1、BRITISH STANDARD BS EN ISO 17655:2003 Destructive tests on welds in metallic materials Method for taking samples for delta ferrite measurement The European Standard EN ISO 17655:2003 has the status of a British Standard ICS 25.160.40 BS EN ISO 17655:2003 This British Standard was published under the
2、 authority of the Standards Policy and Strategy Committee on 20 March 2003 BSI 20 March 2003 ISBN 0 580 41051 X National foreword This British Standard is the official English language version of EN ISO 17655:2003. It is identical with ISO 17655:2003. The UK participation in its preparation was entr
3、usted to Technical Committee WEE/2, Welding tests, which 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 doc
4、ument may be found in the BSI Catalogue under the section 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
5、. Users are responsible for its correct application. 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 c
6、hange, 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, an inside front cover, the EN ISO title page, pages 2 to 9 and a back cover. The BSI copyright date displayed in t
7、his document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO17655 March2003 ICS25.160.40 Englishversion DestructivetestsonweldsinmetallicmaterialsMethodfor takingsamplesfordeltaferritemeasurem
8、ent(ISO17655:2003) Essaisdestructifsdessouduressurmatriauxmtalliques Mthodedchantillonnagepourlamesuredelaferrite delta(ISO17655:2003) ZerstrendePrfungvonSchweiverbindungenan metallischenWerkstoffenVerfahrenzurProbenahmefr dieBestimmungdesDeltaferritAnteils(ISO17655:2003) ThisEuropeanStandardwasappr
9、ovedbyCENon25November2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtot
10、heManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenatio
11、nalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,SlovakRepublic,Spain,Sweden,Switzerland and UnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKO
12、MITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO17655:2003EENISO17655:2003(E) 2 Contents page Foreword3 Introduction .4 1 Scope 5 2 Normativereferences 5 3 Termsanddefinitions. .5
13、4 Symbolsanddescriptions 6 5 General6 6 Principle6 7 Designation.6 8 Procedure .6 8.1 Locationofmeasurementsurface . 6 8.2 Preparationofmeasurementsurface 7 8.3 Instruments.7 8.4 Calibration 7 8.5 Procedure .7 9 Testreport . .8 Bibliography 9ENISO17655:2003(E) 3 Foreword Thisdocument(ENISO17655:2003
14、)hasbeenpreparedbyTechnicalCommitteeCEN/TC121,“Welding“,the secretariatofwhichisheldbyDS,incollaborationwithISO/TC44“Weldingandalliedprocesses“. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbySeptember2003,andconflicting
15、nationalstandardsshallbewithdrawnatthe latestbySeptember2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Ita
16、ly,Luxembourg,Malta,Netherlands,Norway,Portugal, SlovakRepublic,Spain,Sweden,SwitzerlandandtheUnitedKingdom.ENISO17655:2003(E) 4 Introduction BywayofdeparturefromthisEuropeanStandard,ENISO8249describesmethodsofmanufacturingofprimary andsecondarystandardsforcalibrationofferritetestinginstrumentsandgi
17、vesinformationfordeterminingthe ferritecontentofallweldmetalunderspecifiedandreproducibleconditions.ENISO17655:2003(E) 5 1 Scope ThisEuropeanStandardspecifiesthedeterminationofthedeltaferritecontentofwelds,ofsurfacingswith austeniticweldmetal,weldingbeingcarriedoutonweldingproceduretestsandproductio
18、ncoupontestplates usinganyfusionweldingprocessthatissuitableforausteniticmaterials,withorwithoutfillermetalincludingwelds madeoncomponents. Itisintendedthattheferritenumberbeusedexclusivelyforstatingthedeltaferritecontentofausteniticweldmetal asdeterminedbythemethoddescribedhere. 2 Normativereferenc
19、es ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardo
20、nlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN15971, Weldingconsumables Testmethods Part1:Testpieceforallweldmetaltestspecimensinsteel, nickelandnickelalloys. ENISO8249:2000, WeldingDeterminationofFerriteNu
21、mber(FN)inausteniticandduplexferriticausteniticCrNi stainlesssteelweldmetals(ISO8249:2000) . 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply. 3.1 allweldmetal fillermetalthathassolidifiedafterweldingandhasnotmixedwiththeparentmetal 3.2 weldmetal metalc
22、omposedofparentmetaland/orfillermetalorametaldepositedduringsurfacing 3.3 deltaferrite bodycentredmodificationofironformedathightemperaturesstableatambienttemperature 3.4 primaryweldmetalstandards samplesofcarbonsteelparentmetalcoveredwithnonmagneticlayersofdifferentthickness ENISO8249:2000 3.5 seco
23、ndaryweldmetalstandards calibratedwithprimaryweldmetalstandards 3.6 ferritenumber measureoftheforcerequiredtodetachapermanentmagnetfromanausteniticweldmetalsample(“tearoffforce“, forshort)ENISO17655:2003(E) 6 3.7 ferritepercent percentageofdeltaferriteinanausteniticmaterial 4 Symbolsanddescriptions
24、Table1 Symbolsanddescriptions Symbol Description Unit FN Ferritenumber No. FP Ferritepercent % d ferrite Deltaferrite No.or% 5 General Austeniticweldmetalmay,asafunctionofitschemicalcompositionandofthecoolingconditionsduringthe weldingprocess,containa d ferritephase.Acertainamountof d ferritemaybede
25、sirabletoincreasetheresistance oftheausteniticweldmetaltohotcracking;however,italsoreducescorrosionresistanceandpromotesthe formationofabrittlesigmaphaseatelevatedoperatingtemperatures.Knowledgeofthe d ferritecontentisthus necessarytoallowtheweldmetalpropertiestobepredicted. 6P r i n c i p l e Physi
26、calmethodsofmeasurementarebasedonthefactthat d ferriteismagnetic,whereasaustenite,carbides, sigmaphaseandinclusionsarenonmagnetic. Thetermferritenumber“(FN)isusedtodesignatethe d ferritecontent.Inthepast,theferritenumberwas determinedarbitrarilybymeasuringtheattractiveforcebetweenapermanentmagnetofd
27、efinedstrengthandsize andsteelsampleswithelectroplatednonmagneticcoatingsofdifferentthickness. Thus,exceptforlowlevelsof d ferritecontent(below10%),theferritenumberisnotnecessarilyidenticalwiththe percentageferritecontentoftheweldmetal. 7 Designation Thevalueofferritenumber(FN),asdeterminedinaccorda
28、ncewiththisstandard,shallbedesignatedandreported onthetestcertificateasfollows,whichrelatestoameasuredvalueof8: Measurement: 8FN 8 Procedure 8.1 Locationofmeasurementsurface Inthecaseofallweldmetal,themeasurementsurfaceshallbelocatedasdescribedinEN15971.Forwelds,the measurementsshallbetakenatthecent
29、reoftheweld,takingintoaccountthecharacteristicsoftheinstrument whenmeasuringsmallweldsorthinsurfacingsconsistingofausteniticmaterials.ENISO17655:2003(E) 7 8.2 Preparationofmeasurementsurface Themeasurementsurfaceshallbebrightandsmoothandsufficientlyflatsoastoensureadequatecouplingofthe testmagnetort
30、estprobe.Tothiseffect,thetoprunshallbesmooth,e.g.bygrindingand/orfiling,inthedirectionof theweldbead.Nounacceptablemicrostructurechanges(e.g.formationofdeformationmartensite)ortemper coloursshallbeformedduringgrinding. Thelengthofthemeasurementsurfaceshallbe40mm,withaminimumwidthof5mm.Themeasurement
31、surface shallnotexhibitanyweldbeadstartsandendcratersandshallbefreefromforeignmatter,suchaslubricants,dirt ormagneticparticles. 8.3 Instruments Suitableinstrumentshallbeusedtodeterminetheferritenumber,takingintoaccounttheirrangeofapplicationas specifiedbythemanufacturer. 8.4 Calibration Priortouse,t
32、heinstrumentsshallbecalibratedwiththeaidofsecondaryweldmetalstandardsaccordingto ENISO8249.Thesecondaryweldmetalstandardandthespecifiedmeasuringrangeshallbeselectedtosuitthe ferritenumbertobedetermined. 8.5 Procedure Since d ferriteisnotuniformlydistributedinthematerial,theresultobtainedforoneandthe
33、sameweldmetalmay varyfrommeasuringpointtomeasuringpoint.Thus,measurementshallbecarriedoutatsixpointsequallyspaced alongthecentrelineofthemeasurementsurface(seeFigure1). Theferritenumberisthearithmeticalaveragevaluefrom6singlemeasurements,roundedtothenextwhole number.Testingshallbecarriedoutatambient
34、temperature.Thegaugingsurfaceshallnotbeexposedtoimpacts orvibrationsduringmeasuring. Dimensionsinmillimetres Key L p =lengthoftestsurface L m =lengthofmeasurementsurface Figure1 MeasurementsurfacewithmeasuringpointsENISO17655:2003(E) 8 9 Testreport Thetestreportshallincludeareferencetothisstandardan
35、dprovidethefollowinginformation: a) referencetoweldmetaldesignation; b) informationonwhethermeasurementwasmadeonaweldprocedureorproductioncomponent; c) locationofmeasurementsurfaceonthecomponent; d) instrumentused; e) ferritenumberofsecondaryweldmetalstandardandmeasuringrangeused; f) ferritenumberde
36、termined; g) anydeviationsfromthisstandard.ENISO17655:2003(E) 9 Bibliography ENISO6847, WeldingconsumablesDepositionofaweldmetalpadforchemicalanalysis(ISO6847:2000)BS EN ISO 17655:2003 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body res
37、ponsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest ame
38、ndments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be
39、found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign sta
40、ndards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: ordersbsi-. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the BSI implementati
41、on of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic informati
42、on services are also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: infobsi-. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the
43、 purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membershipbsi-. Information regarding online access to British Standards via British Standards Online can be found at http:/www.bsi- Fur
44、ther information about BSI is available on the BSI website at http:/www.bsi-. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of neces
