DIN EN 10228-1-2016 Non-destructive testing of steel forgings - Part 1 Magnetic particle inspection German version EN 10228-1 2016《钢锻件的无损检验 第1部分 磁粉探伤 德文版本EN 10228-1-2016》.pdf

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1、October 2016 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).ICS 77.040.20; 77.140.85!%V“2579251w

2、ww.din.deDIN EN 10228-1Nondestructive testing of steel forgings Part 1: Magnetic particle inspection;English version EN 102281:2016,English translation of DIN EN 10228-1:2016-10Zerstrungsfreie Prfung von Schmiedestcken aus Stahl Teil 1: Magnetpulverprfung;Englische Fassung EN 102281:2016,Englische b

3、ersetzung von DIN EN 10228-1:2016-10Essais non destructifs des pices forges Partie 1: Contrle par magntoscopie;Version anglaise EN 102281:2016,Traduction anglaise de DIN EN 10228-1:2016-10SupersedesDIN EN 102281:199907www.beuth.deDocument comprises 17 pagesDTranslation by DIN-Sprachendienst.In case

4、of doubt, the German-language original shall be considered authoritative.10.16 DIN EN 10228-1:2016-10 2 A comma is used as the decimal marker. National foreword This document (EN 10228-1:2016) has been prepared by Technical Committee ECISS/TC 111 “Steel castings and forgings” (Secretariat: AFNOR, Fr

5、ance). The responsible German body involved in its preparation was DIN-Normenausschuss Eisen und Stahl (DIN Standards Committee Iron and Steel), Working Committee 10 Schmiedestcke. Amendments This standard differs from DIN EN 10228-1:1999-07 as follows: a) normative references have been updated; b)

6、the key to Figure 1 “Classification of linear indications” has been amended; c) a new footnote c) has been included in Table 2; d) the standard has been editorially revised. Previous editions DIN EN 10228-1: 1999-07 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10228-1 June 2016 ICS 77.040.20

7、; 77.140.85 Supersedes EN 10228-1:1999English Version Non-destructive testing of steel forgings - Part 1: Magnetic particle inspection Essais non destructifs des pices forges - Partie 1 : Contrle par magntoscopie Zerstrungsfreie Prfung von Schmiedestcken aus Stahl - Teil 1: Magnetpulverprfung This E

8、uropean Standard was approved by CEN on 3 October 2015. 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

9、 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 other language made by translation under the responsibility of a CEN memb

10、er 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 Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, Fra

11、nce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KO

12、MITEE 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 10228-1:2016 EEN 10228-1:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative re

13、ferences 4 3 Items for agreement . 4 4 Test procedure . 5 4.1 General 5 4.2 Description 5 4.3 Content 5 5 Personnel qualification . 6 6 Testing system 6 6.1 Magnetizing equipment 6 6.2 Detection media . 6 6.3 Function checks . 6 7 Stage of manufacture . 6 8 Surface condition 7 8.1 General 7 8.2 Surf

14、ace condition related to quality class 7 8.3 As-forged surface condition 7 9 Coverage . 7 10 Magnetization . 7 10.1 Direction of magnetization 7 10.2 Current waveform . 8 10.3 Flux density and field strength . 8 11 Use of detection media 8 12 Viewing conditions . 8 13 Classification of indications 9

15、 14 Recording and acceptance criteria 10 15 Removal of defects . 11 16 Demagnetization 11 17 Test report 11 Annex A (normative) Magnetization using prods or electromagnetic yoke 13 A.1 Definition of tested area with prods or yoke . 13 A.2 Definition of search pattern and examination sequence . 14 An

16、nex B (informative) Significant technical changes to the version EN 10228-1:1999 15 DIN EN 10228 1:2016 10- -EN 10228-1:2016 (E) 3 European foreword This document (EN 10228-1:2016) has been prepared by Technical Committee ECISS/TC 111 “Steel castings and forgings”, the secretariat of which is held b

17、y AFNOR. 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 December 2016 and conflicting national standards shall be withdrawn at the latest by December 2016. Attention is drawn to the possibility t

18、hat 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 10228-1:1999. Annex B provides the significant technical changes to the previous version EN 10228

19、-1:1999. EN 10228 consists of the following parts under the general title Non-destructive testing of steel forgings: Part 1: Magnetic particle inspection; Part 2: Penetrant testing; Part 3: Ultrasonic testing of ferritic or martensitic steel forgings; Part 4: Ultrasonic testing of austenitic and aus

20、tenitic-ferritic stainless steel forgings. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former

21、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 the United Kingdom. DIN EN 10228 1:2016 10- -EN 10228-1:2016 (E)

22、 4 1 Scope This European Standard describes techniques and acceptance criteria to be used for the magnetic particle testing of forgings manufactured from ferromagnetic materials. The method described is used for the detection of surface discontinuities. It can also detect discontinuities just below

23、the surface but the sensitivity to such discontinuities decreases rapidly with depth. NOTE A steel forging is considered to be ferromagnetic if the magnetic flux density is greater than 1 T for a tangential magnetic field strength of 2,4 kA/m. 2 Normative references The following documents, in whole

24、 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. EN ISO 3059, Non-destructive testing Pen

25、etrant testing and magnetic particle testing Viewing conditions (ISO 3059) EN ISO 9712, Non-destructive testing Qualification and certification of NDT personnel (ISO 9712) EN ISO 9934-1, Non-destructive testing Magnetic particle testing Part 1: General principles (ISO 9934-1) EN ISO 9934-2, Non-dest

26、ructive testing Magnetic particle testing Part 2: Detection media (ISO 9934-2) EN ISO 9934-3, Non-destructive testing Magnetic particle testing Part 3: Equipment (ISO 9934-3) 3 Items for agreement The following aspects concerning magnetic particle inspection shall be agreed between the purchaser and

27、 the supplier at the time of enquiry and order: a) the manufacturing stages(s) at which magnetic particle inspection shall be performed (see Clause 7); b) the surface areas to be examined (see Clause 8); c) the quality class required, or the quality classes and the surface areas to which they apply

28、(see 8.2 and Clause 14); d) whether the testing shall be performed with the specified detection media (see 6.2); e) whether a particular current waveform is required (see 10.2); f) the applicable recording and acceptance criteria if different from those detailed in Table 2. g) whether demagnetizatio

29、n shall be carried out after testing, together with the maximum level of residual magnetism (see Clause 16); h) whether testing shall be conducted in the presence of the purchaser or his representative; DIN EN 10228 1:2016 10- -EN 10228-1:2016 (E) 5 i) whether a written procedure shall be submitted

30、for approval by the purchaser (see Clause 4). 4 Test procedure 4.1 General Magnetic particle testing shall be performed in accordance with a written test procedure. Where specified in the enquiry or order, the written procedure shall be submitted to the purchaser for approval prior to the test. 4.2

31、Description This written procedure shall be one of the following: a) a product specification; b) a procedure written specifically for the application; c) this part of EN 10228 may be used if it is accompanied by testing details specific to the application. 4.3 Content The procedure shall contain the

32、 following details as minimum requirements: a) description of the forgings to be tested; b) reference documents; c) qualification of testing personnel; d) stage of manufacture at which the test is carried out; e) surface areas specified in terms of the applicable quality classes; f) magnetizing tech

33、nique(s); g) description of the testing equipment; h) calibration and checking of equipment; i) waveform and flux density and/or tangential field strength required for each technique used; j) detection media, and contrast paint if used; k) surface condition required; l) viewing conditions; m) method

34、 of marking or recording indications; n) whether demagnetization is required; if so the method to be used and required maximum level of residual magnetism; o) acceptance criteria; DIN EN 10228 1:2016 10- -EN 10228-1:2016 (E) 6 p) testing report. 5 Personnel qualification Personnel shall be qualified

35、 in accordance with EN ISO 9712. 6 Testing system 6.1 Magnetizing equipment If the contact current flow (prods) magnetization method is used on a finished machined surface, then the prod contact points shall be checked after magnetization for damage, using an alternative magnetization technique, pen

36、etrant testing or visual examination. All equipment shall be calibrated and checked in accordance with EN ISO 9934-3. One or more of the following types of magnetizing equipment shall be used: a) alternating current electromagnetic yokes (see Annex A); b) current flow equipment with prods (see Annex

37、 A); c) permanent magnets; d) magnetic flow equipment with flexible cable or coil; e) central conductor; f) magnetic induction; g) equipment enabling multiple magnetizing techniques, either coincidentally or in sequence. 6.2 Detection media Detection media shall conform to the requirements detailed

38、in EN ISO 9934-2. 6.3 Function checks A function check shall be carried out prior to the test to ensure the proper functioning of the testing system. The check shall be performed as detailed in EN ISO 9934-1. NOTE The temperature of the forging can be checked to ensure that it is within the detectio

39、n media manufacturers specified temperature limits. 7 Stage of manufacture Where practicable, final acceptance testing shall be performed on the forging in its delivery condition (see Clause 3). DIN EN 10228 1:2016 10- -EN 10228-1:2016 (E) 7 8 Surface condition 8.1 General Surfaces to be examined sh

40、all be clean and free from scale, oil, grease, machining marks, heavy paint and any other contaminant that could adversely affect the testing sensitivity or the interpretation of indications. Cleaning and preparation of the surfaces shall not be detrimental to the material, the surface finish or the

41、 detection media. 8.2 Surface condition related to quality class The finish of surfaces to be tested shall conform to the requirements detailed in Table 1 for the applicable quality class. Table 1 Surface condition Surface roughness parameter Ra*), in m Quality classesa1 2 3 4 6,3 5L3. L1, L2and L3=

42、 individual lengths of interacting indications. Lg= total length of interacting indications Lg= (L1+ d1) + (L2+ d2) + L3. L4, L5and L6= lengths of isolated indications. Lg+ L4+ L5+ L6= cumulative length of indications in reference surface. The total number of indications in the reference surface is

43、4 (as identified by Lg, L4, L5and L6), see Table 2. Figure 1 Classification of linear indications 14 Recording and acceptance criteria Four quality classes shall be applied to a forging or to parts of a forging. Quality class 4 is the most stringent, dictating the smallest recording level and the sm

44、allest acceptance standard. For forgings for general application supplied in the as-forged surface condition only, quality classes 1 and 2 are applicable. DIN EN 10228 1:2016 10- -EN 10228-1:2016 (E) 11 The applicable quality class(-es) shall be agreed between the purchaser and supplier prior to the

45、 test. Table 2 details recording levels and acceptance criteria that shall be applied for four quality classes. NOTE Where agreed, recording levels and acceptance criteria different from those detailed in Table 2 can be used. Table 2 Quality classes, recording levels and acceptance criteriacParamete

46、r Quality class 1 2 3a4bRecording level: indication length (mm) 5 2 2 1 allowable length L of isolated indications and allowable length Lgof interacting indications (mm) 20 8 4 2 allowable cumulative length of indications in the reference surface (mm) 75 36 24 5 Maximum allowable number of indicatio

47、ns in the reference surface 15 10 7 5 aQuality class not applicable to the examination of areas with a machining allowance greater than 3 mm per face. bQuality class not applicable to the examination of areas with a machining allowance greater than 1 mm per face. cReference surface = 148 mm 105 mm (

48、i.e. A6 format) For objects smaller than the reference surface, or if only an area is examined smaller than the reference surface, then the maximum allowable number of indications should be determined and agreed accordingly (the acceptance criteria for the dimensions remain unchanged). 15 Removal of

49、 defects Indications which do not meet the applicable acceptance criteria shall be considered as defects. Removal of a defect shall be followed by further magnetic particle inspection. Provided that the forging dimensions remain in tolerance, defects shall be eliminated by grinding and/or machining. Elimination of a defect by grinding shall be carried out in the direction perpendicular to the defect and in

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