DIN 49644 T.6-1984 IEC灯头量规.成品灯G5灯头用的"过端"量规
时间:2024-05-04 03:46:46 来源: 标准资料网 作者：标准资料网 阅读：9681
【英文标准名称】:IECcapgauges;"GO"gaugeforcapG5onfinishedlamps
【原文标准名称】:IEC灯头量规.成品灯G5灯头用的"过端"量规
【标准号】:DIN49644T.6-1984
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【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】:
【国际标准分类号】:
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Product Code:SAE AS4354
Title:Hose Assembly, Polytetrafluoroethylene, Cres Reinforced, 400 掳F, 3000 psi, Heavyweight, Beam Seal, Straight to 90掳
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:No scope available.【英文标准名称】:StandardSpecificationforElectrodepositedCoatingsofTin-LeadAlloy(SolderPlate)
【原文标准名称】:锡铅合金的电解沉积镀层(焊接板)
【标准号】:ASTMB579-1973(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1973
【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】:electrodepositedcoatings,tin-leadalloy(solderplate);solder,tin-leadalloy;tin-lead;Artificialaging;Bendtesting--coatings;Burnishingtest--forcoatingadhesion;Coatingadhesion--electrodepositedcoatings;Copperalloyelectrodepositedcoat
【摘要】:1.1Thisspecificationcoverstherequirementsforelectrodepositedtin-leadcoatingsonfabricatedarticlesofiron,steel,copper,andcopperalloys,toprotectthemagainstcorrosion(Note1),toimproveandpreservesolderabilityoverlongperiodsofstorage,andtoimproveanti-gallingcharacteristics.Note18212;Somecorrosionoftin-leadcoatingsmaybeexpectedinoutdoorexposure.Innormalindoorexposure,tin-leadisprotectiveoniron,copper,andcopperalloys.Corrosionmaybeexpectedatdiscontinuities(pitsorpores)inthecoating.Porositydecreasesasthethicknessisincreased.Aprimaryuseofthetin-leadcoating(solder)iswiththeprintedcircuitindustryasasolderablecoatingandasanetchmaskmaterial.1.2Thisspecificationappliestoelectrodepositedcoatingscontainingaminimumof50%andamaximumof70%tin.Thespecificationappliestomat,bright,andflow-brightenedtin-leadcoatings.Note28212;Tin-leadplatingbathsarecomposedoftinandleadfluoboratesandofadditionagentstopromotestability.Thefinalappearancemaybeinfluencedbytheadditionofproprietarybrighteners.Withoutbrighteners,thecoatingsaremat;withbrighteners,theyaresemibrightorbright.Flow-brightenedcoatingsareobtainedbyheatingmatcoatingstoabovethemeltingpointoftin-leadforafewsecondsandthenquenching;palmoil,hydrogenatedoils,orfatsareusedasaheat-transfermediumatatemperatureof260x00B1;10x00B0;C(500x00B1;20x00B0;F),butothermethodsofheatingarealsoinuse.Themaximumthicknessforflow-brighteningisabout7.5x03BC;m(0.3mil);thickercoatingstendtoreflowunevenly.Theshapeofthepartisalsoafactor;flatsurfacestendtoreflowmoreunevenlythanwiresorroundedshapes(Note3).Note38212;Volatileimpuritiesintin-leadcoatingswillcausebubblingandfoamingduringflow-brighteningresultinginvoidsandroughness.Theimpuritiescanarisefromplatingsolutionadditionagentsandfromimproperrinsingandprocessing.1.3Thisspecificationdoesnotapplytosheet,strip,orwireintheunfabricatedformortothreadedarticleshavingbasicmajordiametersuptoandincluding19mm(0.75in.).
【中国标准分类号】:A29
【国际标准分类号】:25_220_40
【页数】:5P.;A4
【正文语种】:英语