1、April 2017 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 25.160.40!%dTm“2654974www.din.deDI
2、N EN ISO 17637Nondestructive testing of welds Visual testing of fusionwelded joints (ISO 17637:2016);English version EN ISO 17637:2016,English translation of DIN EN ISO 17637:2017-04Zerstrungsfreie Prfung von Schweiverbindungen Sichtprfung von Schmelzschweiverbindungen (ISO 17637:2016);Englische Fas
3、sung EN ISO 17637:2016,Englische bersetzung von DIN EN ISO 17637:2017-04Contrle non destructif des assemblages souds Contrle visuel des assemblages souds par fusion (ISO 17637:2016);Version anglaise EN ISO 17637:2016,Traduction anglaise de DIN EN ISO 17637:2017-04SupersedesDIN EN ISO 17637:201105www
4、.beuth.deDocument comprises 18 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.04.17 DIN EN ISO 17637:2017-04 2 A comma is used as the decimal marker. National foreword This document (EN ISO 17637:2016) has been prepared by Tec
5、hnical Committee ISO/TC 44 “Welding and allied processes” in collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials
6、 Testing), Working Committee NA 062-08-27 AA “Visual and thermographic testing“. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 5817 DIN EN ISO 5817 ISO 9712 DIN EN ISO 9712 ISO 10042 DIN EN ISO 10042 ISO 13385 (all parts) DIN EN ISO 1
7、3385 (all parts) ISO 17635 DIN EN ISO 17635 Amendments This standard differs from DIN EN ISO 17637:2011-05 as follows: a) the standard has been brought into line with the state of the art; b) the standard has been harmonized with current rules of presentation. Previous editions DIN EN 970: 1997-03 D
8、IN EN ISO 17637: 2011-05 DIN EN ISO 17637:2017-04 3 National Annex NA (informative) Bibliography DIN EN ISO 5817, Welding Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) Quality levels for imperfections DIN EN ISO 9712, Non-destructive testing Qualification a
9、nd certification of NDT personnel DIN EN ISO 10042, Welding Arc-welded joints in aluminium and its alloys Quality levels for imperfections DIN EN ISO 13385 (all parts), Geometrical product specifications (GPS) Dimensional measuring equipment DIN EN ISO 17635, Non-destructive testing of welds General
10、 rules for metallic materials DIN EN ISO 17637:2017-04 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17637 December 2016 ICS 25.160.40 Supersedes EN ISO 17637:2011English Version Non-destructive testing of welds - Visual testing of fusion-welded joints (
11、ISO 17637:2016) Contrle non destructif des assemblages souds - Contrle visuel des assemblages souds par fusion(ISO 17637:2016) Zerstrungsfreie Prfung von Schweiverbindungen - Sichtprfung von Schmelzschweiverbindungen(ISO 17637:2016) This European Standard was approved by CEN on 19 October 2016. CEN
12、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 appli
13、cation 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 Man
14、agement 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latv
15、ia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marni
16、x 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 17637:2016 EEuropean foreword .31 Scope . 52 Normative references 53 Terms and definitions . 54 Test conditions and equipment . 55 Personnel qualificati
17、on . 66 Visual testing 66.1 General . 66.2 Visual testing of joint preparation . 66.3 Visual testing during welding 66.4 Visual testing of the finished weld . 76.4.1 General 76.4.2 Cleaning and dressing . 76.4.3 Profile and dimensions . 76.4.4 Weld root and surfaces . 76.4.5 Post-weld heat treatment
18、 . 86.5 Visual testing of repaired welds . 86.5.1 General 86.5.2 Partially removed weld 86.5.3 Completely removed weld . 87 Test records 8Annex A (informative) Examples of test equipment 10Bibliography .14Contents PageDIN EN ISO 17637:2017-04 EN ISO 17637:2016 (E) 2Foreword .4European foreword This
19、document (EN ISO 17637:2016) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” the secretariat of which is held by DIN. This European Standard shall be given the status of a national s
20、tandard, either by publication of an identical text or by endorsement, at the latest by June 2017, and conflicting national standards shall be withdrawn at the latest by June 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. C
21、EN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 17637:2011. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
22、 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, Slovakia, Slovenia, Spain,
23、Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17637:2016 has been approved by CEN as EN ISO 17637:2016 without any modification. DIN EN ISO 17637:2017-04 EN ISO 17637:2016 (E) 3 ForewordISO (the International Organization for Standardization) is a worldwide f
24、ederation 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 co
25、mmittee. 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.The procedures used to develop this document
26、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 editorial rules of the ISO/IEC Directives, P
27、art 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 rights identified during the development of
28、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 explanation on the meaning of ISO specific te
29、rms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 44, W
30、elding and allied processes, Subcommittee SC 5, Testing and inspection of welds.This second edition cancels and replaces the first edition (ISO 17637:2003), which has been technically revised.Requests for official interpretations of any aspect of this International Standard should be directed to the
31、 Secretariat of ISO/TC 44/SC 5 via your national standards body. A complete listing of these bodies can be found at www.iso.org.DIN EN ISO 17637:2017-04 EN ISO 17637:2016 (E) 4 1 ScopeThis document specifies the visual testing of fusion welds in metallic materials. It may also be applied to visual t
32、esting of the joint prior to welding.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electrope
33、dia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp4 Test conditions and equipmentThe illuminance at the surface with white light shall be a minimum of 350 lx; wearing of tinted goggles (e.g. protective sunglasses) increases the minimum illu
34、minance. However, 500 lx is recommended.For direct inspection, the access shall be sufficient to place the eye within 600 mm of the surface to be examined and at an angle not less than 30 (see Figure 1).aRange.Figure 1 Access for testingRemote inspection using mirrors, boroscopes, fibre optic cables
35、 or cameras shall be considered when the access for testing in accordance with Figure 1 is not possible or when specified by an application standard.An additional light source can be used to increase the contrast and relief between imperfections and the background.DIN EN ISO 17637:2017-04 EN ISO 176
36、37:2016 (E) 5 Where the result of visual testing is inconclusive, the visual test should be supplemented by other non-destructive testing methods for surface inspections.Examples of equipment used for visual testing are given in Annex A.5 Personnel qualificationVisual testing of welds and the evalua
37、tion of results for final acceptance shall be performed by qualified and capable personnel. It is recommended that the personnel performing indirect visual testing is qualified according to ISO 9712 or at an appropriate level in the relevant industry sector.6 Visual testing6.1 GeneralThis document d
38、oes not define the extent of visual testing. However, this should be determined in advance, e.g. by reference to an application or product standard.The examiner shall have access to the necessary inspection and production documentation required.Any visual testing prior to, during or after completion
39、 of the weld should be carried out while physical access is still possible. This may include the visual testing of surface treatments.6.2 Visual testing of joint preparationWhen visual testing is required prior to welding, the joint shall be examined to check the following:a) the shape and dimension
40、s of the weld preparation meet the requirements of the welding procedure specification;b) the fusion faces and adjacent surfaces are clean and any required surface treatment has been carried out in accordance with the application or product standard;c) the parts to be welded are correctly fixed in r
41、elation to each other according to drawings or instructions.6.3 Visual testing during weldingWhen required, the weld shall be tested during the welding process to check the following:a) each run or layer of weld metal is cleaned before it is covered by a further run, particular attention being paid
42、to the junctions between the weld metal and the fusion face;b) there are no visible imperfections, e.g. cracks or cavities; if imperfections are observed, they shall be reported so that remedial action can be taken before the deposition of further weld metal;c) the transition between the runs and be
43、tween the weld and the parent metal is so formed that satisfactory melting can be accomplished when welding the next run;d) the depth and shape of gouging is in accordance with the WPS or compared with the original groove shape in order to ensure complete removal of the weld metal as specified;e) af
44、ter any necessary repairs/remedial action, the weld conforms to the original requirements of the WPS.DIN EN ISO 17637:2017-04 EN ISO 17637:2016 (E) 6 6.4 Visual testing of the finished weld6.4.1 GeneralThe finished weld shall be examined to determine whether it meets the requirements of the applicat
45、ion or product standard or other agreed acceptance criteria, e.g. ISO 5817 or ISO 10042. Finished welds shall at least be examined in accordance with the requirements given in 6.4.2 to 6.4.5.6.4.2 Cleaning and dressingThe weld shall be examined to check the following:a) all slag has been removed by
46、manual or mechanical means in order to avoid imperfections being obscured;b) there are no tool impressions or blow marks;c) when weld dressing is required, overheating of the joint due to grinding is avoided and that grinding marks and an uneven finish are also avoided;d) for fillet welds and butt w
47、elds to be dressed flush, the joint merges smoothly with the parent metal without under flushing.If imperfections (caused by dressing or otherwise) are observed, they shall be reported so that remedial action can be taken.6.4.3 Profile and dimensionsThe weld shall be examined to check the following:
48、a) the profile of the weld face and the height of any excess weld metal meet the requirements of the acceptance criteria (see 6.4.1);b) the surface of the weld is regular: the pattern and the pitch of weave marks present an even and satisfactory visual appearance; the distance between the last layer and the parent metal or the position of runs has been measured where required by the WPS;c) the weld width is consistent over the whole of
