescanrateof0.1V/s.Forindustriallubricantscontainingzincdialkyldithiophosphatetypeofantioxidants,thereisanincreaseinthecurrentoftheproducedvoltammogrambetween5to8s(or0.5to0.8Vappliedvoltage)(seeNote1)byusingtheneutralacetonetestsolution(seeFig.1).ThereisnocorrespondingASTMInternationalstandarddescribingthetestmethodpr........
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:14P.;A4
【正文语种】: