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1、BRITISH STANDARD BS EN 13674-4:2006 Railway applications Track Rail Part 4: Vignole railway rails from 27 kg/m to, but excluding 46 kg/m ICS 45.080 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - w - - - - EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13674-4:2006+A1
2、 November 2009 ICS 93.100 Supersedes EN 13674-4:2006 English Version Railway applications - Track - Rail - Part 4: Vignole railway rails from 27 kg/m to, but excluding 46 kg/m Applications ferroviaires - Voie - Rail - Partie 4: Rails Vignole de masse comprise entre 27 kg/m et 46 kg/m, 46 kg/m non co
3、mpris Bahnanwendungen - Oberbau - Schienen - Teil 4: Vignolschienen mit einer lngenbezogenen Masse zwischen 27 kg/m und unter 46 kg/m This European Standard was approved by CEN on 9 January 2006 and includes Amendment 1 approved by CEN on 22 September 2009. CEN members are bound to comply with the C
4、EN/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 standards may be obtained on application to the CEN Management Centre or
5、 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 the CEN Management Centre has the same status as the official ver
6、sions. 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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
7、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 in any form and by any means reserved worldwide for CEN nationa
8、l Members. Ref. No. EN 13674-4:2006+A1:2009: E EN 13674-4:2006+A1:2009 (E) 2 Contents page Foreword 3 1 Scope 7 2 Normative references 7 3 Terms and definitions .7 4 Information to be supplied by the purchaser .8 5 Steel grades 9 6 Dimensions, static properties, linear mass and tolerances . 10 7 Man
9、ufacture . 10 7.1 Product integrity . 10 7.1.1 Factory production control 10 7.1.2 Best practice manufacture . 10 7.2 Blooms . 11 7.3 Rails . 11 7.4 Identification 11 7.4.1 Branding 11 7.4.2 Hot stamping . 11 7.4.3 Cold stamping . 12 7.4.4 Other identification . 12 8 Qualification of the manufacture
10、r . 12 9 Acceptance tests 12 9.1 Laboratory tests 12 9.1.1 General . 12 9.1.2 Chemical composition . 12 9.1.3 Microstructure . 16 9.1.4 Decarburisation . 16 9.1.5 Hardness 17 9.1.6 Tensile tests 18 9.1.7 Retest procedures 18 9.2 Dimension tolerances 19 9.2.1 Profile . 19 9.2.2 Straightness and twist
11、 . 20 9.2.3 Cutting and drilling . 20 9.3 Gauges . 21 9.4 Inspection for internal quality and surface quality . 21 9.4.1 internal quality 21 9.4.2 Surface quality 23 Annex A (normative) Rail profiles . 34 Annex B (informative) Comparison of steel designations referred to in this European Standard co
12、mpared to those in EN 10027-1 and EN 10027-2 . 64 Bibliography . 65 BS EN 13674-4:2006+A1:2009 EN 13674-4:2006+A1:2009 (E) 3 Foreword This document (EN 13674-4:2006+A1:2009) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of which is held by DIN. This Euro
13、pean 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 conflicting national standards shall be withdrawn at the latest by May 2010. Attention is drawn to the possibility that some of the elements of
14、 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 includes Amendment 1, approved by CEN on 2009-09-22. This document supersedes EN 13674-4:2006. The start and finish of text introduced or
15、altered by amendment is indicated in the text by tags !“. This part of EN 13674 is the fourth of the series EN 13674 Railway applications Track Rail which consists of the following parts: Part 1: Vignole railway rails 46 kg/m and above; Part 2: Switch and crossing rails used in conjunction with Vign
16、ole railway rails 46 kg/m and above; Part 3: Check rails; Part 4: Vignole railway rails from 27 kg/m to, but excluding 46 kg/m. Other standards planned for publication include the following: !EN 14587-1 Railway applications Track Flash butt welding of rails Part 1: New R220, R260, R260Mn and R350HT
17、grade rails in a fixed plant; EN 14587-2 Railway applications Track Flash butt welding of rails Part 2: New R220, R260, R260Mn and R350HT grade rails by mobile welding machines at sites other than at a fixed plant; prEN 14587-3 Railway applications Track Flash butt welding of rails Part 3: Welding i
18、n association with crossing construction; EN 14730-1 Railway applications Track Aluminothermic welding of rails Part 1: Approval of welding processes; EN 14730-2 Railway applications Track Aluminothermic welding of rails Part 2: Qualification of aluminothermic welders, approval of contractors and ac
19、ceptance of welds; EN 14811 Railway applications Track Special purpose rail Grooved and associated construction; EN 15594“ Railway applications Track Restoration of rails by electric arc welding. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
20、 countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech BS EN 13674-4:2006+A1:2009 EN 13674-4:2006+A1:2009 (E) 4 Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlan
21、ds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 13674-4:2006+A1:2009 EN 13674-4:2006+A1:2009 (E) 5 Introduction This introduction provides an explanation of the concepts and reasoning used in the drafting of this European Standard. Its
22、inclusion also ensures that during future revisions, restrictions are removed where technology progresses and held where it does not, thus ensuring continued safety as new manufacturers, products and technologies are introduced. The most commonly used standards of the world for the supply of railway
23、 rails have been reviewed during the preparation of this European Standard. However, modern rail production technology within the European Union has demanded a completely new look at the philosophy and content of this part of EN 13674. Whenever possible this part of EN 13674 is performance based, re
24、cognises the European Quality System standard EN ISO 9001 and requires manufacturers to offer the latest proven technology to consistently satisfy the demanding quality of the required product. Rail grading is based on hardness rather than tensile strength. The acceptance tests have been designed to
25、 control those characteristics of the rail steel and rail that are of relevance to the production of high quality rails and the demands of the railway. The steel grades covered by this part of EN 13674 reflect trends in railway usage and heat treated rails are included. This European Standard includ
26、es rail profiles for Vignole rails having a linear mass from 27 kg/m to, but excluding 46 kg/m. To ensure the supply of high quality rails, some restrictions on production processes have been imposed. This European Standard supersedes national standards covered by the scope. In addition CEN required
27、, where possible, a performance based standard, taking into account safety implications and at the same time addressing modern production technology. It was recognised that there would be few opportunities (and these would have to be for transparent safety considerations) for derogation from this Eu
28、ropean Standard to operate between the user and the manufacturer. This European Standard reflects this change in philosophy from the traditional content of rail standards. A review was undertaken of the most commonly used rail standards of the world. All relevant aspects important to both user and m
29、anufacturer were considered with the aim of ensuring that all of the content had specific usefulness and relevance. For example rail grading and much of this European Standard has been based on hardness rather than tensile strength. Whilst the two are directly related, hardness is very quick and che
30、ap to carry out and provides more relevant guidance to the user particularly where properties vary in different parts of the profile. Since many rail manufacturers would not have previously carried out proving trials, this European Standard includes a prerequisite for all manufacturers to prove conf
31、ormity against a set of qualifying test criteria at the time of tendering. The qualifying tests include all “normal” acceptance test results plus new type-casting features such as fracture toughness, fatigue and residual stress (see EN 13674-1). To provide users with the necessary confidence, accept
32、ance limits have been based on results from rail known to have performed well in demanding track installations. One aspect of this European Standard, which is a complete break from tradition, is the inclusion of quality assurance and inspection clause as part of product integrity. BS EN 13674-4:2006
33、+A1:2009 EN 13674-4:2006+A1:2009 (E) 6 In order that quality management systems are consistent across all manufacturers and that users have the best assurance for the consistency of required product quality on this safety critical component of the track, the rail standard requires that the manufactu
34、rers quality assurance systems are at least equivalent to the requirements of EN ISO 9001. The inclusion of this requirement also reduces the need to incorporate detailed method and calibration descriptions on items such as normal chemical composition determination and the need to define more extens
35、ive testing. Ideally, manufacturing techniques should not be referenced in a product standard. However, some rail attributes are either not known in an exact manner or are not measurable with satisfactory statistical significance. In such cases best practice manufacturing techniques have been includ
36、ed as a last resort. The equipment specified is that which gives the best probability of achieving the required product for use in track. In the future new technology can add to, but preferably will reduce or delete such items. Examples of areas where the technological state of the art renders the s
37、tandard less than complete include: oxide/oxygen relationships; hydrogen test techniques; roller straightening effects on residual stresses; roller straightening effects on contact scrub; measurement and effect of residual stresses throughout the rail. BS EN 13674-4:2006+A1:2009 EN 13674-4:2006+A1:2
38、009 (E) 7 1 Scope This part of EN 13674 specifies flat bottom Vignole railway rails from 27 kg/m to, but excluding 46 kg/m. Five pearlitic steel grades are specified covering a rail hardness range of 200 HBW to 390 HBW and include non-heat-treated non-alloy steels, non-heat-treated alloy steels and
39、heat-treated non-alloy steels. There are 13 rail profiles specified in this European Standard, but these may not be available in all steel grades. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the
40、 edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. !deleted text“ EN 10163-1, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections Part 1: General requirements EN 13674-1:2003, R
41、ailway applications Track Rail Part 1: Vignole railway rails 46 kg/m and above EN ISO 6506-1, Metallic materials Brinell hardness test Part 1: Test method (ISO 6506-1:2005) !EN ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature (ISO 6892-1:2009)“ 3 Terms and de
42、finitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 heat one liquid steel melt tapped out of a converter or electric arc furnace which includes after continuous casting a given number of blooms relating to the weight of the heat and the extension of t
43、he mixing zone NOTE In the case of sequence casting the blooms belonging to the mixing zone should be clearly defined. 3.2 sequence number of heats, of the same steel grade, which undergo continuous casting in tundishes. Tundishes may be used in parallel if the caster has many strands 3.3 heat treat
44、ed rail rail that has undergone accelerated cooling from austenitizing temperature during the metallurgical transformation period 3.4 re-heated rail all rolled rail that has undergone re-austenitization for heat treatment purposes BS EN 13674-4:2006+A1:2009 EN 13674-4:2006+A1:2009 (E) 8 3.5 mill hea
45、t treated rail heat treated rail that has not undergone re-austenitization after rolling 3.6 rolling process process between the blooms leaving the heating furnace and exiting the finishing pass 3.7 isothermal treatment process process whereby blooms are held for a period of time at an elevated temp
46、erature for diminishing the hydrogen content NOTE 1 For maximum efficiency this is as near to (but below) the pearlite to austenite transformation temperature as is practically possible. NOTE 2 This process is sometimes referred to as sub critical diffusion annealing. 3.8 qualifying tests special tests and criteria which are relevant to some aspects of the service performance of ra