1、BRITISH STANDARD AEROSPACE SERIES BS EN 3475-509:2002 Cables, electrical, aircraft use Test methods Part 509: Solderability The European Standard EN 3475-509:2002 has the status of a British Standard ICS 49.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 3475-509:2002
2、 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 11 July 2002 BSI 11 July 2002 ISBN 0 580 40052 2 National foreword This British Standard is th
3、e official English language version of EN 3475-509:2002. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Subcommittee ACE/6/2, Aerospace cables, which has the responsibility to: A list of organizations re
4、presented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Corre
5、spondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does no
6、t of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developme
7、nts and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 5, and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd.
8、 No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3475509 June2002 ICS49.060 Englishversion AerospaceseriesCables,electrical,aircraftuseTest methodsPart509:Solderability SriearospatialeCbleslectriquesusage aronautiqueMthodesdessaisPartie509:Soudabilit LuftundRaumfahrtElektrischenLei
9、tungenfrLuftfahrt VerwendungPrfverfahrenTeil509:Ltbarkeit ThisEuropeanStandardwasapprovedbyCENon20January2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbib
10、liographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifie
11、dtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEF
12、ORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3475509:2002EEN3475509:2002(E) 2 Foreword Thisdocument(EN3475509:2002)hasbee
13、npreparedbytheEuropeanAssociationofAerospace Manufacturers(AECMA). AfterenquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandar
14、dshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyDecember2002,andconflictingnationalstandardsshallbe withdrawnatthelatestbyDecember2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesar
15、eboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway, Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdomEN3475509:2002(E) 3 1 Scope Thisstandardspecifiesamethodofassessingthesolderabilit
16、yofconductorsandscreensorstrandstaken fromthem. ItshallbeusedtogetherwithEN3475100. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.For
17、datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies. EN2083 AerospaceseriesCopperorcopperalloyconductorsinelectricalcablesProduct stan
18、dard EN3475100 AerospaceseriesCables,electrical,aircraftuseTestmethodsPart100:General 3 Principleofthetest Apreparedspecimenisverticallysuspendedfromasensitivebalanceinsuchamannerthatitisimmersedto asetdepthinabathofmoltensolderatacontrolledtemperature.Theresultingverticalforcesofbuoyancy andsurface
19、tensionactinguponthespecimenaredetectedbyatransducerandconvertedintoasignalthat iscontinuouslyrecordedasafunctionoftimeonahighspeedchartrecorder. Thetestisnotapplicabletosize020(gauge14)andlarger. 4 Preparationofspecimens Preparethespecimensasfollows. 4.1 Cableconductors Removeatleast150mmfromtheend
20、ofthecableanddiscard.Cutfivespecimensofapproximately30mm lengthfromtheremainingcable.Stripthespecimensofinsulationtoexposealengthof14,5mmto15mmof conductor,takingcaretoensurethatnopartofthesurfaceortheexposedconductorbecomes contaminated,especiallybycontactwiththefingers.Minimizeandcorrectanydisturb
21、anceofthestrands. 4.2 Screens Takefivespecimenstrandsfromthecompletedcable.Ensurethatnopartsofthestrandbecomes contaminated,especiallybycontactwiththefingers.EN3475509:2002(E) 4 5 Apparatus Theapparatuscomprisingabalance,transducer,chartrecorderandsolderbathshallcomplywiththe followingcharacteristic
22、s: theresponsetimeofthechartrecordershallbesuchthatitsreturntocentrezeroonremovalofa maximumloadshallbeaccomplishedwithin0,3swithanovershootcorrespondingtonotmorethan1% ofthemaximumload; therecordingsystemshallhaveanumberofsensitivitysettings,themostsensitivecorrespondingat leasttoamaximumdeflection
23、fromcentrebeingproducedwhena200mgmassissuspendedfromthe specimenholder; thechartspeedshallnotbelessthan10mm/s; electricalandmechanicalnoiserecordedinthetraceshallnotexceedtheequivalentof4,10 - 5 Npeak topeak; thedeflectionofthewritingdeviceshallbedirectlyproportionaltotheforcebeingmeasuredoverthe fu
24、llscaletoanaccuracyofbetterthan95%; thestiffnessofthespringsystemofthebalanceshallbesuchthataloadof10 - 2 Ncausesavertical displacementofthespecimensuspensionnotexceeding0,1mm; thedimensionsofthesolderbathshallbesuchthatnoportionofthespecimenislessthan15mm fromthewallandthedepthofthebathshallbenotle
25、ssthan15mm; theimmersiondepthofthelowestpointonthespecimenshallbeadjustabletoanyspecifiedposition between2mmand5mmwithamaximumerrorof 0,2mm; thespeedofimmersionandwithdrawalshallbe(20 5 )mm/s; thedwelltimeatthemaximumimmersiondepthshallbeadjustable. 6 Method Mountthespecimeninasuitableholder.Immerse
26、thewholeofthesurfaceofthespecimentobetestedina fluxatroomtemperatureasspecifiedbelowfortheappropriateconductortype.Immediatelydrainoffexcess fluxbystandingthespecimenverticallyoncleanfilterpaperfor1sto5s.Fillthesolderbathwiththealloy specifiedbelowfortheconductortypeundertestandraiseittothetemperatu
27、reshown. ForEN2083conductortypesB(tinplated)andC(silverplated)useSn63solder(63%tin,37%lead)at (235 3 )Cwithnonactivatedpurecollophonyresinflux. ForconductortypeD(nickelplated)useSn96solder(96,5%tin,3,5silver)at(271 5 )Cwithcollophony resinfluxactivatedto0,5%chloridelevel. Suspendthespecimenverticall
28、ywithitscutend(20 5)mmabovethesurfaceofthemoltensolderfor (30 15 )stoallowmostofthefluxsolventtoevaporate.Duringthisdryingperiod,scrapethesurfaceofthe moltensolderwithabladeofsuitablematerialtoremoveoxidesandadjustthesuspensionandchart recordertracetothedesiredzeroposition. Immersethespecimeninthemo
29、ltensolderataspeedof(20 5 )mm/stoadepthof(4 1 )mmandholdin thispositionfornotlessthan10sandthenwithdraw.Obtainatraceofforceversustimefromthestartofthe loweringuntilthespecimenreturnstothestartposition. NOTE Atypicaltraceisshowninfigure1.Thewettingtimeistakentobethetimedifferencebetween t2 and t1.EN3
30、475509:2002(E) 5 7 Requirement Themaximumwettingtimeshallbestatedintheproductstandard. NOTE Solderabilitywilldecreasewithagedependinguponthetime,temperatureandhumidityofthe storageconditions. Figure1Typicalforce/timetraceforsolderabilitytest Time Wetting time t 2 t 1BS EN 3475-509:2002 BSI 389 Chisw
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