EN ISO 25239-4:2011

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Varjenje z gnetenjem - Aluminij - 4. del: Zahteve in kvalifikacija varilnega postopka (ISO 25239-4:2011)Rührreibschweißen - Aluminium - Teil 4: Anforderung und Qualifizierung von Schweißverfahren (ISO 25239-4:2011)Soudage par friction-malaxage - Aluminium - Partie 4: Descriptif et qualification des modes opératoires de soudage (ISO 25239-4:2011)Friction stir welding - Aluminium - Part 4: Specification and qualification of welding procedures (ISO 25239-4:2011)77.120.10Aluminij in aluminijeve zlitineAluminium and aluminium alloys25.160.10Varilni postopki in varjenjeWelding processesICS:Ta slovenski standard je istoveten z:EN ISO 25239-4:2011SIST EN ISO 25239-4:2012en,fr01-marec-2012SIST EN ISO 25239-4:2012SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 25239-4
December 2011 ICS 25.160.10 English Version
Friction stir welding - Aluminium - Part 4: Specification and qualification of welding procedures (ISO 25239-4:2011)
Soudage par friction-malaxage - Aluminium - Partie 4: Descriptif et qualification des modes opératoires de soudage (ISO 25239-4:2011)
Rührreibschweißen - Aluminium - Teil 4: Anforderung und Qualifizierung von Schweißverfahren (ISO 25239-4:2011) 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 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 translation 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, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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Reference numberISO 25239-4:2011(E)© ISO 2011
INTERNATIONAL STANDARD ISO25239-4First edition2011-12-15Friction stir welding — Aluminium Part 4: Specification and qualification of welding procedures Soudage par friction-malaxage — Aluminium Partie 4: Descriptif et qualification des modes opératoires de soudage
ISO 25239-4:2011(E)
©
ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56  CH-1211 Geneva 20 Tel.
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ii © ISO 2011 – All rights reserved
ISO 25239-4:2011(E) © ISO 2011 – All rights reserved iii Contents 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 pWPS . 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 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 test of lap welds . 17 Annex D (informative)
Welding procedure qualification record form. 19 Bibliography . 22
ISO 25239-4:2011(E) iv © ISO 2011 – All rights reserved Foreword ISO (the International Organization 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 established 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. International Standards are drafted in accordance with the rules given in the ISO/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 member 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 — Aluminium:  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 to the ISO Central Secretariat, who will forward them to the IIW Secretariat for an official response.
ISO 25239-4:2011(E) © ISO 2011 – All rights reserved v Introduction Welding processes are widely used in the fabrication of engineered structures. During the second half of the twentieth 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 melting). 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 because, 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 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 aluminium. 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 special 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 rules 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 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 phase 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 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 International 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 patent right. SIST EN ISO 25239-4:2012

ISO 25239-4:2011(E) vi © ISO 2011 – All rights reserved The 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 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 Kingd
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