1、BSI Standards PublicationBS EN ISO 11970:2016Specification and qualificationof welding procedures forproduction welding of steelcastingsBS EN ISO 11970:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO11970:2016. It supersedes BS EN ISO 11970:2007 which i
2、swithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/111, Steel Castings and Forgings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a c
3、ontract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 76497 4ICS 25.160.10; 77.140.80Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published u
4、nder the authority of theStandards Policy and Strategy Committee on 30 April 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11970 March 2016 ICS 25.160.10; 77.140.80 Supersedes EN ISO 11970:2007English Version S
5、pecification and qualification of welding procedures for production welding of steel castings (ISO 11970:2016) Descriptif et qualification de modes opratoires de soudage pour le soudage de production des aciers mouls (ISO 11970:2016) Anforderungen und Anerkennung von Schweiverfahren fr das Produktio
6、nsschweien von Stahlguss (ISO 11970:2016) This European Standard was approved by CEN on 10 January 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration
7、. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by t
8、ranslation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Fi
9、nland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZA
10、TION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11970:2016 EBS EN ISO 11970:2016EN ISO 119
11、70:2016 (E) 3 European foreword This document (EN ISO 11970:2016) has been prepared by Technical Committee ISO/TC 17 “ Steel“ in collaboration with Technical Committee ECISS/TC 111 “Steel castings and forgings” the secretariat of which is held by AFNOR. This European Standard shall be given the stat
12、us of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2016, and conflicting national standards shall be withdrawn at the latest by September 2016. Attention is drawn to the possibility that some of the elements of this document may be the
13、 subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 11970:2007. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to imple
14、ment this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
15、 Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 11970:2016 has been approved by CEN as EN ISO 11970:2016 without any modification. BS EN ISO 11970:2016ISO 11970:2016(E)Foreword vIntroduction vi1 Scope .12 Normative references 13 Term
16、s and definitions .24 Preliminary welding procedure specification (pWPS) .25 Welding procedure qualification .26 Test piece 26.1 General . 26.2 Shape and dimensions of test piece 26.3 Welding of sample 37 Examination and testing .57.1 Extent of testing . 57.2 Location and cutting of test specimens .
17、 57.3 Non-destructive testing . 57.4 Destructive test . 77.4.1 Transverse (to weld groove) tensile test . 77.4.2 Macro-examination 77.4.3 Micro-examination . 77.4.4 Impact test . 77.4.5 Hardness test 77.5 Qualification and retesting . 87.6 Welder qualification . 88 Range of qualification .88.1 Gener
18、al . 88.2 Related to the manufacturer . 88.3 Related to the material . 98.3.1 Parent metal Grouping system for cast steel grades 98.3.2 Parent metal thickness (range of qualification) 108.4 Common to all welding procedures . 108.4.1 Welding process 108.4.2 Welding positions .108.4.3 Type of joint 10
19、8.4.4 Filler metal . 108.4.5 Type of current .108.4.6 Heat input . 108.4.7 Preheat temperature .118.4.8 Interpass temperature .118.4.9 Post-weld heat treatment 118.5 Specific to process . 118.5.1 Processes 111 manual metal arc welding (metal arc welding with covered electrode); shielded metal arc we
20、lding and 114 (self-shielded tubular-cored arc welding). . 118.5.2 Process 121 (submerged arc welding with one wire electrode).118.5.3 Processes 131 (metal-arc inert gas welding; MIG welding; gas metal arc welding), 135 (metal active gas welding; MAG welding; gas metal arc welding), 136 (tubular cor
21、ed metal arc welding with active gas shield; flux cored arc welding) and 138 (MAG welding with metal cored electrode) .118.5.4 Process 141 (Tungsten inert gas welding; TIG welding; gas tungsten arc welding) 119 Welding procedure qualification record (WPQR) .11 ISO 2016 All rights reserved iiiContent
22、s PageBS EN ISO 11970:2016ISO 11970:2016(E)Annex A (informative) Record form (WPQR) welding procedure qualification Test certificate 13Annex B (normative) Details of weld test .14Bibliography .16iv ISO 2016 All rights reservedBS EN ISO 11970:2016ISO 11970:2016(E)ForewordISO (the International Organi
23、zation for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been establishe
24、d has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.T
25、he procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the
26、editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
27、 rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an
28、 explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this
29、 document is ISO/TC 17, Steel, Subcommittee SC 11, Steel castings.This second edition cancels and replaces the first edition (ISO 11970:2001), which has been technically revised. In particular, Figures 1, 2 and 3 have been redrawn to clarify labels. ISO 2016 All rights reserved vBS EN ISO 11970:2016
30、ISO 11970:2016(E)IntroductionAll welding procedure qualifications for production welding of steel castings are intended to be in accordance with this International Standard.Previous procedure qualifications that conform to the range of qualification of Clause 8 are valid under this International Sta
31、ndard.Where additional tests have to be carried out to complete the qualification, it is only necessary to perform the additional tests to the requirements of Clauses 6 and 7.vi ISO 2016 All rights reservedBS EN ISO 11970:2016Specification and qualification of welding procedures for production weldi
32、ng of steel castings1 ScopeThis International Standard specifies how a welding procedure specification (WPS) for production welding of steel castings is qualified.It defines the conditions for the execution of welding procedure qualification tests and the limits of validity of a qualified welding pr
33、ocedure for all practical welding operations within the range of essential variables.Tests are intended to be carried out in accordance with this International Standard unless additional tests are specified by the purchaser or by agreement between the contracting parties.This International Standard
34、applies to the arc welding of steel castings. The principles of this International Standard can be applied to other fusion welding processes subject to agreement between the contracting parties.In the case of specific service, material or manufacturing conditions, tests more comprehensive than those
35、 specified by this International Standard can be specified by the purchaser, in order to gain more information, e.g. longitudinal weld tensile tests, bend tests, chemical analyses, ferrite determination in austenitic stainless steels, elongation, Charpy “V” impact tests, and radiography.2 Normative
36、referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable to its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies
37、.ISO 148-1, Metallic materials Charpy pendulum impact test Part 1: Test methodISO 857-1, Welding and allied processes Vocabulary Part 1: Metal welding processesISO 4136, Destructive tests on welds in metallic materials Transverse tensile testISO 4969, Steel Macroscopic examination by etching with st
38、rong mineral acidsISO 4986, Steel castings Magnetic particle inspectionISO 4987, Steel castings Liquid penetrant inspectionISO 4992-1, Steel castings Ultrasonic examination Part 1: Steel castings for general purposesISO 4992-2, Steel castings Ultrasonic examination Part 2: Steel castings for highly
39、stressed componentsISO 4993, Steel and iron castings Radiographic inspectionISO 5817, Welding Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) Quality levels for imperfectionsISO 6507-1, Metallic materials Vickers hardness test Part 1: Test methodISO 6892-1, M
40、etallic materials Tensile testing Part 1: Method of test at room temperatureISO 9016, Destructive tests on welds in metallic materials Impact tests Test specimen location, notch orientation and examinationINTERNATIONAL STANDARD ISO 11970:2016(E) ISO 2016 All rights reserved 1BS EN ISO 11970:2016ISO
41、11970:2016(E)ISO 9606-1, Qualification testing of welders Fusion welding Part 1: SteelsISO 15607, Specification and qualification of welding procedures for metallic materials General rulesISO 15612, Specification and qualification of welding procedures for metallic materials Qualification by adoptio
42、n of a standard welding procedure3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 857-1 and ISO 15607 and the following apply.3.1production weldingany welding carried out during manufacturing before final delivery to the purchaser3.1.1joint weldingprod
43、uction welding used to weld cast components together or weld cast components to wrought steels3.1.2finishing weldingproduction welding carried out in order to ensure the agreed quality of the casting3.2repair weldingwelding carried out after delivery to the end user, i.e. after the casting has been
44、in service4 Preliminary welding procedure specification (pWPS)A preliminary welding procedure specification shall be prepared. It shall specify the range of all the relevant parameters in accordance with ISO 15612.5 Welding procedure qualificationThe making and testing of test specimens representing
45、 the type and the position of welding used in production shall be in accordance with Clauses 6 and 7.The welder who undertakes the welding procedure test satisfactorily in accordance with this International Standard is qualified for the appropriate range of qualification according to ISO 9606-1. Add
46、itional welders shall be qualified in accordance with 7.6.6 Test piece6.1 GeneralThe test piece shall be in accordance with those shown in Figures 1, 2, 3, and 4.Dimensions in the figures are for information only and may be adjusted to meet production and testing requirements.6.2 Shape and dimension
47、s of test pieceAdditional test pieces, or longer test pieces than the minimum size may be prepared in order to allow for extra and/or retesting specimens (in accordance with 7.5).2 ISO 2016 All rights reservedBS EN ISO 11970:2016ISO 11970:2016(E)6.3 Welding of sampleThe preparation and welding of th
48、e sample shall be carried out in accordance with the relevant pWPS. Angular tolerances may be agreed between the contracting parties or by the relevant application standard.The dimensions and shape of the groove shall be in accordance with Figures 1, 2, 3, and 4.If tack welds are to be fused into th
49、e final joint, they shall be included in the sample.Unless otherwise specified in the purchase order or contract review, welding and testing of the samples shall be witnessed by an examiner (or test body). When the examiner (or test body) is not specified in the purchase order, the manufacturer may appoint a suitable examiner.Keyt base metal thickness 15 mmd depth of cavity 0,5 t. For TIG welding, “d” may be 0,5 tFigure 1 Weld cross section for weld cavityKeyt base metal thickness 15 mmr root widt
