1、April 2010 Translation by DIN-Sprachendienst.English price group 12No 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
2、93.100!$aZg“1625568www.din.deDDIN EN 15689Railway applications Track - Switches and crossings Crossing components made of cast austenitic manganese steelEnglish translation of DIN EN 15689:2010-04Bahnanwendungen Oberbau - Weichen und Kreuzungen Gegossener austenitischer Manganstahl fr Herzstckbautei
3、leEnglische bersetzung von DIN EN 15689:2010-04Applications ferroviaires Voie - Appareils de voie Coeurs ou composants de coeur en acier moul au manganseTraduction anglaise de DIN EN 15689:2010-04www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document co
4、mprises 21 pages04.10 DIN EN 15689:2010-04 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 256 “Railway applications” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss
5、Fahrweg und Schienenfahrzeuge (Railway Standards Committee), Working Committee NA 087-00-01-05 UA Weichen und Kreuzungen. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15689 November 2009 ICS 93.100 English Version Railway applications - Track - Switches and crossings - Crossing components ma
6、de of cast austenitic manganese steel Applications ferroviaires - Voie - Appareils de voie - Coeurs ou composants de coeur en acier moul au manganse Bahnanwendungen - Oberbau - Weichen und Kreuzungen -Gegossener austenitischer Manganstahl fr Herzstckbauteile This European Standard was approved by CE
7、N on 10 October 2009. 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 concerning such national standard
8、s may be obtained on application to the CEN 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 its own language and notified to t
9、he CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Neth
10、erlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation
11、 in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15689:2009: EEN 15689:2009 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .54 Quality systems .55 Sample approval 56 General requirements 66.1 Materials (liquid chemistry) 6
12、6.2 Microstructure 66.3 Surface conditions.66.3.1 Un-machined and heat treated surfaces .66.3.2 Definition of surface zones .76.3.3 Machined surfaces.76.3.4 Tolerances 76.4 Internal soundness 86.4.1 General 86.4.2 Definition of zones and acceptance levels .86.4.3 Frequency for radiographic examinati
13、on . 126.5 Foundry practice . 127 Acceptance tests 137.1 Chemical analysis . 137.2 Impact bend . 137.3 Metallographic examination 137.4 Visual inspection 137.5 Dye penetrant testing . 137.6 Radiography 147.6.1 General . 147.6.2 Method of radiography . 148 Additional requirements for pre-hardened cro
14、ssings 148.1 Qualification 148.1.1 Generally 148.1.2 Dye penetration test . 148.1.3 Hardness requirements 148.2 Production tests 168.3 Monitoring of pre-hardening process . 169 Weld rectification of surface discontinuities . 169.1 Qualification of the weld procedure and the welder . 169.2 Definition
15、 of rectification zones, max. dimensions of excavations . 169.3 Testing of weld rectification 179.4 Welding records 1710 Identification and marking . 1711 Documentation 1812 Non-common cast manganese crossings . 18Bibliography . 19DIN EN 15689:2010-04 EN 15689:2009 (E) 3 Foreword This document (EN 1
16、5689:2009) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, 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 May 2010, and confli
17、cting national standards shall be withdrawn at the latest by May 2010. 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 European S
18、tandard is complementary to the series of standards EN 13232 “Railway applications Track Switches and crossings”, which covers the design and quality of switches and crossings in flat bottomed rail. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the follow
19、ing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slove
20、nia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 15689:2010-04 EN 15689:2009 (E) 4 1 Scope The scope of this European Standard is: to establish material requirements for cast austenitic manganese steel for fixed crossings and cradles for crossings with moveable parts designed to be wel
21、ded or bolted to rails; to formulate codes of practice for inspection, testing of un-machined and machined heat-treated castings; to list the methods by which crossings should be identified and traced; to define limits of weld rectification by the supplier; special requirements for pre-hardened cros
22、sings. Geometrical aspects, as machining tolerances and inspection of finished crossings are covered in EN 13232-6 and EN 13232-7 and therefore not in this European Standard. This European Standard specifies the minimum requirements for cast manganese crossing components. Special applications (for i
23、nstance tram systems) can require different demands in certain paragraphs and need to be agreed between customer and supplier. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For u
24、ndated references, the latest edition of the referenced document (including any amendments) applies. EN 444:1994, Non-destructive testing General principles for the radiographic examination of metallic materials using X- and gamma-rays EN 462-3:1996, Non-destructive testing Image quality of radiogra
25、phs Part 3: Image quality classes for ferrous metals EN 473:2008, Non destructive testing Qualification and certification of NDT personnel General principles EN 571-1, Non destructive testing Penetrant testing Part 1: General principles EN 1370, Founding Surface roughness inspection by visual/tactil
26、e comparators EN 1371-1, Founding Liquid penetrant inspection Part 1: Sand, gravity die and low pressure die castings EN 10204, Metallic products Types of inspection documents EN 13232-1:2003, Railway applications Track Switches and crossings Part 1: Definitions EN 13232-6:2005, Railway applications
27、 Track Switches and crossings Part 6: Fixed common and obtuse crossings EN 13232-7:2006, Railway applications Track Switches and crossings Part 7: Crossings with moveable parts EN ISO 11970, Specification and approval of welding procedures for production welding of steel castings (ISO 11970:2001) DI
28、N EN 15689:2010-04 EN 15689:2009 (E) 5 ISO 8062, Castings System of dimensional tolerances and machining allowances 3 Terms and definitions For the purposes of this document, the terms and definitions given in 7.4 and 7.5 of EN 13232-1:2003, 3.1 of EN 13232-6:2005, Clause 4 of EN 13232-7:2006 and th
29、e following apply. 3.1 weldable crossing crossing with rail ends suitable for welding into track 3.2 fishplated crossing crossing with rail ends suitable for mechanical joints 3.3 pre hardened contact area and running table which is intentionally hardened prior to installation in track 3.4 chaplet m
30、etallic core support that remains in finished part 3.5 customer operator or user of the equipment, or the purchaser of the equipment on the users behalf 3.6 supplier body responsible for the use of the EN in response to the customers requirements 4 Quality systems The supplier responsible for the ma
31、nufacture of the crossing shall be certified by an accredited third party and have an audited quality system or shall have a quality system approved by the customer. 5 Sample approval The suitability of the pattern design, mould preparation procedures, casting conditions and heat treatment procedure
32、s shall be demonstrated by producing prototype casting for every new pattern. Sample approval by the supplier is necessary for every new pattern. Any subsequent modifications in the manufacturing process, which may influence the quality of the components, shall be the responsibility of the cast foun
33、dry to test and record. The customer shall have the right to have access to these records. All tests according to Clause 7 shall be performed for sample approval. However, radiography may be dispensed with by the customer, in which case this shall be specified in the tender documents. DIN EN 15689:2
34、010-04 EN 15689:2009 (E) 6 6 General requirements 6.1 Materials (liquid chemistry) Table 1 Materials (liquid chemistry) Element Percentage weight components Weight % Carbon 0,95 to 1,3 aSilicon 0,65 max.Manganese 11,5 to 14,0 aPhosphorus 0,050 max.Sulphur 0,03 max.Nickel 1,75 max.Molybdenum 0,75 max
35、. Chromium 0,50 max.Copper 0,30 max.Aluminium 0,045 max.aManganese shall not be less than 10 times the carbon content. Other alloying elements shall not be added. 6.2 Microstructure Crossing shall have an austenitic microstructure and be free of detrimental carbide precipitation. To prove the as-cas
36、t carbidic structure has changed to an acceptable austenitic structure this shall be demonstrated by metallographic examination or mechanical testing (see Clause 7). 6.3 Surface conditions 6.3.1 Un-machined and heat treated surfaces The minimum level of surface finish shall be as specified in Table
37、2 with the relevant SCRATA comparators (refer to EN 1370). Table 2 Inspection zones Inspection zone Ai Aii Aiii Bi Bii Biii Surface finish A2 A2 A3 A2 A2 A4 Surface inclusions B2 B2 B4 B2 B2 B5 Gas porosity C2 C2 C3 C2 C1 C4 Laps and cold shuts D1 D1 D2 D2 D1 D5 Scabs E3 E3 E5 E3 E3 E5 Welds J1 J1 J
38、1 J1 J1 J1 DIN EN 15689:2010-04 EN 15689:2009 (E) 7 6.3.2 Definition of surface zones The definition of surface zones is as shown in Figure 1. Dimensions in millimetres Figure 1 Definition of surface zones 6.3.3 Machined surfaces The maximum levels of arithmetical roughness are: wheel contact area:
39、Ra 6,3 m; surfaces without wheel contact: Ra 12,5 m; fishplate areas: Ra 6,3 m. 6.3.4 Tolerances Dimensions of non-machined areas of the casting areas shall comply with tolerances given by ISO 8062 CT11 unless otherwise agreed between the customer and supplier. Dimensional tolerances for machined ca
40、stings shall be referenced on detail drawings for the crossing component. Basic dimensional requirements are given in EN 13232-6 and EN 13232-7. DIN EN 15689:2010-04 EN 15689:2009 (E) 8 6.4 Internal soundness 6.4.1 General Check all zones on sample castings over the full length, using radiography ac
41、cording to 7.6.1. 6.4.2 Definition of zones and acceptance levels If the customer requires different quality levels than those stated in the table below, they shall be agreed at the time of tender. In areas with greater width additional radiographs may be taken to determine the location of indicatio
42、ns where possible. Acceptance levels according to ASTM E446, ASTM E280 and ASTM E186 for the zones of test are illustrated in Figures 2 to 6 and Table 3. Table 3 Inspection zone Zone Location Acceptance level See Figure Zone 1 running surface and rail weldable endpieces A1 B1 C1 2, 3, 4, 6 Zone 2 un
43、der running surface on the nose up to 60 mm nose width A3 B3 C3 2, 3 Zone 3 below Zone 1; wing rail limited by a distance of 400 mm from theoretical point towards wing front rearwards up to the end of the running surface A3 B3 C3 3 Zone 4 changes of section (below Zone 1) A3 B3 C3 2, 5 Zone 5 web of
44、 the leg ends of fishplated crossings for the whole length of the fishplate A3 B3 C3 6 Rest all other zones of the crossing A3 B3 C4 All A = Gas porosity B = Inclusions (sand and slag) C = Shrinkage The minimum depths of the different zones are post machining. DIN EN 15689:2010-04 EN 15689:2009 (E)
45、9 Dimensions in millimetres Key 1 theoretical point rearwards 5 zone 4 2 theoretical point toward wing front 6 zone 2 under zone 1 3 wheel transfer area 7 thickness of vee measured at 14 mm below running surface 4 end of running table Figure 2 Crossing NOTE 1 For section A-A and B-B, see Figure 3. N
46、OTE 2 For section C-C, see Figure 4. NOTE 3 For view on D, see Figure 6. DIN EN 15689:2010-04 EN 15689:2009 (E) 10 Dimensions in millimetres Figure 3 Wheel transfer area Dimensions in millimetres Figure 4 Remaining length of crossing DIN EN 15689:2010-04 EN 15689:2009 (E) 11 Dimensions in millimetre
47、s Key 1 change of section from rail profile to main body 2 minimum 280 Figure 5 Changes of section DIN EN 15689:2010-04 EN 15689:2009 (E) 12 Dimensions in millimetres Key 1 crossing endpiece to be welded 2 leg end of fishplated crossing Figure 6 View D 6.4.3 Frequency for radiographic examination On
48、e in every 50 crossings of each pattern type shall be checked by radiography in the following locations: a) the nose zones 1 and 2 up to where nose width equals 60 mm; b) the wheel transfer area zones 1 and 3; c) leg ends 50 mm back from as-cast end face; d) changes of sections minimum coverage to b
49、e 280 mm centred on the change of section. If the levels are not met, the customer shall be informed; the production shall be stopped and the process shall be reviewed. Failure to meet the above minimum radiographic acceptance levels will render the examined crossing scrap, unless a concession is granted by the customer for the affected crossing. 6.5 Foundry pr
