NF E25-002-2010 紧固件.螺栓,螺钉,螺柱和螺母.尺寸规格描述和标志
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来源:标准资料网
【英文标准名称】:Fasteners-Bolts,screws,studsandnuts-Symbolsanddescriptionsofdimensions.
【原文标准名称】:紧固件.螺栓,螺钉,螺柱和螺母.尺寸规格描述和标志
【标准号】:NFE25-002-2010
【标准状态】:现行
【国别】:法国
【发布日期】:2010-12-01
【实施或试行日期】:2010-12-10
【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】:螺栓;名称与符号;尺寸选定;尺寸规格;制图规范;制图体系;图纸;紧固件;六角头螺钉;六角凹头螺钉;尺寸指示;机械连接;螺母;螺钉;螺柱;调查;符号;螺纹端部;螺纹紧固件;词汇表
【英文主题词】:Bolts;Designations;Dimensioning;Dimensions;Drawingspecifications;Drawingsystem;Drawings;Fasteners;Hexagonheadscrews;Hexagonsocketscrews;Indicationofdimensions;Mechanicallinkages;Nuts;Screws(bolts);Studs(fasteners);Surveys;Symbols;Threadends;Threadedfasteners;Vocabulary
【摘要】:
【中国标准分类号】:J13
【国际标准分类号】:21_060_10
【页数】:69P;A4
【正文语种】:其他
【英文标准名称】:R-CurveDetermination
【原文标准名称】:R-曲线测定
【标准号】:ASTME561-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【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】:试验;金属;测定;工艺
【英文主题词】:determination;metals;processes;testing
【摘要】:
【中国标准分类号】:H20
【国际标准分类号】:77_040_00
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforRubberDeterioration-CrackinginanOzoneControlledEnvironment
【原文标准名称】:臭氧可控环境中橡胶变坏龟裂的标准试验方法
【标准号】:ASTMD1149-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D11.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:炭黑;变坏;天然橡胶;臭氧龟裂;橡胶;表面;合成橡胶;测试
【英文主题词】:chamber;cracking;deterioration;ozone;rubber;surface;test
【摘要】:Thesignificanceofthesetestmethodsliesintheabilitytodifferentiatebetweenthedegreesofozoneresistanceunderthelimitedandspecifiedconditionsoftheacceleratedtests.Thedegreeofresistancebeingjudgedbytheappearanceandmagnitudeoftheformationofcracksinthesurfaceofthesubjectmaterial.Inservice,rubbermaterialsdeterioratewhenexposedtoozone.Itisimperativetohavetestmethodsinwhichsimple,acceleratedtime/exposure,comparisonsofthematerialx2019;sabilitytoresistcrackingcausedbyozoneexposurecanbeempiricallyevaluated.Suchtestscanbeusedforproducer/consumeracceptance,refereepurposes,research,anddevelopment.Thesemethodsarenotnecessarilysuitedforuseinpurchasespecificationsastheremaybenocorrelationwithserviceperformanceasactualserviceconditions(outdoorexposure)varywidelyduetogeographiclocationand,therefore,maynotyieldrepeatableorreproducibleresults.1.1Thesetestmethodsareusedtoestimatetheeffectofexposure,undersurfacetensilestrainconditions,eitherdynamicorstatic,inanatmospherecontainingspecifiedlevelsofozoneconcentration,expressedaspartialpressure(refertoNote1),onvulcanizedrubber,rubbercompounds,moldedorextrudedsoftrubber,andotherspecifiedmaterials,orasmaybedeterminedempirically.Theeffectofnaturallyoccurringsunlightorlightfromartificialsourcesisexcluded.1.2PreviouslypublishedASTMdocumentsTestMethodD518andTestMethodsD3395havebeenincludedinthesetestmethods,D1149,in2007.PleaserefertoNote2.1.2.1TestMethodD518andTestMethodsD3395havehenceforthbeenwithdrawnandsupersededbyTestMethodsD1149.WhenTestMethodsD1149iscited,orotherwisereferenced,anotationshallbeincludedtothiseffect.Pleaserefertosectionfortheappropriatereferences.1.3Thespecifiedconditionsofexposuretoozoneinthecontrolledenvironmentsareacceleratedincomparisontooutdoorexposure.Theseacceleratedozonetestmethodsmaynotgiveresultswhichcorrelatewithoutdoorexposuretestsorserviceperformance.1.4Allmaterials,instruments,orequipmentusedforthedeterminationofmass,force,dimension,ozoneconcentration,partialpressure,temperature,velocity,andgasexchangerateshallhavedirecttraceabilitytotheNationalInstituteforStandardsandTechnology,orotherinternationallyrecognizedorganizationparallelinnature.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.ManyofthestatedSIunitsaredirectconversionsfromtheU.S.CustomarySystemtoaccommodatetheinstrumentation,practices,andproceduresthatexistedpriortotheMetricConversionActof1975.Thisstandardinvolveshazardousmaterials,specificallyozone.Itmayalsoinvolvehazardousoperationsandequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1AdiscussionandexplanationregardingthemeasurementofozoneconcentrationsbaseduponpartsofozoneperunitofairversuspartialpressureisprovidedinTestMethodsD4575,specificallyAppendicesX1andX2.TestMethodsD4575isalsorecommendedasasourceofbackgroundinformationregardingstandardsinvolvingmaterialsexposedtoozone.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:11P.;A4
【正文语种】:
