NF M81-510-1966 煤矿器材.牵引用导缆的轴座
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来源:标准资料网
【英文标准名称】:MININGEQUIPMENT.CABLE-GUIDEHEADSTOCKFORHAULAGESYSTEMS.
【原文标准名称】:煤矿器材.牵引用导缆的轴座
【标准号】:NFM81-510-1966
【标准状态】:作废
【国别】:法国
【发布日期】:1948-06
【实施或试行日期】:1966-12-30
【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】:纺织机械及附件;采掘设备;螺纹导向器;煤矿;煤矿开采;规范;设备规范;产品规范;尺寸
【英文主题词】:textilemachineryandaccessories;miningequipment;coalmines;coalmining;threadguides;specifications;dimensions;equipmentspecifications;productspecification
【摘要】:
【中国标准分类号】:D93
【国际标准分类号】:
【页数】:2P;A4
【正文语种】:其他
Product Code:SAE AS9312
Title:Stud, Shouldered and Stepped, Hexagon Wrenching, Drilled, Steel, .250-28 Unf-3a X .375-24 Unf-3a
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:No scope available.【英文标准名称】:StandardPracticeforDe-AgglomerationofRefractoryMetalPowdersandTheirCompoundsPriortoParticleSizeAnalysis
【原文标准名称】:粒径分析前耐熔金属粉末及其化合物去除结块的标准实施规程
【标准号】:ASTMB859-2003(2008)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:B09.03
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:de-agglomeration;laboratory-milled;laboratorymilling;molybdenum;particlesizeanalysis;powders;refractorymetals;rhenium;rod-milled;rodmilling;tantalum;tungsten;tungstencarbide;De-agglomeration;Laboratory-milledpowders;Molybd
【摘要】:Refractorymetalpowders,suchastungstenandmolybdenum,areusuallyproducedbyhydrogenreductionathightemperatures.Thus,theyusuallycontainnumerouslarge,strongly-sinteredagglomerates.Manyofthemanufacturingprocessesusingthesepowdersinvolveamillingsteporsomesimilartreatmentordependontheindividualparticulatesize,notontheagglomeratesize.Thus,aknowledgeoftheindividualparticulatesizedistribution,nottheagglomeratesizedistribution,isusuallydesiredfromaparticlesizeanalysisofthesepowders.Thispracticeprovidesaprocedureforbreakingdownagglomeratesintotheirconstituentparticles(de-agglomeration),withoutexcessivefractureoftheindividualparticles.Theprocedureisoftenreferredtoaslaboratorymillingorrodmilling.Thelaboratorymillingconditionsspecifiedinthisguidehavebeeninusesince1965aspartofTestMethodB430.Thisguidewasfirstpublishedasaseparate,stand-alonestandardin1995becauseofitsapplicabilityinpreparingpowdersamplesforanalysisbyothermethods(forexample,TestMethodsB761andB822),inadditiontoTestMethodB430.Informationonthedevelopmentandestablishmentofthemillingconditionsherespecifiedcanbefoundinthefootnotedreference.Themillingproceduredescribedinthispracticedoesnotnecessarilybreakdownonlyagglomerateswithoutfracturingindividualparticles;someparticlefracturemayoccurincertainpowders.However,useofthispracticedoesprovideconsistentparticlesizeanalysisresultsthathavebeenfoundtorelatewelltopowderbehaviorinnumerousmanufacturingprocesses.Thispracticeshallbeusedforthede-agglomerationoftherefractorymetalpowdersandcompoundslistedin1.1,whenanevaluationoftheindividualparticulatesizedistributionisrequiredfromthesubsequentparticlesizeanalysis.Itshallnotbeusedwhentheagglomerate(as-isoras-supplied)sizedistributionisdesired.ThispracticemaybeusedinpreparingsamplesforTestMethodsB330,B430,B761,B822,andotherparticlesizeanalysismethods,priortothedispersionprocedureofGuideB821,ifused.1.1Thispracticecoversthede-agglomerationofrefractorymetalpowdersandtheircompoundsinpreparationforparticlesizeanalysis.1.2Experiencehasshownthatthispracticeissatisfactoryforthede-agglomerationofelementaltungsten,molybdenum,rhenium,andtantalummetalpowders,andtungstencarbide.Othermetalpowders(forexample,elementalmetals,carbides,andnitrides)maybepreparedforparticlesizeanalysisusingthispracticewithcautionastoeffectivenessuntilactualsatisfactoryexperienceisdeveloped.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeNote2.
【中国标准分类号】:H16
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】:英语
