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【英文标准名称】:StandardSpecificationforElectrodepositedCoatingsofCadmium
【原文标准名称】:镉电沉积涂层的标准规范
【标准号】:ASTMB766-1986(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1986
【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】:B08.08.04
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:cadmium;electrodepositedcoatings;electrodepositedcoatings;cadmium;Adhesion--coatings;Aerospaceapplications--specifications;Cadmiummetals/alloys--specifications;Cadmiummetals(coating/plating)--specifications;Chromatecoatings--specificati
【摘要】:1.1Thisspecificationcoverstherequirementsforelectrodepositedcadmiumcoatingsonproductsofiron,steel,andothermetals.Note18212;Cadmiumisdepositedasacoatingprincipallyonironandsteelproducts.Itcanalsobeelectrodepositedonaluminum,brass,berylliumcopper,copper,nickel,andpowdermetallurgyparts.1.2Thecoatingisprovidedinvariousthicknessesuptoandincluding25x03BC;meitheraselectrodepositedorwithsupplementaryfinishes.1.3Cadmiumcoatingsareusedforcorrosionresistanceandforcorrosionpreventionofthebasismetalpart.Theas-depositedcoating(TypeI)isusefulforthelowestcostprotectioninamildornoncorrosiveenvironmentwhereearlyformationofwhitecorrosionproductsisnotdetrimentalorharmfultothefunctionofacomponent.Theprimepurposeofthesupplementarychromatefinishes(TypesIIandIII)ontheelectroplatedcadmiumistoincreasecorrosionresistance.Chromatingwillretardorpreventtheformationofwhitecorrosionproductsonsurfacesexposedtovariousenvironmentalconditionsaswellasdelaytheappearanceofcorrosionfromthebasismetal.1.4Cadmiumplatingisusedtominimizebi-metalliccorrosionbetweenhigh-strengthsteelfastenersandaluminumintheaerospaceindustry.Undercuttingofthreadsonfastenerpartsisnotnecessaryasthecadmiumcoatinghasalowcoefficientoffrictionthatreducesthetighteningtorquerequiredandallowsrepetitivedismantling.1.5Cadmium-coatedpartscaneasilybesolderedwithouttheuseofcorrosivefluxes.Cadmium-coatedsteelpartshavealowerelectricalcontactresistancethanzinc-coatedsteel.Thelubricityofcadmiumplatingisusedonspringsfordoorsandlatchesandforweavingmachineryoperatinginhighhumidity.Corrosionproductsformedoncadmiumaretightlyadherent.Unlikezinc,cadmiumdoesnotbuildupvoluminouscorrosionproductsonthesurface.Thisallowsforproperfunctioningduringcorrosiveexposureofmovingparts,threadedassemblies,valves,anddelicatemechanismswithoutjammingwithdebris.
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:9P.;A4
【正文语种】:英语


【英文标准名称】:Designcriteriaofoverheadtransmissionlines
【原文标准名称】:架空输电线路的设计标准
【标准号】:IEC60826-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-10
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC11
【标准类型】:()
【标准水平】:()
【中文主题词】:荷载能力;尺寸选定;稳定性(机械性能);建设类型要求;输电线;定义;电气工程;设计;高电压;安全;安全要求;负荷;额定电压;绝缘子;规范(验收);电缆;气候荷载;材料强度;铁塔;冰荷载;可靠度;电线;架空线;风荷载;电力导线
【英文主题词】:Climaticloading;Consistency(mechanicalproperty);Constructiontyperequirements;Definition;Definitions;Design;Dimensioning;Electriccables;Electricinsulators;Electricalcords;Electricalengineering;Electricitytransmission;Highvoltage;Iceloading;Loadcapacity;Loading;Overheadpowerlines;Powerlines;Pylons;Ratedvoltage;Reliability;Safety;Safetyrequirements;Specification(approval);Strengthofmaterials;Windloading
【摘要】:Specifiestheloadingandstrengthrequirementsofoverheadlinesderivedfromreliabilitybaseddesignprinciples.Therequirementsapplytolinesof45kVandabove,buttheycanalsobeappliedtolineswithalowernominalvoltage.Thedesigncriteri
【中国标准分类号】:F21
【国际标准分类号】:29_240_20
【页数】:252P;A4
【正文语种】:英语