【英文标准名称】:Wide-mouthglasscontainers;deviationfromflatnessoftopsealingsurface;testmethods
【原文标准名称】:广口玻璃容器封合面顶部平面度偏差试验方法
【标准号】:ISO9885-1991
【标准状态】:现行
【国别】:国际
【发布日期】:1991-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC63
【标准类型】:()
【标准水平】:()
【中文主题词】:容器;试验;尺寸;玻璃;包装件;平整度;保藏瓮;平面度测量;形状公差;尺寸测量;玻璃容器
【英文主题词】:Containers;Definitions;Dimensionaldeviations;Dimensionalmeasurement;Dimensions;Flatnessmeasurement;Flatness(surface);Formtolerances;Glass;Glasscontainers;Glassproducts;Materialstesting;Openings;Orifices;Packages;Preservingjars;Qualitytesting;Receptacles;Surfaceevenness;Testing
【摘要】:Specifiestwocomplementarymethodsforthedeterminationofthedeviationfromflatness.Describestheprinciple,theapparatus,thesampling,thetestprocedure,theexpressionofresults,andthecontentsofthetestreport.
【中国标准分类号】:A82
【国际标准分类号】:55_100
【页数】:2P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 粉末冶金材料与制品化学分析方法—铁基材料与制品中铜的测定（氟化氢铵掩蔽—碘量法） |
| 中标分类： |
冶金 >>
粉末冶金 >>
粉末冶金材料与制品 |
| 替代情况： | 被JB/T 8063.2-2011代替 |
| 发布部门： | 中华人民共和国机械工业部 |
| 发布日期： | 1996-09-03 |
| 实施日期： | 1997-07-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 2012-04-01 |
| 提出单位： | 机械工业部北京市粉末冶金研究所 |
| 归口单位： | 机械工业部北京市粉末冶金研究所 |
| 起草单位： | 北京市粉末冶金研究所 |
| 起草人： | 陈涤 |
| 出版社： | 机械工业出版社 |
| 出版日期： | 1997-05-01 |
| 页数： | 5页 |
| 批文号： | 机械科[1996]684号 |
适用范围
本标准规定了氟化氢铵掩蔽—碘量法测定铜含量。本标准适用于铁基粉末冶金材料与制品中铜的测定，测定范围：1%以上。
前言
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目录
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引用标准
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所属分类： 冶金 粉末冶金 粉末冶金材料与制品
【英文标准名称】:StandardTestMethodforTwistinYarnsbyDirect-Counting
【原文标准名称】:直接计数法测定纱线捻数的标准试验方法
【标准号】:ASTMD1423-2002(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:D13.58
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:twist;twistfactor;twistmultiplier;twisttake-up;yarn;Direct-countingtechnique;Twist--textiles
【摘要】:TestMethodD1423fortestingtwistinyarnsbydirect-countingisconsideredsatisfactoryforacceptancetestingofcommercialshipmentsbecausecurrentestimatesofbetween-laboratoryprecisionareacceptableandthemethodhasbeenusedextensivelyinthetradeforacceptancetesting.Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestsshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimumusethesamplesforsuchcomparativetestsashomogeneousaspossible,drawnfromthesamelotofmaterialthatresultedinthedisparatetestresultsandrandomlyinequalnumberstoeachlaboratory.Thetestresultsfromthelaboratoriesinvolvedshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Thedeterminationoftwistinastraightsectionofayarnisnotthesimplestraightforwardoperationitappearstobe,forthetestresultsmaybegreatlyinfluencedbyvariationsintestproceduresandtechniques.Inallmanipulations,extremecareisnecessarytopreventspecimenrotationalteringthetwistlevelbeforetestingbegins.Thetwistinayarnbeforeitispackagedmaybedifferentfromthatoftheyarnafterithasbeenwithdrawnfromthepackagebecauseofchangesintensionandtheeffectofthemethodofwithdrawal.Iftheyarniswithdrawnover-end,aslightincreaseordecreaseintwistwilltakeplace,dependinguponthedirectionofthetwistintheyarn,thedirectionofwindingonthepackage,andthelengthofthewraponthepackage.Whenayarnisincorporatedintoorremovedfromamorecomplexstructure,alterationsmayoccurasaresultoftheplying,untwisting,orravelingoperation.Forexample,whendeterminingthetwistinpliedyarnbytheprocedurefordeterminingoriginaltwist,asthepliedyarnisuntwisted,acomparableamountoftwistisreinsertedin,orremovedfrom,thesingle-yarncomponents.Asaconsequence,thesingleyarnshaveapproximatelytheoriginaltwistpriortotheplyingoperationbutnotthetwisttheyhavewhentheyarefunctioningascomponentsofthepliedyarn.Thelatterorfinaltwistmaybeestimatedbyaddingtheplytwistto(orsubtractingitfrom)thesingle-yarntwistdependingonthedirectionsoftheplyandsinglestwist.Foramoreprecisedetermination,thetestproceduremustbemodified.Therearethustwodifferentproceduresforpreparingspecimensofthecomponentelementsofapliedorcabledyarnfortwistdetermination.Theprocedurefortheoriginaltwistmeasuresthetwistinacomponentofacomplexstrandafterthecomponentshavebeenuntwisted.Theprocedureforfinaltwistmeasuresthetwistinacomponentasitliesinthecomplexstrand.Althoughtheoriginaltwistprocedureismostoftenused,selectionofaparticularprocedurewilldependonthetypeofinformationneeded.Note38212;Thedifferenceintwistbetweenunwindingfromthesideandover-endis1/x03C0;d,wheredisthediameterofthepackage.Thus,fora25-mm(1-in.)diameterpackage,thedifferencewouldbeabout13tpmorabout1/3tpi.Whenayarnistakenfromamorecomplexyarnstructureorfromafabric,theresultanttwistshouldbeconsideredonlyanapproximationoftheoriginalvaluebecauseofalterationsthatmayhaveoccurredasaresultoftheeffectsofunwinding,handling,andmechanicalstrainsmetinprocessing.Theoptimumamountoftwistdependsupon........
【中国标准分类号】:W58
【国际标准分类号】:59_080_20
【页数】:7P.;A4
【正文语种】:英语