1、October 2013 Translation by DIN-Sprachendienst.English price group 15No 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).IC
2、S 25.160.40!%)h“2066927www.din.deDDIN EN ISO 12932Welding Laser-arc hybrid welding of steels, nickel and nickel alloys Quality levels for imperfections (ISO 12932:2013);English version EN ISO 12932:2013,English translation of DIN EN ISO 12932:2013-10Schweien Laserstrahl-Lichtbogen-Hybridschweien von
3、 Sthlen, Nickel und Nickellegierungen Bewertungsgruppen fr Unregelmigkeiten (ISO 12932:2013);Englische Fassung EN ISO 12932:2013,Englische bersetzung von DIN EN ISO 12932:2013-10Soudage Soudage hybride laser-arc des aciers, du nickel et des alliages de nickel Niveaux de qualit par rapport aux dfauts
4、 (ISO 12932:2013);Version anglaise EN ISO 12932:2013,Traduction anglaise de DIN EN ISO 12932:2013-10www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 31 pages10.13 DIN EN ISO 12932:2013-10 2 A comma is used as the decimal marker. National
5、 foreword This document (EN ISO 12932:2013) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes”, Subcommittee SC 10 “Unification of requirements in the field of metal welding” in collaboration with Technical Committee CEN/TC 121 “Welding” (both secretariats are held by
6、DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Schweien und verwandte Verfahren (Welding and Allied Processes Standards Committee), DIN/DVS Joint Committee NA 092-00-21 AA Laserstrahlschweien und verwandte Verfahren (DVS AG V 9.2). The DIN Standards co
7、rresponding to the International Standards referred to in this document are as follows: ISO 2553 DIN EN 22553 ISO 5817:2003 DIN EN ISO 5817:2006-10 ISO 6520-1 DIN EN ISO 6520-1 ISO 4063 DIN EN ISO 4063 ISO 13919-1 DIN EN ISO 13919-1 ISO 17635 DIN EN ISO 17635 National Annex NA (informative) Bibliogr
8、aphy DIN EN 22553, Welded, brazed and soldered joints Symbolic representation on drawings DIN EN ISO 4063, Welding and allied processes Nomenclature of processes and reference numbers DIN EN ISO 5817:2006-10, Welding Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excl
9、uded) Quality levels for imperfections DIN EN ISO 6520-1, Welding and allied processes Classification of geometric imperfections in metallic materials Part 1: Fusion welding DIN EN ISO 13919-1, Welding Electrons and laser beam welded joints Guidance on quality levels for imperfections Part 1: Steel
10、DIN EN ISO 17635, Non-destructive testing of welds General rules for metallic materials EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12932 June 2013 ICS 25.160.40 English Version Welding - Laser-arc hybrid welding of steels, nickel and nickel alloys - Quality levels for imperfections (IS
11、O 12932:2013) Soudage - Soudage hybride laser-arc des aciers, du nickel et des alliages de nickel - Niveaux de qualit par rapport aux dfauts (ISO 12932:2013) Schweien - Laserstrahl-Lichtbogen-Hybridschweien von Sthlen, Nickel und Nickellegierungen - Bewertungsgruppen fr Unregelmigkeiten This Europea
12、n Standard was approved by CEN on 1 March 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 concern
13、ing 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
14、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, Former Yugoslav Republic of Macedonia, France, Ger
15、many, 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 STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE F
16、R NORMUNG Management 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 12932:2013: E(ISO 12932:2013) Contents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references. 5
17、 3 Terms and definitions 5 4 Symbols 7 5 Assessment of imperfections . 8 Annex A (informative) Examples of determination of percentage (%) porosity 26 Annex B (informative) Additional information and guidelines for use of this International Standard . 28 Bibliography 29 2DIN EN ISO 12932:2013-10EN I
18、SO 12932:2013 (E) This document (EN ISO 12932:2013) 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 s
19、tatus of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2013, and conflicting national standards shall be withdrawn at the latest by December 2013. Attention is drawn to the possibility that some of the elements of this document may be th
20、e subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgi
21、um, 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, Sweden, Switzer
22、land, Turkey and the United Kingdom. Endorsement notice The text of ISO 12932:2013 has been approved by CEN as EN ISO 12932:2013 without any modification. Foreword“”3DIN EN ISO 12932:2013-10EN ISO 12932:2013 (E)IntroductionThis International Standard is intended to be used as a reference in drafting
23、 application codes and/or other application standards. It contains a simplified selection of laser-arc hybrid welding imperfections based on the designations given in ISO 6520-1.Some imperfections described in ISO 6520-1 have been used directly and some have been grouped together. The basic numerica
24、l referencing system from ISO 6520-1 has been used.The purpose of this International Standard is to define the dimensions of typical imperfections which can be expected in normal fabrication. It can be used within a quality system for the production of welded joints. It provides three sets of dimens
25、ional values from which a selection can be made for a particular application. The quality level necessary in each case is defined by the application standard or the responsible designer in conjunction with the manufacturer, user and/or other parties concerned. The quality level is expected to be pre
26、scribed prior to the start of production, preferably at the enquiry or order stage. For special purposes, additional details can be prescribed.The quality levels given in this International Standard provide basic reference data and are not specifically related to any particular application. They ref
27、er to the types of welded joint in fabrication and not to the complete product or component itself. It is possible, therefore, that different quality levels are applied to individual welded joints in the same product or component.It would normally be expected that for a particular welded joint the d
28、imensional limits for imperfections can all be covered by specifying one quality level. In some cases, it can be necessary to specify different quality levels for different imperfections in the same welded joint.The choice of quality level for any application is expected to take account of design co
29、nsiderations, subsequent processing (e.g. surfacing), mode of stressing (e.g. static, dynamic), service conditions (e.g. temperature, environment) and consequences of failure. Economic factors are also important and are intended to include not only the cost of welding, but also of inspection, test a
30、nd repair.Although this International Standard includes types of imperfection relevant to the laser-arc hybrid welding processes given in Clause 1, only those which are applicable to the process and application in question need to be considered.Imperfections are quoted in terms of their actual dimen
31、sions, and their detection and evaluation may require the use of one or more methods of non-destructive testing. The detection and sizing of imperfections are dependent on the inspection methods and the extent of testing specified in the application standard or contract.This International Standard d
32、oes not address the methods used for the detection of imperfections. However, ISO 17635 contains a correlation between the quality level and acceptance level for different NDT methods.This International Standard is directly applicable to visual examination of welds and does not include details of re
33、commended methods of detection or sizing by other non-destructive means. There are difficulties in using these limits to establish appropriate criteria applicable to non-destructive testing methods, such as ultrasonic, radiographic and penetrant testing, and they can need to be supplemented by requi
34、rements for inspection, examination and testing.The values given for imperfections are for welds produced using normal welding practice. More stringent requirements as stated in quality level B can include additional manufacturing processes, e.g. grinding, TIG dressing.4DIN EN ISO 12932:2013-10EN IS
35、O 12932:2013 (E) 1 ScopeThis International Standard specifies quality levels of imperfections in laser-arc hybrid welded joints for all types of steel, nickel and its alloys. It applies to material thickness 0,5 mm.Three quality levels are given in order to permit application for a wide range of wel
36、ded fabrication. They are designated by B, C and D. Quality level B corresponds to the highest requirement on the finished weld. The quality levels refer to production quality and not to the fitness-for-purpose (see 3.3) of the product manufactured.2 Normative referencesThe following documents, in w
37、hole 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.ISO 2553, Welding and allied processes
38、 Symbolic representation on drawings Welded, brazed and soldered jointsISO 5817:2003, Welding Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) Quality levels for imperfectionsISO 6520-1, Welding and allied processes Classification of geometric imperfections in
39、 metallic materials Part 1: Fusion welding3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1hybrid weldingwelding in which two or more welding processes are used simultaneously in the same weld poolNote 1 to entry: Hybrid welding differs from comb
40、inations of processes where at least two melt pools exist which are completely separated by a solid component in the solidification phases. Examples of a combined process (a) and a laser-arc hybrid welding process (b) are given in Figure 1 by using a laser beam and the additional energy source of an
41、 arc.5DIN EN ISO 12932:2013-10EN ISO 12932:2013 (E)a) Combined process b) Hybrid processKey1 laser beam2 torchFigure 1 Combination of welding processes3.2quality leveldescription of the quality of a weld on the basis of type, size and amount of selected imperfectionsSOURCE: ISO 5817:2003, 3.13.3fitn
42、ess-for-purposeability of a product, process or service to serve a defined purpose under specific conditionsSOURCE: ISO 5817:2003, 3.23.4short imperfectionimperfection for which, in the 100 mm which contains the greatest number of imperfections, the total length of the imperfections is not greater t
43、han 25 mmSOURCE: ISO 5817:2003, 3.3, modified.3.5short imperfectionimperfection in which the total length of the imperfections is not greater than 25 % of the length of the weldSOURCE: ISO 5817:2003, 3.3, modified.3.6systematic imperfectionimperfection that is repeatedly distributed in the weld over
44、 the weld length to be examined, the size of the single imperfection being within the specified limitsSOURCE: ISO 5817:2003, 3.4, modified.6DIN EN ISO 12932:2013-10EN ISO 12932:2013 (E) 3.7projected areaarea where imperfections distributed along the volume of the weld under consideration are imaged
45、two-dimensionallyNote 1 to entry: In contrast to the cross-sectional area, the occurrence of imperfections is dependent on the weld thickness when exposed radiographically (see Figure 2).SOURCE: ISO 5817:2003, 3.5, modified “ Figure 1” has been replaced by “Figure 2”.Key1 direction of X-rays2 four p
46、ores per volume unit3 six-fold thickness4 three-fold thickness5 two-fold thickness6 one-fold thicknessFigure 2 Radiographic films of specimens with identical occurrence of pores per volume unit3.8cross-sectional areaarea to be considered after fracture or sectioningSOURCE: ISO 5817:2003, 3.6.4 Symbo
47、lsFor the purposes of this document, the following symbols apply.a nominal throat thickness of the fillet weld (given in ISO 2553)A area surrounded by poresb width of weld reinforcementd diameter of poredAdiameter of pore within area surrounded by poresh height or width of imperfection7DIN EN ISO 12
48、932:2013-10EN ISO 12932:2013 (E)l length of imperfection in longitudinal direction of the weldlplength of projected or fracture surface areas connected cross-section or nominal butt weld thickness (given in ISO 2553)t wall or plate thickness (nominal size)wpwidth of the weld or width or height in ca
49、se of fracture areaz leg length of a fillet weld (given in ISO 2553) angle of weld toe angle of angular misalignment5 Assessment of imperfectionsLimits to imperfections are given in Table 1. These limits apply to the finished weld and may also be applied to an intermediate stage of fabrication.If a method other than macro examination is used for the detection of imperfections, only those imperfections which can be detected
