BS 7371-1-2009 金属紧固件的镀层.第1部分:一般要求和选择导则用规范
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来源:标准资料网
【英文标准名称】:Coatingsonmetalfasteners–Part1:Specificationforgeneralrequirementsandselectionguidelines
【原文标准名称】:金属紧固件的镀层.第1部分:一般要求和选择导则用规范
【标准号】:BS7371-1-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-08-31
【实施或试行日期】:2009-08-31
【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】:附件;面积;分类系统;清洁处理;涂层;名称与符号;脆裂;紧固件;氢;金属涂层;金属;防护涂层;选择
【英文主题词】:Accessories;Area;Classificationsystems;Cleaning;Coatings;Designations;Embrittlement;Fasteners;Hydrogen;Metalcoatings;Metals;Protectivecoatings;Selection
【摘要】:ThisPartofBS7371specifiesgeneralrequirementsthatapplytocoatingscoveredbyallotherPartsofBS7371,including:a)preparationsbeforecoating;b)hydrogenembrittlementavoidance;c)samplingforinspection;d)thicknesstesting;e)areatablesformetricparallelthreadedfasteners(areatablesforimperialfastenerscanbefoundinBS7371-12);andf)selectionofcoatings(includingtheopportunitytoselectnon?hexavalentchromium-containingcoatings).SpecificrequirementsaregivenineachPartofBS7371.
【中国标准分类号】:J13
【国际标准分类号】:21_060_01;25_220_01
【页数】:24P.;A4
【正文语种】:英语
【英文标准名称】:ISOacrossflatsforfastenerswithspannerdrive.
【原文标准名称】:用扳手操作的紧固件的ISO对边.
【标准号】:NFL22-062-1965
【标准状态】:现行
【国别】:法国
【发布日期】:1965-12-01
【实施或试行日期】:1966-12-30
【发布单位】:(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:V20
【国际标准分类号】:49_030_30;49_030_20
【页数】:1P.;A4
【正文语种】:其他
【英文标准名称】:StandardPracticeforDeterminingDegradationEndPointinDegradablePolyethyleneandPolypropyleneUsingaTensileTest
【原文标准名称】:用拉伸试验对聚乙烯和聚丙烯老化过程的最终老化点的测定的标准实施规程
【标准号】:ASTMD3826-1998(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:D20.96
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:brittlepoint;degradableplastics;plastics;polyethylene/polypropylenefilms/sheeting;tensileelongation;Brittlepoint;Degradableplastics;Degradation--plastics;Polyethylene(PE)sheetandfilm;Polypropylene(PP);Tensileproperties/testing--p
【摘要】:Thetensileelongationpropertydeterminedbythispracticeisofvalueforthecharacterizationofdegradablematerials.Thetensileelongationpropertymayvarywithspecimenthickness,methodofpreparation,speedoftesting,typeofgripsused,andmannerofmeasuringtestextension.Consequently,whereprecisecomparativeresultsaredesired,thesefactorsmustbecarefullycontrolled.Thetensileelongationpropertymaybeutilizedtoprovidedataforresearchanddevelopmentandengineeringdesignaswellasqualitycontrolspecifications.However,datafromsuchtestscannotbeconsideredsignificantforapplicationsdifferingwidelyfromtheload-timescaleofthetestemployed.Materialsthatfailbytearinggiveanomalousdatathatcannotbecomparedwiththosefromnormalfailure.Beforeproceedingwiththistestmethod,referenceshouldbemadetothespecificationsofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparametersoracombinationthereof,coveredinthematerialspecificationsshalltakeprecedenceoverthosementionedinthistestmethod.Iftherearenomaterialspecifications,thenthedefaultconditionsapply.1.1Thispracticecoversthedeterminationofadegradation-endpoint(abrittlepoint)fordegradablepolyethylene/polypropylenefilmsandsheetinglessthan1.0mm(0.04in.)thick.Thispracticeisnotintendedfordeterminationoftherateofdegreeofdegradationofapolyethylene/polypropylenefilmorsheet,butrather,toassesswheninthecourseofitsdegradationundersomecondition,abrittlepointisreached.Ifonewishestomonitortensileelongationduringthedegradationprocess(suchaswhenthetensileelongationissignificantlygreaterthan5%),TestMethodD882isrecommended.Thispracticeshouldnotbeconsideredtheonlywayofdeterminingadegradation-endpoint.1.2Tensilepropertiesofplastics1.0mm(0.04in.)orgreaterinthicknessshallbedeterminedinaccordancewithTestMethodD638.1.3Useastaticweighing-constantrateofgripseparationtest.Thisprocedureemploysaconstantrateofseparationofthegripsholdingthesampleandastaticloadcell.Note18212;Thisprocedureisbasedontheuseofgripseparationasameasureofextension;however,thedesirabilityofusingextensionindicatorsaccuratetox00B1;1.0%orbetterasspecifiedinTestMethodD638isrecognized,andaprovisionfortheuseofsuchinstrumentationisincorporatedintheprocedure.1.4Thisprocedurehasbeensuccessfulfordeterminingthedegradationendpointofethylene-carbon-monoxidecopolymersandhasscreenedsuccessfullytwootheradditive-typepolyethylenesinaroundrobintest.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.7ThereisnoequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:4P.;A4
【正文语种】:英语
