DIN EN ISO 23277-2015 Non-destructive testing of welds - Penetrant testing - Acceptance levels (ISO 23277 2015) German version EN ISO 23277 2015《焊缝的无损检验 穿透试验 验收等级(ISO 23277-2015) 德.pdf

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1、June 2015Translation by DIN-Sprachendienst.English price group 8No 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.

2、160.40!%CRK“2324740www.din.deDDIN EN ISO 23277Non-destructive testing of welds Penetrant testing Acceptance levels (ISO 23277:2015);English version EN ISO 23277:2015,English translation of DIN EN ISO 23277:2015-06Zerstrungsfreie Prfung von Schweiverbindungen Eindringprfung von Schweiverbindungen Zul

3、ssigkeitsgrenzen (ISO 23277:2015);Englische Fassung EN ISO 23277:2015,Englische bersetzung von DIN EN ISO 23277:2015-06Contrle non destructif des assemblages souds Contrle par ressuage Niveaux dacceptation (ISO 23277:2015);Version anglaise EN ISO 23277:2015,Traduction anglaise de DIN EN ISO 23277:20

4、15-06SupersedesDIN EN ISO 23277:2010-03www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 11 pages05.15 DIN EN ISO 23277:2015-06 2 A comma is used as the decimal marker. National foreword This document (EN ISO 23277:2015) has been prepared

5、 by Technical 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 the DIN-Normenausschuss Materialprfung (DIN Standards Committe

6、e Materials Testing). The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 3452-1 DIN EN ISO 3452-1 ISO 3452-2 DIN EN ISO 3452-2 ISO 5817 DIN EN ISO 5817 ISO 10042 DIN EN ISO 10042 ISO 12706 DIN EN ISO 12706 ISO 17635 DIN EN ISO 17635 Amendm

7、ents This standard differs from DIN EN ISO 23277:2010-03 as follows: a) normative references have been updated; b) Subclause 5.1 has been extended to include a further requirement concerning linear indications and a NOTE; c) the former Subclause 5.3 “Grouped indications” has been deleted; d) the sta

8、ndard has been editorially revised. Previous editions DIN EN 1289: 1998-03, 2002-09 DIN EN ISO 23277: 2010-03 DIN EN ISO 23277:2015-06 3 National Annex NA (informative) Bibliography DIN EN ISO 3452-1, Non-destructive testing Penetrant testing Part 1: General principles DIN EN ISO 3452-2, Non-destruc

9、tive testing Penetrant testing Part 2: Testing of penetrant materials 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 10042, Welding Arc-welded joints in aluminium and its alloys Quality lev

10、els for imperfections DIN EN ISO 12706, Non-destructive testing Penetrant testing Vocabulary; Trilingual version DIN EN ISO 17635, Non-destructive testing of welds General rules for metallic materials DIN EN ISO 23277:2015-06 4 This page is intentionally blank EN ISO 23277 March 2015 ICS 25.160.40 S

11、upersedes EN ISO 23277:2009English Version Non-destructive testing of welds - Penetrant testing - Acceptance levels (ISO 23277:2015) Contrle non destructif des assemblages souds - Contrle par ressuage - Niveaux dacceptation (ISO 23277:2015) Zerstrungsfreie Prfung von Schweiverbindungen - Eindringprf

12、ung von Schweiverbindungen - Zulssigkeitsgrenzen (ISO 23277:2015) This European Standard was approved by CEN on 29 November 2014. 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 standa

13、rd 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

14、 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 Repub

15、lic, 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, Switzerland, Turkey andUnited Kingdom. CEN-CENELE

16、C Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 23277:2015 EEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMA

17、LISATIONEUROPISCHES KOMITEE FR NORMUNG2DIN EN ISO 23277:2015-06 EN ISO 23277:2015 (E) Contents Page Foreword . 3 1 Scope . 4 2 Normative references. 4 3 Terms and definitions 4 4 Testing parameters 5 4.1 General 5 4.2 Sensitivity . 5 4.3 Surface condition . 5 4.4 Process and technique 5 5 Acceptance

18、 levels 5 5.1 General 5 5.2 Evaluation of indications . 6 5.3 Removal of imperfections . 6 Annex A (informative) Recommended testing parameters 7 Foreword This document (EN ISO 23277:2015) has been prepared by Technical Committee ISO/TC 44 Welding and allied processes in collaboration with Technical

19、 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 September 2015, and conflicting national standards shall be withdrawn at th

20、e latest by September 2015. 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 ISO 23277:2009. According to t

21、he 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

22、Hungary, Iceland, Ireland, 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 23277:2015 has been approved by CEN as EN ISO 23277:2015 without a

23、ny modification. “”3DIN EN ISO 23277:2015-06EN ISO 23277:2015 (E)1 ScopeThis International Standard specifies acceptance levels for indications from surface breaking imperfections in metallic welds detected by penetrant testing.The acceptance levels are primarily intended for use during manufacture

24、examination, but where appropriate, they can be used for in-service inspection.The acceptance levels in this International Standard are based on detection capabilities that can be expected when using techniques specified in ISO 3452 series and parameters recommended in Annex A. The acceptance levels

25、 can be related to welding standards, application standards, specifications, or codes. Such a relationship is shown in ISO 17635 for ISO 5817 and ISO 10042.Acceptance levels for grouped indications are not covered by this International Standard.2 Normative referencesThe following documents, in whole

26、 or in part, are normatively referenced in this document and are indispensable for 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 3452-1, Non-destructive testing Penet

27、rant testing Part 1: General principlesISO 3452-2, Non-destructive testing Penetrant testing Part 2: Testing of penetrant materialsISO 5817, Welding Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) Quality levels for imperfectionsISO 10042, Welding Arc-welded

28、joints in aluminium and its alloys Quality levels for imperfectionsISO 12706, Non-destructive testing Penetrant testing VocabularyISO 17635, Non-destructive testing of welds General rules for metallic materialsISO/TS 18173, Non-destructive testing General terms and definitions3 Terms and definitions

29、For the purposes of this document, the terms and definitions given in ISO/TS 18173, ISO 12706, and the following apply.3.1linear indicationindication having a length greater than three times its width3.2non-linear indicationindication having a length less than or equal to three times its width4DIN E

30、N ISO 23277:2015-06 EN ISO 23277:2015 (E) 4 Testing parameters4.1 GeneralMany parameters, either individually or in combination, will affect the shape and size of a penetrant indication produced by a weld imperfection.The following items are significant factors that will affect the shape and size of

31、 indications.4.2 SensitivityPenetrant materials are classified in accordance with ISO 3452-2, including a sensitivity level which relates to the ability to detect small imperfections. Generally, higher sensitivity materials should be used for the detection of small imperfections.4.3 Surface conditio

32、nSurface condition is directly related to the minimum detectable imperfection size. Best results are normally achieved when inspecting smooth surfaces. Surface roughness or irregularities (e.g. undercut, spatter) can cause high background and non-relevant indications resulting in a low probability o

33、f detection for small imperfections.4.4 Process and techniquePenetrant systems and techniques should be selected according to the test surface condition. In some cases, the choice will have a direct effect on the limits of reliable detection, for example, the removal of excess penetrant by swab clea

34、ning on rough surfaces is not recommended when seeking small imperfections.Guidance on these matters is given in Annex A and in ISO 3452-1.5 Acceptance levels5.1 GeneralThe width of the test surface shall include the weld metal and the adjacent parent metal up to a distance of 10 mm on each side.Ind

35、ications produced by penetrant testing do not usually display the same size and shape characteristics as the imperfection causing that indication. For the purposes of this International Standard, it is the size of the indication which should be assessed against the values shown in Table 1.Indication

36、s that are approximately in line, which are separated by less than the length of the smaller indication, shall be considered as a single, continuous indication.Acceptance levels prescribed for linear indications are those corresponding to the evaluation level. Indications lower than this shall not b

37、e taken into account. Normally, acceptable indications shall not be recorded.Local grinding can be used to improve the classification of all or part of a test surface when it is required to work to a higher detection limit than that recommended by the existing weld surface condition in Table A.1.NOT

38、E Local grinding is a very often used practice.Acceptance levels for welds in metallic materials are given in Table 1.5DIN EN ISO 23277:2015-06EN ISO 23277:2015 (E)Table 1 Acceptance levels for indicationsDimensions in millimetresType of indicationAcceptance levela1 2 3Linear indicationl = length of

39、 indicationl 2 l 4 l 8Nonlinear indicationd = major axis dimensiond 4 d 6 d 8aAcceptance levels 2 and 3 can be specified with a suffix, “X”, which denotes that all linear indications detected shall be evaluated to level 1. However, the probability of detection of indications smaller than those denot

40、ed by the original acceptance level can be low.5.2 Evaluation of indicationsInitial evaluation shall be carried out as described in ISO 3452-1 and final evaluation of indication size shall be carried out after a designated minimum development time has elapsed, and before the indication has degenerat

41、ed, such that it no longer represents the causing imperfection.5.3 Removal of imperfectionsWhere the product specification permits, local grinding can be used to reduce or remove imperfections which are the cause of unacceptable indications. All such areas shall be re-tested and evaluated with the s

42、ame penetrant system and technique.6DIN EN ISO 23277:2015-06 EN ISO 23277:2015 (E) Annex A (informative) Recommended testing parametersThe recommended parameters for reliable detection of small imperfections are given in Table A.1.Table A.1 Recommended testing parametersAcceptance level Surface cond

43、ition Type of penetrant system1 Fine surfaceaFluorescent penetrant system, normal sensitivity or higher to ISO 3452-2. Col-our contrast penetrant, high sensitivity to ISO 3452-22 Smooth surfacebAny3 General surfacecAnyaThe weld cap and parent material offer smooth clean surfaces with negligible unde

44、rcut, rippling, and spatter. The surface finish is typical of welds made by automatic TIG-welding, submerged arc welding (fully mechanized), and manual metal arc welding process using iron powder electrodes.bThe weld cap and parent material offer reasonably smooth surfaces with minimal undercut, rip

45、pling, and spatter. The surface finish is typical of welds made by manual metal arc welding vertical downwards and MAG welding using argon rich gas for the capping runs.cThe weld cap and parent material are in the as-welded condition. The surface finish is typical of welds produced by the manual metal arc and MAG welding processes in any position.7DIN EN ISO 23277:2015-06EN ISO 23277:2015 (E)

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