ASTM A 719-1990 多片样品表面绝缘电阻率的测试方法
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来源:标准资料网
【英文标准名称】:TestMethodforLaminationFactorofMagneticMaterials
【原文标准名称】:多片样品表面绝缘电阻率的测试方法
【标准号】:ASTMA719-1990
【标准状态】:作废
【国别】:美国
【发布日期】:1990
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:覆层厚度;磁芯;材料;试验;叠层铁芯;材料的磁特性;特性
【英文主题词】:testing;properties;magneticpropertiesofmaterials;coatingthickness;materials;magneticcores;laminatedcores
【摘要】:
【中国标准分类号】:H53
【国际标准分类号】:29_040_10
【页数】:2P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforCollectionofOn-LineCompositeSamplesofSuspendedSolidsandIonicSolidsinProcessWater
【原文标准名称】:在生产用水中悬浮固体和离子固体线上复合样品采集的标准实施规程
【标准号】:ASTMD6301-2008
【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】:D19.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:corrosionproducts;corrosionproductsampler;filtration;integratedsample;ionexchangemembranes;Corrosivity--water;Filtration;Integratedsample;Ionexchangematerials/applications;Nonfilterablematter;Samplingwateranalysisapplications;Water
【摘要】:Thetransportofanysuspendedsolidsorcorrosionproductsfromthepreboilercyclehasbeenshowntobedetrimentaltoalltypesofsteamgeneratingequipment.Corrosionproducttransportaslowas10ppbcanhavesignificantimpactonsteamgeneratorsperformance.DepositedcorrosionproductsonPWRsteamgeneratortubescanreduceheattransfer,and,ifthedepositissufficientlythick,canprovidealocalareaforimpuritiesinthebulkwatertoconcentrate,resultinginacorrosiveenvironment.InBWRplants,thetransportofcorrosionproductscancausefuelfailure,outofcoreradiationproblemsfromactivationreactions,andothermaterialrelatedproblems.Infossilplants,thetransportofcorrosionproductscanreduceheattransferintheboilersleadingtotubefailuresfromoverheating.Theremovalofthesecorrosionproductsbychemicalcleaningisexpensiveandpotentiallyharmfultotheboilertubes.Normally,grabsamplesarenotsensitiveenoughtodetectchangesinthelevelofcorrosionproducttransport.Also,systemtransientsmaybemissedbyonlytakinggrabsamples.Anintegratedsampleovertimewillincreasethesensitivityfordetectingthecorrosionproductsandprovideabetterunderstandingofthetotalcorrosionproducttransporttosteamgenerators.1.1Thispracticeisapplicableforsamplingcondensedsteamorwater,suchasboilerfeedwater,forthecollectionofsuspendedsolidsand(optional)ionicsolidsusinga0.45-x03BC;mmembranefilter(suspendedsolids)andionexchangemedia(ionicsolids).Asthemajorsuspendedcomponentfoundinmostboilerfeedwatersissomeformofcorrosionproductfromthepreboilersystem,thedeviceusedforthispracticeiscommonlycalledacorrosionproductsampler.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z12
【国际标准分类号】:13_060_45
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:TestMethodforSamplingandTestingforAshandTotalIroninSteelMillDispersionsofRollingOils
【原文标准名称】:轨钢厂轧制油悬浮液中灰分及总铁量的取样及测试的试验方法
【标准号】:ASTMD4042-1993(2003)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】:D02.L0
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:轧钢机;润滑剂;抽样方法;工艺;石油产品;试验;分散;灰分;铁
【英文主题词】:ash;iron;rollingoil;steelmill
【摘要】:Thelifecycleandcleanlinessofarecirculatingsteelmillrollingoildispersionisaffectedbytheamountofironpresent.Thisironconsistsmainlyofironfromacidpicklingresiduesandironfromattritionofthesteelsheetorrollsduringcoldrolling.Insamplingrollingoilsfortotalironitisdifficulttopreventadherenceofironcontainingsludgetothesamplecontainer.Thus,theaccuracyofatotalirondeterminationfromanaliquotsampleissuspect.Thispracticeprovidesameansforensuringthatallironcontainedinasampleisincludedintheanalysis.Althoughlesssignificant,theashcontentisstillanessentialpartoftheprocedureforobtainingatotalironanalysis.Generally,theashwillbemostlyiron,andinmanycases,couldbeusedasasubstitutefortotalironindeterminingwhentochangethedispersion.FIG.1PossibleHoldingFixtureandAssemblySystem1.1Thistestmethoddescribesaprocedureforsamplingandtestingdispersionsofrollingoilsinwaterfromoperatingsteelrollingmillsfordeterminationofashandtotalironcontent.Itspurposeistoprovideatestmethodsuchthatarepresentativesamplemaybetakenandphenomenonsuchasironseparation,fat-emulsionseparation,andsoforth,donotcontributetoanalyticalerrorindeterminationofashandtotaliron.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,seeSections6and7.
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:4P.;A4
【正文语种】:
