1、BRITISH STANDARD BS EN 10244-6:2001 Steel wire and wire products Non-ferrous metallic coatings on steel wire Part 6: Copper, bronze or brass coatings The European Standard EN 10244-6:2001 has the status of a British Standard ICS 25.220.40; 77.140.65 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMIT
2、TED BY COPYRIGHT LAWBS EN 10244-6:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 2001 BSI 05-2001 ISBN 0 580 37147 6 National foreword This British
3、Standard is the official English language version of EN 10244-6:2001. The UK participation in its preparation was entrusted to Technical Committee ISE/26, Steel wire, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. C
4、ross-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 Correspondence Index”, or by using the “Find” facility of the BSI Standards Electr
5、onic 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 not of itself confer immunity from legal obligations. aid enquirers to understa
6、nd the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover,
7、an inside front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN102446 March2001 ICS25.22
8、0.40 Englishversion SteelwireandwireproductsNonferrousmetalliccoatingson steelwirePart6:Copper,bronzeorbrasscoatings FilsetproduitstrfilsenacierRevtementsmtalliques nonferreuxsurfilsdacierPartie6:Revtementsde cuivre,bronzeoulaiton StahldrahtundDrahterzeugnisseberzgeaus NichteisenmetallaufStahldrahtT
9、eil6:berzgeaus Kupfer,BronzeoderMessing ThisEuropeanStandardwasapprovedbyCENon21January2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalrefere
10、ncesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCe
11、ntrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITE
12、UROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN102446:2001EPage2 EN102446:2001 Contents Page Foreword .3 1 Scope4 2 Normativereference. .4 3 Termsa
13、nddefinitions. 4 4 Requirementsrelatingtocoating5 4.1 Material.5 4.2 Coatingmass .5 4.3 General .5 4.4 Porosity 5 5 Testconditions. .5 5.1 Samples5 5.1.1 General .5 5.1.2 Lengthofsamples. 5 5.2 Determinationofmassofcoating .5 5.2.1 General .5 5.2.2 Gravimetricmethod 5 5.2.3 Useofchemicalmethodsforde
14、terminingcoatingmass .6 5.3 Porosity 6 5.3.1 Principle .6 5.3.2 Determinationoftheporosity. .6Page3 EN102446:2001 Foreword ThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeECISS/TC30“Steelwires“,the secretariatofwhichisheldbyBSI. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eit
15、herbypublicationofan identicaltextorbyendorsement,atthelatestbySeptember2001,andconflictingnationalstandards shallbewithdrawnatthelatestbySeptember2001. ThisEuropeanStandardfornonferrousmetalliccoatingonsteelwireismadeupofthefollowing parts: Part1:Generalprinciples Part2:Zincandzincalloycoatings Par
16、t3:Aluminiumcoatings Part4:Tincoatings Part5:Nickelcoatings Part6:Copper,bronzeandbrasscoatings AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthe followingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,
17、Greece,Iceland,Ireland,Italy,Luxembourg, Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.Page4 EN102446:2001 1Scope ThispartofthisEuropeanStandardspecifiestherequirementsformass;otherpropertiesandtesting ofcopper,bronzeandbrasscoatingsonsteelwireandsteelwireproducts. 2 Normat
18、ivereference ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromother publications.Thesenormativereferencesarecitedattheappropriateplacesinthetextandthe publicationsarelistedhereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofany ofthesepublicationsapplytothisEuropea
19、nStandardonlywhenincorporatedinitbyamendmentor revision.Forundatedreferencesthelatesteditionofthepublicationreferredtoapplies(including amendments). EN102441,SteelwireandwireproductsNonferrousmetalliccoatingsonsteelwire Part1:Generalprinciples EN102444, SteelwireandwireproductsNonferrousmetalliccoat
20、ingsonsteelwirePart4:Tin coatingsonsteelwire 3 Termsanddefinitions ForthepurposesofthisEuropeanstandardthefollowingtermsanddefinitionsapply. 3.1 wirewithcopper,bronzeorbrasscoating wiretowhichacopper,bronzeorbrasscoatinghasbeenappliedeitherbychemicalconversionby electrolysisorbyanextrusionorbycladdi
21、ngprocess 3.1.1 wirewithcoppercoating wirecoatedwithessentiallypureunalloyedcopper 3.1.2 wirewithbronzecoating wirecoatedwithanalloyconsistingessentiallyofcopperandtininspecifiedproportions 3.1.3 wirewithbrasscoating wirecoatedwithanalloyconsistingessentiallyofcopperandzincinspecifiedproportions 3.2
22、 massofcoating themassofcopper,bronzeorbrasscoatingperunitofsurfaceareaisexpressedingramspersquare meter.Insomecasesthemassofcoatingischaracterisedbyitsthicknessmeasuredinradial directionPage5 EN102446:2001 4 Requirementsrelatingtocoating 4.1Material Coppercoatingshallcontainatleast98%copper.Forbron
23、zeorbrassmaterialthepermissible variationofthealloycompositionshallbespecifiedattheenquiryandorder. 4.2Coating mass Thecoatingmass,whenrequired,shallbeagreedatthetimeofenquiryandorderoraccordingtothe productstandard. 4.3General SeerequirementsinEN102441. 4.4Porosity Iftheorderspecificationsrequireit
24、,atestshallbecarriedouttoestablishthepresenceofsmallareas ofporosityinthecoating.Inthiscaseporositydoesnotmeanadegreeofsurfaceroughnessbut extremelyfinediscontinuitiesinthecoatinggivingdirectaccesstothebasemetal. 5Test conditions 5.1Samples 5.1.1General SeethegeneralrequirementsinEN102441. 5.1.2 Len
25、gthofsamples Thelengthofthesamplesshallbesufficienttoallowthevariousteststobecarriedout. 5.2 Determinationofmassofcoating 5.2.1General Themassofthecoatingshallbedeterminedbyfirststrippingthecoating.Thentheamountofcoating isdeterminedbymeasuringthedifferenceinweight(gravimetricmethod)beforeandafterst
26、rippingor bydeterminingchemicallytheamountofcoatinginthestrippingsolution.Thesamplelengthshallbe inaccordancewithTable1inEN102444. 5.2.2Gravimetric method 5.2.2.1 Procedurefordeterminingthecoatingmass Ifnecessary,degreasethesamplewithasuitablesolvent.Weighthesampletoanaccuracyof0,1mg (mass m 1 ).Pag
27、e6 EN102446:2001 Stripthesamplesinconcentratedammonia(NH 3 )diluteddirectlybeforeusewithanequalvolumeof (NH 4 ) 2 S 2 O 8 10%analyticpurity(ammoniumthiosulfate). Afterstripping,rinsethesamples,drythemandonceagainweighthemtothesameaccuracy(mass m 2 ).Ifthemassdifferenceislessthan10mg,repeatthetestwit
28、hasuitablylongersample. Determinethediameterdofthewire. 5.2.2.2 Calculationofmassofcoating ThecalculationshallbecarriedoutinaccordancewithEN102441ordeterminedusingthefollowing formula: Coatingmass 2 2 1 2 1962 / m d m m m g 5.2.3 Useofchemicalmethodsfordeterminingcoatingmass Usingaknowvolumeofstripp
29、ingsolution,itispossibletodeterminetheamountofcoatinginthe solutionafterstripping,whichenablesthedeterminationofthemassofcoatingdissolvedandhence themassofcoatingperunitofsurfacearea.Thiscanbedonebytheatomicabsorptionspectrometer, bycolorimetryoranyotherappropriatemethod.Someofthesemethodsalsopermit
30、thecheckingof thetypeofalloycoatingonthewire. 5.3Porosity 5.3.1Principle Copperandcopperalloyscoveringthesteelprovideagoodprotectionagainstchemicalattack. Thereforeporositiesinthecoating,leavingthebaresteelincontactwiththeoutsideatmosphere,are weakpointsagainstcorrosion. Theporositytestisdesignedtog
31、iveanindicationofthequalityofthecoatingandthedegreeof porosityofthematerial.Thisisachievedbyimmersingasampleofthecoatedwireinasolutionof dilutedhydrochloricacid.Indoingso,theacidcomingincontactwiththebaresteelsurfacewill dissolvetheiron. 5.3.2 Determinationoftheporosity Bendsamplesof30cmlongsothatth
32、eycaneasilybeimmersedinarecipientof1litre.Inthecase ofwireofasize0,50mmorfineruseacontinuouslengthof2mwoundtoacoilofabout10cm diameter. Degreasethesampleswithasuitableorganicsolvent,dryfor10minat75C,cooltoambient temperatureandweighto0,1mgprecision( m 1 ing).Coverthecutendsofthesamplewitha protectiv
33、elayer. Prepareasolutionof500mlHCl1Ninabeakerof800mlandheatgentlyto40C5Cin waterbath.Stirwithamagneticstirrerat500t/minandintroducethesamples.After15minremove thesamplesandrinsewithdeionizedwater.Page7 EN102446:2001 Pourthesolutionintoagraduatedbeakerof1l.Rinsetheemptybeakerwithsomedeionizedwater, t
34、henaddtothesolution.Add50mlpureaceticacid,letcoolto20C5Candadddeionizedwater tothemarkof1l.ShakethoroughlyanddeterminetheamountofFeppmbyatomicabsorption spectrometer(a). ThedegreeofporosityofthecoatingisexpressedbytheratiomgFe/m 2 wire.Theconcentrationof Feinthesolutioncorrelatestothesurfaceofthesam
35、ples. Theporosityfactor( P)is 1 1962 m d P Where a:Theconcentrationofironinppm d:wirediameterinmm m 1 :ThemassofthesamplebeforethetestingramsBS EN 10244-6:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing Br
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