1、BRITISH STANDARD BS EN 1011-5:2003 Welding Recommendations for welding of metallic materials Part 5: Welding of clad steel The European Standard EN 1011-5:2003 has the status of a British Standard ICS 25.160.10 BS EN 1011-5:2003 This British Standard was published under the authority of the Standard
2、s Policy and Strategy Committee on 2 May 2003 BSI 2 May 2003 ISBN 0 580 41755 7 National foreword This British Standard is the official English language version of EN 1011-5:2003. The UK participation in its preparation was entrusted to Technical Committee WEE/47, Miscellaneous welding standards, wh
3、ich has the responsibility to: A list of organizations represented on this committee 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 Catalogue under the sec
4、tion entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.
5、Compliance with a British Standard does not 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 re
6、lated international and European developments 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 11 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued
7、. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN10115 April2003 ICS25.160.10 Englishversion WeldingRecommendationsforweldingofmetallicmaterials Part5:Weldingofcladsteel SoudageRecommendationspourlesoudagedes matriauxmtalliquesPartie5:Souda
8、gedesaciers plaqus SchweienEmpfehlungenzumSchweienmetallischer WerkstoffeTeil5:SchweienvonplattiertenSthlen ThisEuropeanStandardwasapprovedbyCENon28February2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanatio
9、nalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheres
10、ponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,S
11、lovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN10115:
12、2003EEN10115:2003(E) 2 Contents page Foreword. 3 1 Scope 4 2 Normativereferences . 4 3 Termsanddefinitions. 5 4 Materials. 5 4.1 Cladsteels . 5 4.2 Parentmetal . 5 4.3 Cladding. 5 5 Weldingconsumablesforcladdingdeposits. 5 6 Weldingprocedures 6 7 Fabrication. 6 8 Welding 7 8.1 Weldingfrombothsides .
13、 . 7 8.2 Singlesidewelding. 7 8.3 Generalweldingconditions . 7 8.4 Weldingprocedurespecification. 8 9 Postweldcleaning 9 10 Testing 9 11 Correctionofnonconformities . 9 AnnexA (informative) Dilutionrate. 10 Bibliography . 11EN10115:2003(E) 3 Foreword Thisdocument(EN10115:2003)hasbeenpreparedbyTechni
14、calCommitteeCEN/TC 121,“Welding“,the secretariatofwhichisheldbyDS. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyOctober2003,andconflictingnationalstandardsshallbewithdrawnatthelatest byOctober2003. AccordingtotheCEN/CE
15、NELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,Switzerland
16、andtheUnitedKingdom.EN10115:2003(E) 4 1Scope ThisEuropeanStandardgivesgeneralrecommendationsforweldingofcladsteelsbymeansofappropriatearc weldingprocessesandelectroslagstripcladding. Itisgenerallyapplicabletoallcladsteelsandisappropriateregardlessofthetypeoffabricationinvolved,although theapplicatio
17、nstandardmayhaveadditionalrequirements.Nonferrouscladdings,suchastitanium,tantalum, zirconiumandtheiralloysarenotcoveredbythisstandard. ExamplesforjointpreparationaregiveninENISO96924. Thisstandardcoversweldingofcladdingdepositsaswellasweldingofthetransitionzone(s),whenexisting, betweenparentmetalan
18、dcladding.Thesetransitionzonesaremetal combinationsofnonalloyedferrousparent metalwithhighalloyedstainlesssteels,nickelalloysorothernonferrousmetals. Themechanicalandphysicaldesignofthejointsisnotcoveredbythisstandard.Methodsoftestingand acceptancelevelsarenotincludedbecausetheydependontheservicecon
19、ditionsofthefabrication.Thesedetails shouldbeobtainedfromthedesignspecification. Thecorrosionresistanceofthecladdingdependsonmanyfactorsandisnotapartofthisstandard. ForgeneralguidelinesseeEN10111. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpubl
20、ications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionoft
21、he publicationreferredtoapplies(includingamendments). EN10113, WeldingRecommendationsforweldingofmetallicmaterialsPart3:Arcweldingofstainless steels. EN100881, StainlesssteelsPart1:Listofstainlesssteels. prENISO5817, WeldingFusionweldedjointsinsteel,nickel,titaniumandtheiralloys(beamweldingexcluded)
22、 Qualitylevelsforimperfections(ISO/DIS5817:2002). ENISO96924, Weldingandalliedprocesses Recommendationsforjointpreparation Part4:Cladsteels (ISO96924:2003). ENISO13916, WeldingGuidanceonthemeasurementofpreheatingtemperature,interpasstemperatureand preheatmaintenancetemperature(ISO13916:1996). prENIS
23、O15607, SpecificationandapprovalofweldingproceduresformetallicmaterialsGeneralrules (ISO/DIS15607:2000). prENISO156091, SpecificationandapprovalofweldingproceduresformetallicmaterialsWeldingprocedure specificationPart1:Arcwelding(ISO/DIS156091:2000). prENISO156141, Specificationandapprovalofweldingp
24、roceduresformetallicmaterialsWeldingprocedure testPart1:Arcandgasweldingofsteelsandarcweldingofnickelandnickelalloys(ISO/DIS156141:2000).EN10115:2003(E) 5 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermanddefinitionapply. 3.1 cladsteel combinationoftwoormoredissimilarmeta
25、lsbondedinseparablytogetherbydifferentcladdingprocesses 4Materials 4.1Cladsteels Cladsteelscanbeproducedbyseveralcladdingprocessessuchas: hotrollcladding; explosive welding; surfacing by welding; combinedweld/hotrollcladding. Theinseparablecladding(commonly t 2 2mmwallthickness),whichwillbeincontact
26、withtheadjacentmedium, isdesignedtomeetrequirementssuchascorrosionresistance,abrasionand/orheatresistanceatdifferentworking temperatures. 4.2Parentmetal Theparentmetalisaweldablesteel,commonlyaccordingtoCRISO15608:2000(group1to6).Theparentmetal hastoprovidetherequiredstrengthandtoughnesstomaintainme
27、chanicalintegrity. 4.3Cladding Claddingincludes: StainlesssteelsaccordingtoEN100881; Nickelandnickelalloys; Copperandcopperalloys; Cobaltalloys(stellites). Claddingshallbecapableofbeingjoinedbyarcweldingprocessestotheparentmetals. Thefinishedsurfaceconditionsofcladdingparticularlyusedincomponentsfor
28、thechemicalindustryshould guaranteeanadequatecorrosionresistanceandotherspecifiedcharacteristics.Forinformationoncorrosion resistanceofcladdingseerelevantapplicationstandards. 5 Weldingconsumablesforcladdingdeposits Thecladdingdeposit,includingdilutionwiththecladding,shallbecompatiblewiththecladding
29、.Therefore, consumablesshouldbeselectedwithregardtotheparentmetal,tothecladdingandtheparticularapplication.The consumablesshallcomplywiththerelevantstandardsand/orspecifications. Whereconsumableinsertsareused,theyshallcorrespondwiththerelevantfillermetalcomposition.EN10115:2003(E) 6 Insomecases,thef
30、illermetalsusedforthebutteringmayalsobeusedforfillingandcappingruns,ifappropriate fortheapplication. Theserviceconditionsofacladsteelcomponent,suchasworkingtemperatureorpossiblepostweldheat treatment(PWHT)shallbeconsideredwhenselectingappropriateconsumables. Itisnecessarytopayattentiontotheeffectsof
31、dilutionwhendepositingonelayeronanother,especiallythefirst layerontheparentmetal.Theweldingprocess,theweldingconditionsandtheconsumableshaveasignificant influenceonthechemicalcompositionsandtheferritenumbers(FN)ofastainlesscladdingdeposit.Gainsor lossesofalloyingelements,forexamplethemetallurgicalre
32、actionsbetweenwire/stripandfluxesorgases,haveto betakenintoaccount. Iftheferritenumberisarequirementinthespecification,themethodsformeasurementaccordingtoENISO8249, e. g.themagneticdeterminationwithcalibratedinstruments,shouldbeinaccordancewiththedesign specification.Incaseofdispute,theWRC92constitu
33、tiondiagramshallbeused. 6 Weldingprocedures Differentarcweldingprocessesmaybeusedtoproducecladdingdepositsmatchingspecifiedrequirements. Depositsinone,twoormorelayerscanberealizedinordertoachievetherequiredcharacteristic.Thenumberof thelayersdependsonseveralfactorsandshouldbeconfirmedbyaweldingproce
34、durespecification. Commonlytheselectionofanyweldingproceduredependson: welding position; access conditions; alloytype; specifiedrequirements,suchasdilutionrate(whichshouldgenerallybekeptaslowaspossible,providedthat penetrationisadequate). 7Fabrication Whenstoring,handlingorfabricatingcladsteels,meas
35、uresshallbetakentoprojectthecladdingfrom contaminationandsurfacedamage.Incaseofdamageimpairstheserviceperformance,reconditioningshallbe undertakenaccordingtoEN 10113orotherrelevantstandards. Repairing/restoringofdamagedcladdingshallbesuchastoavoidtheformationofbrittlephases. Jointpreparationshallbei
36、naccordancewithENISO96924. Cladsteelscanbecutusingnormalmethods;shearing(forthinplates)andplasmacuttingshouldbestartedfrom thecladdingside.Whenpreparingjointfaces,oxidation,hardeningandgeneralcontaminationfromthermalcutting processesshallbeeliminatedbymechanicalmachining(grinding)toasufficientdepthf
37、romthecutface.During shearing,crackingandworkhardeningcanoccur;ifany,thisshallberemovedpriortowelding. Mechanicaljointpreparationispreferable. Coldorhotformingoperationscanbecarriedoutoncladsteelsbythemanufactureasappropriate.Theprocessing treatmentandinstructionsaresuppliedbythemanufacturerorfabric
38、atorasappropriate. Hardstampingonthecladdingcauseshighlystressedand/orcorrosionsensitiveareasandshallbeavoided. Alloperationsleadingtotheformationofbrittlephasesinthetransitionzones,forexamplewhengrinding,shallbe avoided.EN10115:2003(E) 7 8Welding 8.1Weldingfrombothsides 8.1.1 Parentmetal Theparentm
39、etalshallfirstbeweldedaccordingtoanqualifiedweldingprocedure. Therootrunshouldnotpenetrateintothecladding. 8.1.2 Singlelayercladdingdeposits Thecladdingdepositshallbeweldedbyaqualifiedweldingprocedure.Allrequirementsconcerningthearcwelding ofdissimilarmetalsshallbeobserved. Asinglelayercladdingdepos
40、itmaybeappliedwhentheweldingprocedurehasbeenshowntoachievethe specifiedrequirements,especiallythechemicalcomposition.Theconsumablesusedforthisapplicationshallbe sufficientlyalloyedtocompensatethedilutionwiththeparentmetalandtomatchthespecifiedcharacteristics.The weldingconsumablesshallbeverifiedbyaq
41、ualifiedprocedureandtheyshallbeappropriatefortheapplication. Weldingprocesseswithlowpenetrationcharacteristicsarerecommended. 8.1.3 Multilayercladdingdeposits Thecladdingdepositshallbeweldedbyaqualifiedprocedure.Allrequirementsconcerningthearcweldingof dissimilarmetalsshallbeobserved. Forthebutterin
42、g(firstlayer),thesameprocedureasmentionedin8.1.2maybevalid. Thesubsequentrunsshouldbeweldedusingconsumableswithahigherorequalalloycontenttothatofthe cladding,orbeadequatefortherequirements. 8.1.4 Nonferrouscladdingdeposits Fornonferrousmetalsandhightemperature( 300C)applications,specialagreementinth
43、edesign specificationsshallbeprovided. 8.2Singlesidewelding Inthecaseofsinglesidewelding,thejointpreparationaccordingtoEN22553isgenerallyan“HU“ora“U“ preparationfortheparentmetalwiththerootfaceentirelywithinthecladding(seeENISO96924,reference numbers:8and9).Therootrunshallbeweldedusingaprocessandconsumablesappropriatefortheapplication. Theweldingconsumablesshallbeverifiedbyaqualifiedprocedureandtheyshallbeappropriateforthe application. Thefillingrun(s)shallbeweldedwithconsumablesandproceduresascommo
