1、December 2013 Translation by DIN-Sprachendienst.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).I
2、CS 25.160.40!%*YF“2075435www.din.deDDIN EN ISO 17639Destructive tests on welds in metallic materials Macroscopic and microscopic examination of welds (ISO 17639:2003);English version EN ISO 17639:2013,English translation of DIN EN ISO 17639:2013-12Zerstrende Prfung von Schweiverbindungen an metallis
3、chen Werkstoffen Makroskopische und mikroskopische Untersuchungen von Schweinhten(ISO 17639:2003);Englische Fassung EN ISO 17639:2013,Englische bersetzung von DIN EN ISO 17639:2013-12Essais destructifs des soudures sur matriaux mtalliques Examens macroscopique et microscopique des assemblages souds
4、(ISO 17639:2003);Version anglaise EN ISO 17639:2013,Traduction anglaise de DIN EN ISO 17639:2013-12SupersedesDIN EN 1321:1996-12www.beuth.deDocument comprises 16 pagesIn case of doubt, the German-language original shall be considered authoritative.11.13 DIN EN ISO 17639:2013-12 2 A comma is used as
5、the decimal marker. National foreword This document (ISO 17639:2003) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes”, Subcommittee SC 5 “Testing and inspection of welds” (Secretariat: AFNOR, France) and has been adopted without alteration as European Standard EN ISO
6、 17639:2013 by Technical Committee CEN/TC 121 “Welding and allied processes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Schweien und verwandte Verfahren (Welding and Allied Processes Standards Committee), Joint Committee NA 092-00-05
7、GA NAS/NMP: Zerstrende Prfung von Schweiverbindungen (DVS AG Q 4). The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 6520-1 DIN EN ISO 6520-1 ISO 9956-3*)DIN EN ISO 15614-1 ISO 9956-4*)DIN EN ISO 15614-2 ISO/TR 15608 DIN-Fachbericht CEN I
8、SO/TR 15608 ISO/TR 16060 DIN V 1739 Amendments This standard differs from DIN EN 1321:1996-12 as follows: a) Clause 2 “Normative references” has been updated; b) the former Clause 5 is now Clause 4 “Abbreviations” and the former Clause 4 is now Clause 5 “Principle”. Previous editions DIN EN 1321: 19
9、96-12 *)The ISO Standard has been withdrawn. A similar EN ISO Standard has been published. DIN EN ISO 17639:2013-12 3 National Annex NA (informative) Bibliography DIN EN ISO 6520-1, Welding and allied processes Classification of geometric imperfections in metallic materials Part 1: Fusion welding DI
10、N EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials Welding procedure test Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys DIN EN ISO 15614-2, Specification and qualification of welding procedures for metallic materials Wel
11、ding procedure test Part 2: Arc welding of aluminium and its alloys DIN Fachbericht CEN ISO/TR 15608, Welding Guidelines for a metallic materials grouping system DIN V 1739, Destructive tests on welds in metallic materials Etchants for macroscopic and microscopic examination DIN EN ISO 17639:2013-12
12、 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17639 August 2013 ICS 25.160.40 Supersedes EN 1321:1996English Version Destructive tests on welds in metallic materials - Macroscopic and microscopic examination of welds (ISO 17639:2003) Essais destructifs
13、des soudures sur matriaux mtalliques -Examens macroscopique et microscopique des assemblages souds (ISO 17639:2003) Zerstrende Prfung von Schweiverbindungen an metallischen Werkstoffen - Makroskopische und mikroskopische Untersuchungen von Schweinhten (ISO 17639:2003) This European Standard was appr
14、oved by CEN on 8 August 2013. 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
15、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 a
16、nd 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hung
17、ary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Manageme
18、nt Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17639:2013: EContents Page Foreword. 3 1 Scope 4 2 Normative references . 4 3 Terms and definitions. 4 4 Abbreviations 5 5 Princi
19、ple . 5 6 Purpose of the test 5 7 Removal of test specimens 5 8 Test procedure 7 8.1 General. 7 8.2 Test specimen preparation 7 8.3 Surface finish 7 8.4 Etching methods . 7 8.5 Etchants . 8 8.6 Safety measures 8 9 Examination. 8 10 Designation 8 11 Test report 11 Annex A (informative) Example of a t
20、est report 12 DIN EN ISO 17639:2013-12 EN ISO 17639:2013 (E) 2 Foreword The text of ISO 17639:2003 has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 17639:2013 by Technical C
21、ommittee CEN/TC 121 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 February 2014, and conflicting national standards shall be withdrawn at the latest by F
22、ebruary 2014. 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. This document supersedes EN 1321:1996. According to the CEN-CENELEC Inte
23、rnal 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, I
24、reland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17639:2003 has been approved by CEN as EN ISO 17639:2013 without any modification. DI
25、N EN ISO 17639:2013-12 EN ISO 17639:2013 (E) 3“Welding and allied processes”1 Scope This International Standard gives recommendations for specimen preparation, test procedures and their main objectives for macroscopic and microscopic examination. 2 Normative references The following referenced docum
26、ents 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) applies. ISO 6520-1, Welding and allied processes Classification of geometric imperfecti
27、ons in metallic materials Part 1: Fusion welding ISO 9956-3, Specification and approval of welding procedures for metallic materials Part 3: Welding procedure tests for arc welding of steels ISO 9956-4, Specification and approval of welding procedures for metallic materials Part 4: Welding procedure
28、 tests for the arc welding of aluminium and its alloys ISO/TR 15608, Welding Guidelines for a metallic materials grouping system ISO/TR 16060, Destructive tests on welds in metallic materials Etchants for macroscopic and microscopic examination 3 Terms and definitions For the purposes of this docume
29、nt, the following terms and definitions apply. 3.1 macroscopic examination examination of a test specimen by the naked eye, or under low magnification (generally less than 50), with or without etching 3.2 microscopic examination examination of a test specimen by microscope with a magnification of ge
30、nerally 50 to 500, with or without etching 3.3 operator person who performs the macroscopic and/or microscopic examination DIN EN ISO 17639:2013-12 EN ISO 17639:2013 (E) 4 4 Abbreviations For the purposes of this document, the following abbreviations apply. A Macroscopic examination I Microscopic ex
31、amination E Etched U Unetched Abbreviations for parent metals shall be in accordance with the grouping systems in ISO 9956-3 for steels and ISO 9956-4 for aluminium and its alloys. Grouping systems for other materials are given in ISO/TR 15608. The same grouping systems shall also be used for weld m
32、etal. The abbreviations for etchants should be taken from ISO/TR 16060 whenever applicable. NOTE A trade mark can be used if ISO/TR 16060 is not applicable. 5 Principle Macroscopic and microscopic examination is used to reveal the macroscopic or microscopic features of a welded joint, usually by the
33、 examination of transverse sections. This is done by visual and/or optical examination of the prepared surface, before or after etching. 6 Purpose of the test The purpose of macroscopic and microscopic examinations is to assess the structure (including grain structure, morphology and orientation, pr
34、ecipitates and inclusions) independently and/or in relation to various cracks and cavities. Sections can also provide a record of sample shape in the planes of the section. Table 1 gives guidance on the assessment of features which can be detected by macroscopic and microscopic examination. 7 Remova
35、l of test specimens Test specimens are generally oriented perpendicular to the weld axis (transverse section), including the weld deposit and heat affected zones on both sides of the weld. However, test specimens may also apply to other orientations. The location, orientation and number of test piec
36、es should be specified prior to testing, for example by reference to an application standard. DIN EN ISO 17639:2013-12 EN ISO 17639:2013 (E) 5 Table 1 Guidelines for assessment of features by microscopic and macroscopic examination Features Defect in accordance with ISO 6520-1 Macro examination with
37、out etchingMacro examination with etching Micro examination without etching Micro examination with etching 1 Hot cracks 100 X X X X 2 Cold cracks 100 X X X X3 Lamellar tearing 100 X X X X 4 Cavities 200 X X X X5 Inclusions 300 X X X X 6 Lack of fusion/penetration 400 X X X X7 Geometrical shape 500 X
38、 X 8 Heat affected zone X X 9 Runs and layers X (X) 10 Grain boundary (X) X 11 Grain structure X12 Solidification structure X X 13 Joint preparation (X) X X X 14 Direction of rolling/extrusion X X15 Direction of fibre structure (grains) X X 16 Segregation X X 17 Precipitation X18 Repair and non-conf
39、ormance (X) X (X) X 19 Mechanical/thermal effects X X X means features revealed; (X) means features may or may not be revealed NOTE A number of the features listed may be beyond the resolution of an optical microscope, e.g. precipitates and inclusions. DIN EN ISO 17639:2013-12 EN ISO 17639:2013 (E)
40、6 8 Test procedure 8.1 General The following information shall be given: parent metals and welding consumables; object of the test; composition/name of the etchant; surface finish (see 8.3); etching methods (see 8.4); etching time; additional measures (see 8.6); any additional requirements. 8.2 Test
41、 specimen preparation The test specimen shall be prepared for examination by cutting, mounting, grinding and/or polishing and/or etching as appropriate (see ISO/TR 16060). The surface to be examined shall not be adversely influenced by these processes. 8.3 Surface finish The requirement for surface
42、finish depends on aspects such as type of examination (macroscopic or microscopic); type of material; documentation (such as photographs). NOTE Details of the grinding and polishing media and methods of grinding and polishing are given in ISO/TR 16060. 8.4 Etching methods The method of etching shall
43、 be specified prior to etching. The most common methods are etching by immersing the test specimen in the etchant; etching by swabbing the surface of the test specimen; electrolytic etching. Other methods may be used but should be specified, e.g. by reference to an application standard. When etching
44、 is completed, the test specimen should be washed and dried. DIN EN ISO 17639:2013-12 EN ISO 17639:2013 (E) 7 8.5 Etchants Typical etchants for various parent metals, weld deposits, purposes and types of examination are given in ISO/TR 16060. Depending on the information required, the type and conce
45、ntration of the etchant as well as the etching temperature and time may be varied according to the material and type of examination. For similar joints, different etchants may be used. 8.6 Safety measures The following safety measures shall be observed: wear eye or face protection, as appropriate; h
46、andle etchants with suitable gloves or tongs; mixtures shall be made in a fume cupboard or under a fume hood; always pour acid into water and not vice versa; always pour solute into solvent; i.e. the smaller quantity (solute) into the larger quantity (solvent). 9 Examination The prepared surface may be examined before and/or after etching, as appropriate, or in accordance with the relevant standards and/or specifications. 10 Designation The examination shall be designated as follows: reference to this International Standard; type of examination (macroscopic or microscopic examination)
