BS EN 754-3-1996 铝和铝合金.冷拉短棒材/棒材和管材.圆棒材的尺寸和形位公差
作者:标准资料网 时间:2024-05-10 00:09:04 浏览:9094
来源:标准资料网
【英文标准名称】:Aluminiumandaluminiumalloys-Colddrawnrod/barandtube-Roundbars,tolerancesondimensionsandform
【原文标准名称】:铝和铝合金.冷拉短棒材/棒材和管材.圆棒材的尺寸和形位公差
【标准号】:BSEN754-3-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-06-15
【实施或试行日期】:1996-06-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸公差;铝;直径;管;拉制;形状公差;尺寸;铝合金;棒材;冷加工;圆形
【英文主题词】:Aluminium;Aluminiumalloys;Aluminiumpipes;Aluminiumtubes;Cold-drawn;Dimensionaltolerances;Dimensions;Drawn;Formtolerances;Limitdeviations;Pipes;Poles;Roundrods;Tolerances(measurement)
【摘要】:ThisPartofEN754specifiesthetolerancesondimensionsandformforaluminiumandaluminiumalloycolddrawnroundbarshavingdiametersintherangefrom3mmuptoandincluding100mm.
【中国标准分类号】:H61
【国际标准分类号】:77_150_10
【页数】:10P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforPillingResistanceandOtherRelatedSurfaceChangesofTextileFabrics:RandomTumblePillingTester
【原文标准名称】:纺织纤维的抗起球性和其他相关表面变化的标准试验方法:翻滚式起球试验仪
【标准号】:ASTMD3512/D3512M-2010e1
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D13.60
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fabric;fuzz;pills;Pillingresistance;Randomtumblepillingtester;Surfaceanalysis--textilefabrics/fibers;Textilefabrics(general)
【摘要】:AcceptanceTesting8212;Thismethodoftestingfabricsforresistancetopillingisnotrecommendedforacceptancetesting.Ifitisusedforacceptancetesting,itshouldbeusedwithcautionbecausethebetween-laboratoryprecisionispoor.Insomecasesthepurchaserandthesuppliermayhavetotestacommercialshipmentofoneormorespecificmaterialsbythebestavailabletestmethod,eventhoughthetestmethodisnotrecommendedforacceptancetesting.Iftherearedifferencesorpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestsshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,thetestsamplesshouldbeusedthatareashomogeneousaspossible,drawnfromthematerialfromwhichthedisparatetestresultswereobtained,andrandomlyassignedinequalnumberstoeachlaboratoryfortesting.Othermaterialswithestablishedtestvaluesmaybeusedforthispurpose.Thetestresultsfromthetwolaboratoriesshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsmustbeadjustedinconsiderationoftheknownbias.Thepillingoftextilefabricsisaverycomplexpropertybecauseitisaffectedbymanyfactorswhichmayincludetypeoffiberorblends,fiberdimensions,yarnandfabricconstruction,fabricfinishingtreatmentsandrefurbishingmethod.Testingbeforerefurbishingmaybeadviseable.Thepillingresistanceofaspecificfabricinactualwearvariesmorewithgeneralconditionsofuseandindividualwearersthaninreplicatefabricspecimenssubjectedtocontrolledlaboratorytests.Thisexperienceshouldbeborneinmindwhenadoptinglevelsofacceptabilityforanyseriesofstandards.Pillsvaryappreciablyinsizeandappearanceanddependonthepresenceoflintanddegreeofcolorcontrast.Thesefactorsarenotevaluatedwhenpillingisratedsolelyonthenumberofpills.Thedevelopmentofpillsmaybeaccompaniedbyothersurfacephenomenasuchaslossofcover,colorchange,orthedevelopmentoffuzz.Sincetheoverallacceptabilityofaspecificfabricisdependentonboththecharacteristicsofthepillsandtheotherfactorsaffectingsurfaceappearance,itissuggestedthatfabricstestedinthelaboratorybeevaluatedsubjectivelywithregardtotheiracceptabilityandnotratedsolelyonthenumberofpillsdeveloped.Aseriesofstandards,basedongraduateddegreesofsurfacechangeofthefabrictypebeingtested,maybesetuptoprovideabasisforsubjectiveratings.Thevisualstandardsaremostadvantageouswhenthelaboratorytestspecimenscorrelatecloselyinappearancewithwornfabricsandshowasimilarratioofpillstofuzz.Countingthepillsandweighingtheirnumberwithrespecttotheirsizeandcontrast,asacombinedmeasureofpillingresistance,isnotrecommendedbecauseoftheexcessivetimerequiredforcounting,sizing,andcalculating.Thedegreeoffabricpillingisevaluatedbycomparingthetestedspecimenswithvisualstandards,whichmaybeactualfabricsorphotographsoffabrics,showingarangeofpillingresistance.Theobservedresistancetopillingisreportedonanarbitraryscalerangingfrom5(nopilling)to1(veryseverepilling).Thistestmethodisapplicabletoawidevarietyofwovenandknittedfabricsthatvaryinpillingpropensityasaresultofvariationsinfiber,yarnandfabricstructure,andfinish.1.1Thistestmethodcoverstheresistancetotheformationofpillsandotherrelatedsurfacechangesontextilefabricsusingtherandomtumblepillingtester.Theprocedureisgenerallyapplicable......
【中国标准分类号】:W55
【国际标准分类号】:59_080_30
【页数】:6P.;A4
【正文语种】:英语
【英文标准名称】:Buildingconstruction.Sealantsforjoints.Determinationofchangeinmassandvolume.
【原文标准名称】:房屋建筑.接点密封.体积和重量变化的测定
【标准号】:NFP85-502-1998
【标准状态】:作废
【国别】:法国
【发布日期】:1998-03-01
【实施或试行日期】:1998-03-05
【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】:
【英文主题词】:Buildingsealants;Buildings;Construction;Constructionjoints;Determination;Jointsealants;Joints;Mass;Sealing;Sealingmaterials;Volume
【摘要】:
【中国标准分类号】:P32
【国际标准分类号】:91_100_50
【页数】:7P;A4
【正文语种】:其他
