DIN EN 1369-2013 Founding Magnetic particle testing German version EN 1369 2012《铸造 磁粉检测 德文版本EN 1369-2012》.pdf

1、January 2013 Translation by DIN-Sprachendienst.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).IC

2、S 19.100; 77.180!$gJ“1936839www.din.deDDIN EN 1369Founding Magnetic particle testing;English version EN 1369:2012,English translation of DIN EN 1369:2013-01Gieereiwesen Magnetpulverprfung;Englische Fassung EN 1369:2012,Englische bersetzung von DIN EN 1369:2013-01Fonderie Contrle par magntoscopie;Ver

3、sion anglaise EN 1369:2012,Traduction anglaise de DIN EN 1369:2013-01SupersedesDIN EN 1369:1997-02www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 26 pages 12.12 DIN EN 1369:2013-01 2 A comma is used as the decimal marker. National forew

4、ord This document (EN 1369:2012) has been prepared by Technical Committee CEN/TC 190 “Foundry techno-logy” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Gieereiwesen (Foundry Practice Standards Committee), Working Committee NA 036-00-03

5、AA Prfverfahren fr Gusswerkstoffe. Amendments This standard differs from DIN EN 1369:1997-02 as follows: a) normative and informative references have been updated; b) Table 1 has been transferred to Annex B; c) two new severity levels have been added in Table 2; d) Annex A “Conversion of severity le

6、vels of linear (LM) and aligned (AM) indications” has been added; e) a Bibliography has been added. Previous editions DIN EN 1369: 1997-02 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1369 October 2012 ICS 19.100; 77.180 Supersedes EN 1369:1996English Version Founding - Magnetic particle tes

7、ting Fonderie - Contrle par magntoscopie Gieereiwesen - Magnetpulverprfung This European Standard was approved by CEN on 1 September 2012. 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 nation

8、al 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). A versi

9、on 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, Cyprus, Cz

10、ech 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 and United Kingdom.

11、EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1369:2012: EEN 1369:2012

12、 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Conditions for magnetic particle testing .54 Method of testing .64.1 Operating mode .64.2 Qualification of the operators .64.3 Surface preparation .64.4 Conditions of testing .65 Acceptance criteria 65.1 Indications of

13、discontinuities .65.2 Definition of magnetic particle indications .75.3 Severity levels 86 Classification of the indications and interpretation of results .96.1 Classification of the indications using Tables 1 and 2 96.2 Classification of the indications using the reference figures .96.3 Interpretat

14、ion of results 97 Cleaning after examination and demagnetization . 108 Test report . 10Annex A (normative) Conversion of severity levels of linear (LM) and aligned (AM) indications . 12Annex B (Informative) Nature of discontinuities and types of corresponding magnetic particle indications . 13Annex

15、C (informative) Reference figures Non-linear indications designated SM 14Annex D (informative) Reference figures Linear and aligned indications designated LM and AM 17Annex E (informative) Model of a magnetic particle test report 21Annex F (informative) Significant technical changes between this Eur

16、opean Standard and the previous edition of EN 1369 . 23Bibliography . 24DIN EN 1369:2013-01EN 1369:2012 (E) 3 Foreword This document (EN 1369:2012) has been prepared by Technical Committee CEN/TC 190 “Foundry technology”, the secretariat of which is held by DIN. This European Standard shall be given

17、 the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn to the possibility that some of the elements of this document may be th

18、e 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 1369:1996. Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 11 “Surface inspection“ to revise EN 1369:1996. Anne

19、x F provides details of significant technical changes between this European Standard and the previous edition. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

20、 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, Switzerland, Turkey

21、and the United Kingdom. DIN EN 1369:2013-01EN 1369:2012 (E) 4 Introduction This European Standard complements the general principles of magnetic particle testing given in EN ISO 9934-1 for the additional requirements for castings. Magnetic particle testing as well as any other non-destructive examin

22、ation method is a part of a general or specific assessment of the quality of a casting to be agreed between the manufacturer and the purchaser at the time of acceptance of the order. This European Standard also gives acceptance criteria through severity levels defined by the nature, the area and the

23、 dimensions of the discontinuities present. DIN EN 1369:2013-01EN 1369:2012 (E) 5 1 Scope This European Standard specifies a magnetic particle testing method for ferro-magnetic iron and steel castings. NOTE An iron or steel casting is considered to be ferro-magnetic if the magnetic induction is grea

24、ter than 1 T (Tesla) for a magnetic field strength of 2,4 kA/m. 2 Normative references The following documents, in whole 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, th

25、e latest edition of the referenced document (including any amendments) applies. EN ISO 9712, Non-destructive testing Qualification and certification of NDT personnel (ISO 9712:2012) EN ISO 3059, Non-destructive testing Penetrant testing and magnetic particle testing Viewing conditions (ISO 3059) EN

26、ISO 9934-1, Non-destructive testing Magnetic particle testing Part 1: General principles (ISO 9934-1) EN ISO 9934-2, Non-destructive testing Magnetic particle testing Part 2: Detection media (ISO 9934-2) 3 Conditions for magnetic particle testing The manufacturing stage(s) when magnetic particle tes

27、ting is to be performed shall be clearly defined by agreement between the manufacturer and the purchaser by the time of ordering. The methods detailed in this standard shall only apply to the agreed surfaces of the castings and the percentage or number of castings to be checked. The areas of the cas

28、tings and the percentage of the castings to be inspected shall be indicated in the enquiry. The sensitivity can differ depending on the method of magnetic particle testing selected. The order shall specify at least: a) the method to be used (type of detection media); b) whether the casting is to be

29、demagnetized after testing has been performed (viz. maximum residual field strength values). And for each area of the casting to be inspected (see Clauses 5 and 6), the following shall be specified: c) the type of discontinuity; d) the severity level. NOTE The type of discontinuity and the severity

30、level can vary depending on the area of the casting inspected. For the classification, depending on the shape of the indication of the discontinuities (see Annex B), reference shall be made to the severity levels defined in Tables 1 and 2 (see 6.1). The conversion from the severity levels specified

31、in EN 1369:1996 1 Table 3 to severity levels in Table 2 of the present edition is given in Table A.1. DIN EN 1369:2013-01EN 1369:2012 (E) 6 The indications resulting from a testing can be compared to the reference figures. The reference figures are included for convenience only. In the event of a di

32、spute, reference shall be made to the tables. 4 Method of testing 4.1 Operating mode The operating mode shall be as described in EN ISO 9934-1. Detection media shall be in accordance with the requirements of EN ISO 9934-2. Unless otherwise specified, it is necessary to carry out the testing with mag

33、netizing sequentially in two directions perpendicular to each other (see EN ISO 9934-1), in order to ensure that each discontinuity runs against the flux in at least one direction. When the direction of stress is known, the testing may be performed in one direction only, in order to take into accoun

34、t the most detrimental discontinuity. NOTE The magnetic images need not necessarily correspond to discontinuities as pseudo-defects can appear. 4.2 Qualification of the operators Unless otherwise agreed, the testing shall be performed by personnel, qualified in accordance with EN ISO 9712 or by a ce

35、rtification scheme which is considered to be equivalent. 4.3 Surface preparation The surface to be inspected shall be clean, free from rust, sand, scale, moulding and mould coating residues, oil, grease or any other contaminant which can interfere with a correct testing. If sand blasting or shot bla

36、sting is required, it shall be as light as possible, in order to avoid sealing or closing up possible discontinuities. The surface to be tested may be painted to provide a contrast before testing (see EN ISO 9934-1). To detect the smallest indication to be considered, the surface finish shall be in

37、accordance with Table 3, unless otherwise specified at the time of ordering. It is recommended that the assessment of surface finish be carried out using a visual tactile surface roughness comparator rather than an instrumental method (see EN 1370 2). 4.4 Conditions of testing The testing shall be c

38、arried out with the naked eye or at a maximum magnification of three and viewing conditions in conformity with EN ISO 3059. 5 Acceptance criteria 5.1 Indications of discontinuities The discontinuities that are usually seen on a casting are given in Annex B in the nomenclature (A, B, C, D, E, F, H or

39、 K). These discontinuities can give indications, magnetic diagrams and groups of indications on any given surface. These indications can all be of different types. DIN EN 1369:2013-01EN 1369:2012 (E) 7 5.2 Definition of magnetic particle indications 5.2.1 General The discontinuity indications reveal

40、ed by the magnetic particle testing can have different shapes and sizes. The distinction between the discontinuity indications is made depending on the ratio of the length L of the indication to its width W in the manner described in 5.2.2 and 5.2.3. 5.2.2 Non-linear indications (SM) The indications

41、 are considered to be non-linear when the length L is smaller than three times the width W. The symbol for non-linear indications is SM (S for surface and M for magnetic particle). 5.2.3 Linear and aligned indications (LM and AM) 5.2.3.1 Linear indications (LM) The indications are considered to be l

42、inear when the length L is greater than or equal to 3 W. The symbol for linear indications is LM (L for linear and M for magnetic particle). 5.2.3.2 Aligned indications (AM) Indications are considered to be aligned in the following cases: non linear: the distance between indications is less than 2 m

43、m and at least three indications are noted; linear: the distance between two indications is smaller than the length L of the longest discontinuity in the alignment. An alignment of indications is considered to be a unique indication. Its length is equal to the overall length L of the alignment. The

44、overall length L is the developed distance between the starting point of the first discontinuity and the finishing point of the last discontinuity. EXAMPLE L = l1+l2+l3+l4+l5(see Figure 1). Figure 1 Example for L The symbol for aligned indications is AM (A for aligned and M for magnetic particle). D

45、IN EN 1369:2013-01EN 1369:2012 (E) 8 5.3 Severity levels 5.3.1 General The severity levels are designed as a reference scale and are defined depending on the types of indications. 5.3.2 Non-linear indications For the non-linear indications, the severity levels (see Table 1) are defined by: the lengt

46、h (largest dimension) L1of the smallest indication to be taken into account; if applicable, the maximum total surface area of the indications in a given surface (the frame 105 mm 148 mm corresponds to the ISO format A6); the maximum length L2of the indications. 5.3.3 Linear and aligned indications F

47、or the linear and aligned indications, the severity levels (see Table 2) are defined by: the length (largest dimension) L1of the smallest indication to be taken into account; the maximum length L2,isolated or cumulative, of the linear and aligned indications. 5.3.4 Selection of the severity level Th

48、e severity levels shall be selected from Tables 1 and/or 2: Table 1 corresponds to non-linear indications (isolated) (SM); Table 2 corresponds to linear (LM) indications and aligned (AM) indications. Reference figures corresponding to non-linear, aligned and clustered indications in accordance with Table 1 and Table 2 are represented in Annexes C and D for guidance only. Table 1 and Table 2 are independent (differe