1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 25239-4:2011Friction stir welding AluminiumPart 4: Specification and qualification ofwelding procedures (ISO 25239-4:2011)BS EN ISO 25239-4:2011 BRITISH STANDARDNationa
2、l forewordThis British Standard is the UK implementation of EN ISO25239-4:2011.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/41, Friction welding.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does n
3、ot purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012ISBN 978 0 580 60295 5ICS 25.160.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publis
4、hed under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 25239-4 December 2011 ICS 25.160.10 English Version Friction stir welding - Aluminium - Part 4: Speci
5、fication and qualification of welding procedures (ISO 25239-4:2011) Soudage par friction-malaxage - Aluminium - Partie 4: Descriptif et qualification des modes opratoires de soudage (ISO 25239-4:2011) Rhrreibschweien - Aluminium - Teil 4: Anforderung und Qualifizierung von Schweiverfahren (ISO 25239
6、-4:2011) This European Standard was approved by CEN on 4 June 2011. 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. Up-to-date lists and bibliographica
7、l 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 translation under the responsibility o
8、f 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, Finland, France, Germany, Greece, Hunga
9、ry, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre
10、: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 25239-4:2011: EBS EN ISO 25239-4:2011EN ISO 25239-4:2011 (E) 3 Foreword This document (EN ISO 25239-4:2011) has been prepared by the Inter
11、national Institute of Welding in collaboration with Technical Committee CEN/TC 121 “Welding” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2012, and
12、 conflicting national standards shall be withdrawn at the latest by June 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. Accordi
13、ng to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy
14、, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 25239-4:2011 has been approved by CEN as a EN ISO 25239-4:2011 without any modification. BS EN ISO 25239-4
15、:2011ISO 25239-4:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv Introduction . v 1 Scope 1 2 Normative references 1 3 Terms and definitions . 2 4 Symbols and abbreviated terms 2 5 Development and qualification of welding procedures . 2 5.1 General . 2 5.2 Technical content of a pW
16、PS . 3 6 Qualification based on a welding procedure test 5 6.1 General . 5 6.2 Test pieces . 5 6.3 Examination and testing of test pieces . 7 6.4 Range of qualification . 13 6.5 Welding procedure qualification record . 13 7 Qualification based on pre-production welding test . 13 7.1 General . 13 7.2
17、 Test pieces . 14 7.3 Examination and testing of test pieces . 14 7.4 Range of qualification . 14 7.5 Welding procedure qualification record . 14 Annex A (informative) Preliminary welding procedure specification 15 Annex B (informative) Non-destructive testing 16 Annex C (informative) Hammer S-bend
18、test of lap welds . 17 Annex D (informative) Welding procedure qualification record form 19 Bibliography 22 BS EN ISO 25239-4:2011ISO 25239-4:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodie
19、s (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 established has the right to be represented on that committee. International organizations,
20、 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. International Standards are drafted in accordance with the rules given in the ISO
21、/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the m
22、ember bodies casting a vote. ISO 25239-4 was prepared by the International Institute of Welding, which has been approved as an international standardizing body in the field of welding by the ISO Council. ISO 25239 consists of the following parts, under the general title Friction stir welding Alumini
23、um: Part 1: Vocabulary Part 2: Design of weld joints Part 3: Qualification of welding operators Part 4: Specification and qualification of welding procedures Part 5: Quality and inspection requirements Requests for official interpretations of any aspect of this part of ISO 25239 should be directed t
24、o the ISO Central Secretariat, who will forward them to the IIW Secretariat for an official response. BS EN ISO 25239-4:2011ISO 25239-4:2011(E) ISO 2011 All rights reserved vIntroduction Welding processes are widely used in the fabrication of engineered structures. During the second half of the twen
25、tieth century, fusion welding processes, wherein fusion is obtained by the melting of parent material and usually a filler metal, dominated the welding of large structures. Then, in 1991, Wayne Thomas at TWI invented friction stir welding (FSW), which is carried out entirely in the solid phase (no m
26、elting). The increasing use of FSW has created the need for this International Standard in order to ensure that welding is carried out in the most effective way and that appropriate control is exercised over all aspects of the operation. This International Standard focuses on the FSW of aluminium be
27、cause, at the time of publication, the majority of commercial applications for FSW involved aluminium. Examples include railway carriages, consumer products, food processing equipment, aerospace structures, and marine vessels. To parts of this International Standard are listed in the foreword. Part
28、1 defines terms specific to FSW. Part 2 specifies design requirements for FSW joints in aluminium. Part 3 specifies requirements for the qualification of an operator for the FSW of aluminium. Part 4 specifies requirements for the specification and qualification of welding procedures for the FSW of a
29、luminium. A welding procedure specification (WPS) is needed to provide a basis for planning welding operations and for quality control during welding. Welding is considered a special process in the terminology of standards for quality systems. Standards for quality systems usually require that speci
30、al processes be carried out in accordance with written procedure specifications. Metallurgical deviations constitute a special problem. Because non-destructive testing of the mechanical properties is impossible at the present level of technology, this has resulted in the establishment of a set of ru
31、les for qualification of the welding procedure prior to the release of the WPS to actual production. This part of ISO 25239 defines these rules. Part 5 specifies a method for determining the capability of a manufacturer to use the FSW process for the production of aluminium products of the specified
32、 quality. It defines specific quality requirements, but does not assign those requirements to any specific product group. To be effective, welded structures should be free from serious problems in production and in service. To achieve that goal, it is necessary to provide controls from the design ph
33、ase through material selection, fabrication, and inspection. For example, poor design can create serious and costly difficulties in the workshop, on site, or in service. Incorrect material selection can result in welding problems, such as cracking. Welding procedures have to be correctly formulated
34、and qualified to avoid imperfections. To ensure the fabrication of a quality product, management should understand the sources of potential trouble and introduce appropriate quality and inspection procedures. Supervision should be implemented to ensure that the specified quality is achieved. The Int
35、ernational Organization for Standardization (ISO) draws attention to the fact that it is claimed that compliance with this document may involve the use of patents concerning friction stir welding given in Clauses 5 to 7. ISO takes no position concerning the evidence, validity and scope of this paten
36、t right. BS EN ISO 25239-4:2011ISO 25239-4:2011(E) vi ISO 2011 All rights reservedThe following holder of this patent right has assured ISO that it is willing to negotiate licenses under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the
37、 statement of the holder of this patent right is registered with ISO. Further information may be obtained from: TWI Ltd Granta Park, Great Abington CAMBRIDGE CB21 6AL United Kingdom Telephone: +44 1223 891162 (international); 01223 891162 (national) Telefax: +44 1223 892588 (international); 01223 89
38、2588 (national) E-mail: twitwi.co.uk Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified above. ISO shall not be held responsible for identifying any or all such patent rights. BS EN ISO 25239-4:2011INTERNAT
39、IONAL STANDARD ISO 25239-4:2011(E) ISO 2011 All rights reserved 1Friction stir welding Aluminium Part 4: Specification and qualification of welding procedures 1 Scope This part of ISO 25239 specifies the requirements for the specification and qualification of welding procedures for the friction stir
40、 welding (FSW) of aluminium. In this part of ISO 25239, the term “aluminium” refers to aluminium and its alloys. This part of ISO 25239 does not apply to friction stir spot welding. NOTE Service requirements, materials or manufacturing conditions can require more comprehensive testing than is specif
41、ied in this part of ISO 25239. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appl
42、ies. ISO 209, Aluminium and aluminium alloys Chemical composition ISO 857-1, Welding and allied processes Vocabulary Part 1: Metal welding processes ISO 2107, Aluminium and aluminium alloys Wrought products Temper designations ISO 3134 (all parts), Light metals and their alloys Terms and definitions
43、 ISO 4136, Destructive tests on welds in metallic materials Transverse tensile test ISO 5173, Destructive tests on welds in metallic materials Bend tests ISO 6520-1, Welding and allied processes Classification of geometric imperfections in metallic materials Part 1: Fusion welding ISO 9017, Destruct
44、ive tests on welds in metallic materials Fracture test ISO 10042, Welding Arc-welded joints in aluminium and its alloys Quality levels for imperfections ISO 13916, Welding Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature ISO 14175, Weld
45、ing consumables Gases and gas mixtures for fusion welding and allied processes ISO 15607:2003, Specification and qualification of welding procedures for metallic materials General rules BS EN ISO 25239-4:2011ISO 25239-4:2011(E) 2 ISO 2011 All rights reservedISO 15613, Specification and qualification
46、 of welding procedures for metallic materials Qualification based on pre-production welding test ISO 15614-2, Specification and qualification of welding procedures for metallic materials Welding procedure test Part 2: Arc welding of aluminium and its alloys ISO 17637, Non-destructive testing of weld
47、s Visual testing of fusion-welded joints ISO 17639, Destructive tests on welds in metallic materials Macroscopic and microscopic examination of welds ISO/TR 17671-1, Welding Recommendations for welding of metallic materials Part 1: General guidance for arc welding ISO 25239-1, Friction stir welding
48、Aluminium Part 1: Vocabulary ISO 25239-5:2011, Friction stir welding Aluminium Part 5: Quality and inspection requirements ISO 80000-1:2009, Quantities and units Part 1: General 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 209, ISO 857-1, ISO 3134
49、, ISO 6520-1, ISO 10042, ISO 15607, ISO 15613, ISO 15614-2, ISO/TR 17671-1, and ISO 25239-1 apply. 4 Symbols and abbreviated terms For the purposes of qualification of welding procedures, the abbreviations listed in ISO 15607:2003, Table 1, apply. 5 Development and qualification of welding procedures 5.1 General Qualification of welding procedures shall be performed prior to production welding. The manufacturer shall prepare a preliminary welding procedure specification (pWPS) and sha
