DIN EN ISO 9934-1-2017 Non-destructive testing - Magnetic particle testing - Part 1 General principles (ISO 9934-1 2016) German version EN ISO 9934-1 2016《无损检验 磁性粒子检验 第1部分 一般原则(ISO.pdf

1、March 2017 English price group 13No 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 19.100!%c+3“2640816www.din.deDIN E

2、N ISO 9934-1Nondestructive testing Magnetic particle testing Part 1: General principles (ISO 99341:2016);English version EN ISO 99341:2016,English translation of DIN EN ISO 9934-1:2017-03Zerstrungsfreie Prfung Magnetpulverprfung Teil 1: Allgemeine Grundlagen (ISO 99341:2016);Englische Fassung EN ISO

3、 99341:2016,Englische bersetzung von DIN EN ISO 9934-1:2017-03Essais non destructifs Magntoscopie Partie 1: Principes gnraux du contrle (ISO 99341:2016);Version anglaise EN ISO 99341:2016,Traduction anglaise de DIN EN ISO 9934-1:2017-03SupersedesDIN EN ISO 99341:201512www.beuth.deDocumentcomprises25

4、 pages DTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.03.17 DIN EN ISO 9934-1:2017-03 2 A comma is used as the decimal marker. National foreword This document (EN ISO 9934-1:2016) has been prepared by Technical Committee ISO/TC 135

5、 “Non-destructive testing” in collaboration with Technical Committee CEN/TC 138 “Non-destructive testing” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062

6、-08-24 AA Electrical and magnetic test methods. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 3059 DIN EN ISO 3059 ISO 9712 DIN EN ISO 9712 ISO 9934-2 DIN EN ISO 9934-2 ISO 9934-3 DIN EN ISO 9934-3 ISO 12707 DIN EN ISO 12707 Amendment

7、s This standard differs from DIN EN ISO 9934-1:2015-12 as follows: a) Clause 13 “Demagnetization” has been corrected; b) Annex NB “Explanatory notes on Clause 8 and Table 1” has been included in the national foreword. Previous editions DIN EN ISO 9934-1: 2002-03, 2015-12 DIN EN ISO 9934-1:2017-03 3

8、National Annex NA (informative) Bibliography DIN EN ISO 3059, Non-destructive testing Penetrant testing and magnetic particle testing Viewing conditions DIN EN ISO 9712, Non-destructive testing Qualification and certification of NDT personnel DIN EN ISO 9934-2, Non-destructive testing Magnetic parti

9、cle testing Part 2: Detection media DIN EN ISO 9934-3, Non-destructive testing Magnetic particle testing Part 3: Equipment DIN EN ISO 12707, Non-destructive testing Magnetic particle testing Vocabulary DIN EN ISO 9934-1:2017-03 4 National Annex NB (informative) Explanatory notes on Clause 8 and Tabl

10、e 1 NB.1 General Compared with the previous edition, major changes have been made. This national annex describes the basics of magnetic particle testing. The delegates could not agree on all aspects, with the result that Clause 8 is difficult to understand. In the following, the wording is rendered

11、more precise. NB.2 Required tangential field strength It is generally accepted that a magnetic flux density of 1 T (Tesla) is required in the component in order to conduct magnetic particle testing. In order to produce this magnetic flux density, an external magnetic field measured in A/m needs to b

12、e produced (tangential field strength). The combination of the magnetic flux density that has been produced in the component and the tangential field strength produced externally describes the relative permeability depending on the substance. The required value for the tangential field strength is d

13、ifficult to describe in a specific case as the described influencing factors need to be considered. The indicated value of 2 kA/m describes the lower limit. Particularly Note 1 needs to be taken into account. NB.3 Time varying currents Both DC and AC are applied for the purposes of magnetic particle

14、 testing. While AC is adequately described by an invariable, for describing DC, the parameters RMS value, peak value and the curve form need to be considered in addition to the periodic length and frequency. In the previous edition of the standard, the RMS value had been considered as sufficient and

15、 practice-oriented. In this revised edition of the standard, the peak value is described, too. In order to continue to guarantee reproducible testing, when applying the peak value it is required to describe the curve form of the current in more detail. For this purpose, the so-called crest factor is

16、 suitable as a practicable value. It describes the relationship of the peak value and the RMS value of a periodic measurand. Measured peak values shall only be compared if the measurands have a roughly similar crest factor. Instruments measuring the mean rectified value and whose displays are calibr

17、ated to show sinus RMS values (moving coil instruments) are only permitted for sinusoidal currents. NB.4 Determining discontinuinities in any direction For testing partial masses in any direction, so-called combined testing is conducted to determine discontinuities. It is specified that only sinusoi

18、dal currents should be used for this testing. To adapt the intensities, phase angle control can be applied if the phase angle does not exceed 90. This equals a crest factor of 2. However, in phase angle control, it needs to be considered that the angular range of the resulting magnetic field is redu

19、ced by the phase angle (see Lissajous curve). NB.5 Table A.1: Relationship between peak, mean and RMS values for various sinusoidal wave forms This table has been transferred to the informative annex as it only contains basic knowledge of electrical engineering. EUROPEAN STANDARD NORME EUROPENNE EUR

20、OPISCHE NORM EN ISO 9934-1 December 2016 ICS 19.100 Supersedes EN ISO 9934-1:2015English Version Non-destructive testing - Magnetic particle testing - Part 1: General principles (ISO 9934-1:2016) Essais non destructifs - Magntoscopie - Partie 1: Principes gnraux du contrle (ISO 9934-1:2016) Zerstrun

21、gsfreie Prfung - Magnetpulverprfung -Teil 1: Allgemeine Grundlagen (ISO 9934-1:2016) This European Standard was approved by CEN on 21 October 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of

22、 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)

23、. 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, C

24、yprus, 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, Switzerland, Turkey andUnited K

25、ingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 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

26、9934-1:2016 EEuropean foreword .31 Scope . 52 Normative references 53 Terms and definitions . 54 Qualification and certification of personnel . 65 Safety and environment 66 Testing procedure . 67 Surface preparation 68 Magnetization 68.1 General requirements . 68.2 Verification of magnetization . 78

27、.3 Magnetizing techniques 88.3.1 General 88.3.2 Current flow techniques 88.3.3 Magnetic flow techniques . 109 Detection media .149.1 Properties and selection of media . 149.2 Testing of detection media . 149.3 Application of detection media 1410 Viewing conditions 1411 Overall performance test 1412

28、Interpretation and recording of indications 1513 Demagnetization .1514 Cleaning 1515 Test report 16Annex A (informative) Example for determination of currents required to achieve specified tangential field strengths for various magnetization techniques 17Bibliography .21Contents PageDIN EN ISO 9934-

29、1:2017-03 EN ISO 9934-1:2016 (E) 2Foreword .4European foreword This document (EN ISO 9934-1:2016) has been prepared by Technical Committee ISO/TC 135 “Non-destructive testing“ in collaboration with Technical Committee CEN/TC 138 “Non-destructive testing” the secretariat of which is held by AFNOR. Th

30、is 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 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 el

31、ements 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 9934-1:2015. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the fol

32、lowing 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, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,

33、 Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 9934-1:2016 has been approved by CEN as EN ISO 9934-1:2016 without any modification. DIN EN ISO 9934-1:2017-03 EN ISO 9934-1:2016 (E)3 ForewordISO (th

34、e 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 committ

35、ee 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 electrotechn

36、ical standardization.The procedures used to develop this document 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 i

37、n accordance with the editorial rules of the ISO/IEC Directives, Part 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.

38、Details of any patent rights identified during the development of 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 a

39、n endorsement.For an explanation on the meaning of ISO specific terms 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/forewor

40、d.html.The committee responsible for this document is ISO/TC 135, Non-destructive testing, Subcommittee SC 2, Surface methods.This third edition cancels and replaces the second edition (ISO 9934-1:2015), of which it constitutes a minor revision, with the modification for clarity of Clause 13 and oth

41、er editorial improvements.A list of all parts in the ISO 9934 series, published under the general title Non-destructive testing Magnetic particle testing, can be found on the ISO website.DIN EN ISO 9934-1:2017-03 EN ISO 9934-1:2016 (E) 4 1 ScopeThis document specifies general principles for the magn

42、etic particle testing of ferromagnetic materials. Magnetic particle testing is primarily applicable to the detection of surface-breaking discontinuities, particularly cracks. It can also detect discontinuities just below the surface but its sensitivity diminishes rapidly with depth.This document spe

43、cifies the surface preparation of the part to be tested, magnetization techniques, requirements and application of the detection media, and the recording and interpretation of results. Acceptance criteria are not defined. Additional requirements for the magnetic particle testing of particular items

44、are defined in product standards (see the relevant International Standards or European standards).This document does not apply to the residual magnetization method.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes re

45、quirements 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 3059, Non-destructive testing Penetrant testing and magnetic particle testing Viewing conditionsISO 9934-2,

46、Non-destructive testing Magnetic particle testing Part 2: Detection mediaISO 9934-3, Non-destructive testing Magnetic particle testing Part 3: EquipmentISO 12707, Non-destructive testing Magnetic particle testing VocabularyEN 1330-1, Non-destructive testing Terminology Part 1: General termsEN 1330-2

47、, Non-destructive testing Terminology Part 2: Terms common to non-destructive testing methods3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 12707, EN 1330-1 and EN 1330-2 apply.ISO and IEC maintain terminological databases for use in standardization

48、at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obpDIN EN ISO 9934-1:2017-03 EN ISO 9934-1:2016 (E)5 4 Qualification and certification of personnelIt is assumed that magnetic particle testing is performed by qualified and capable personnel. In order to provide this qualification, it is recommended to certify the personnel in accordance with ISO 9712 or equivalent.5 Safety and enviro