prEN 16273

Railway applications - Track - Forged rail transitions

Standardization in the field of sleepers and bearers. The standard shall provide particular design guidance in the following areas:
-   geometry requirements;
-   material and processing requirements;
-   requirements for fastening points and insulating;
-   test procedures.

Bahnanwendungen - Oberbau - Geschmiedete Schienenübergänge

Diese Europäische Norm legt die Anforderungen für die Zulassung eines Verfahrens, worin eine Schiene eines Profils längs mit einem andersartigen Profil zu einem Teil geschmiedet ist, und nach der Zulassung die Anforderungen an das Schmieden und die Annahme für die laufende Fertigung fest. Die Norm gilt für neue Vignolschienen nach EN 13674-1 und EN 13674-2, die für die Herstellung von Zungen- oder Übergangsschienen verschweißt oder verlascht werden und für den Einsatz in der Eisenbahninfrastruktur vorgesehen sind.

Applications ferroviaires - Voie - Rails forgés

La présente Norme européenne spécifie les exigences relatives à l'homologation d'un processus de forgeage qui consiste à forger une partie d’un rail à un profil de rail différent, ainsi que les exigences relatives à la production ultérieure par forgeage et les critères de réception du produit. La présente norme s'applique aux rails Vignole neufs conformes à l'EN 13674 1 et à l'EN 13674 2, soudés ou éclissés pour former des aiguilles ou des rails mixtes destinés aux infrastructures ferroviaires.

Železniške naprave - Zgornji ustroj - Prekovane prehodne tirnice

General Information

• Status: Not Published
• Publication Date: 29-Jan-2013
• Withdrawal Date: 29-Jul-2013
• ICS: 93.100 - Construction of railways
• Technical Committee: CEN/TC 256 - Railway applications
• Drafting Committee: CEN/TC 256/SC 1/WG 4 - Rails
• Current Stage: 3098 - Decision to reject - Consensus building
• Start Date: 21-May-2013
• Completion Date: 21-May-2013
• Directive: 2008/57/EC - Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community (Recast)
• Mandate: M/275 - Mandate to CEN/CENELEC/ETSI for standardization in the field of railway equipment on the interoperability of the Trans-European high-speed rail system
• Mandate: M/334 - Mandate for programming and standardisation addressed to CEN, CENELEC and ETSI in the field of the Interoperability of the trans-european conventional rail system
• Mandate: M/483 - Mandate for programming and standardisation addressed to the European standardisation bodies under directive 2008/57/EC in the field of the interoperability of the rail system within the European Union
• Ref Project: oSIST prEN 16273:2011 - Railway applications - Track - Forged rail transitions

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2011
Železniške naprave - Zgornji ustroj - Prekovane prehodne tirnice
Railway applications - Track - Forged rail transitions
Bahnanwendungen - Oberbau - Geschmiedete Schienenübergänge
Applications ferroviaires - Voie - Rails forgés
Ta slovenski standard je istoveten z: prEN 16273
ICS:
45.080 7UDþQLFHLQåHOH]QLãNLGHOL Rails and railway
components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2011
ICS 93.100
English Version
Railway applications - Track - Forged rail transitions
Applications ferroviaires - Voie - Rails forgés Bahnanwendungen - Oberbau - Geschmiedete
Schienenübergänge
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 256.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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-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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16273:2011: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Information to be supplied for approval .7
4.1 By the purchaser.7
4.2 By the manufacturer .7
5 Approval of the manufacturer .7
6 Requirements for the forging process .7
6.1 General .7
6.2 Forging parameters .7
6.3 Post heat treatment .7
6.4 Profile finishing .7
6.5 Cutting to length .8
6.6 Identification .8
7 Procedure approval .8
7.1 General .8
7.2 Test specimen preparation .8
7.3 Number of specimens .8
7.4 Non-destructive approval tests .8
7.4.1 Geometry and dimensions .8
7.4.2 Visual inspection . 12
7.4.3 Surface finish . 12
7.4.4 Dye penetrant (DPI) or magnetic particle inspection (MPI) . 12
7.4.5 Ultrasonic testing (US) . 13
7.5 Destructive approval tests . 13
7.5.1 Hardness distribution . 13
7.5.2 Switch rails: hardness distribution in the rail head . 16
7.6 Test report . 18
7.7 Validity of approval . 18
8 Production tests. 18
8.1 Switches . 18
8.1.1 Geometry and dimensions . 18
8.1.2 Hardness testing . 19
8.2 Transition rails . 19
8.2.1 Hardness . 20
Annex A (informative) Ultrasonic testing . 21
A.1 Reference line (DAC) generation – reference block . 21
A.2 Reference line (DAC) generation and acceptance criteria . 22
Annex B (informative) Documentation of approval tests . 24
B.1 Forged switch rails . 24
B.2 Forged transition rails . 31
Bibliography . 36

Foreword
This document (prEN 16273:2011) has been prepared by Technical Committee CEN/TC 256 “Railway
applications”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
Introduction
This standard has 3 main topics:
 requirements of a forged part;
 procedure approval;
 forged rail production following approval.
This standard satisfies the needs of the railway authority and the manufacturer shall achieve the specified
requirements of this standard.
1 Scope
This European Standard specifies the requirements for the approval of a process wherein a rail of one profile
has part of its length forged to a different profile, together with the requirements for subsequent forging
production and product acceptance. The standard applies to new Vignole rails according to EN 13674-1 and
EN 13674-2, to be welded or fish plated to make up switch rails or transition rails intended for use on railway
infrastructures.
2 Normative references
The following referenced documents are indispensable for the application 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.
EN 571-1, Non destructive testing – Penetrant testing – Part 1: General principles
EN 13232-5, Railway applications – Track – Switches and crossings – Part 5: Switches
EN 13674-1, Railway applications – Track – Rail – Part 1: Vignole railway rails 46 kg/m and above
EN 13674-2, Railway applications – Track – Rail – Part 2: Switch and crossing rails used in conjunction with
Vignole railway rails 46 kg/m and above
EN ISO 6507-1, Metallic materials – Vickers hardness test – Part 1: Test method (ISO 6507-1)
EN ISO 9934 series, Non-destructive testing – Magnetic particle testing (ISO 9934 series)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
manufacturer
company that produces forged switch and transition rails
3.2
purchaser
buyer of the forged switch or transition rails in accordance with the requirements of the railway authority
3.3
railway infrastructure
permanent way of national or private railways
3.4
specimen
portion detached from a forged rail transition and prepared as required for testing
3.5
profile finishing
operation by which the rail or relevant part of the component is returned to required profile
NOTE This operation can be by grinding, milling, planing or any other suitable means.
3.6
finished condition
finished component
3.7
railway authority (RA)
either the railway regulator or the owner of the railway infrastructure or the custodian with a delegated
responsibility for a railway infrastructure
3.8
flexible switch
the switch rail in the movable area of the switch is made of one profile only. This can be either a standard rail
profile or a special profile
3.9
spring rail switch
the switch rail in the movable area of the switch is made of two different profiles. The transition and the weld
between one to the other profile takes place in the movable part of the switch rail and can be either a standard
rail profile or a special profile

Flash butt weld
3.10
forged part for switches
the forged part is the end section of a switch rail with the transition. It is made of one profile only

3.11
transition rail
part of a symmetrical vignole rail profile 1 forged to another symmetrical vignole rail profile 2

3.12
heat affected zone (HAZ)
part of the rail heated to a temperature affecting the hardness
4 Information to be supplied for approval
4.1 By the purchaser
The following information shall be supplied by the purchaser, agreed with the manufacturer and shall be fully
documented:
a) the initial and final rail profiles, length of the switch rail or transition rail and geometrical requirements of
the rail transition;
b) the rail grade;
c) the profile class of the rail leg-end extension as specified in EN 13674-1 and EN 13674-2.
4.2 By the manufacturer
The following information shall be supplied by the manufacturer, agreed with the purchaser and shall be fully
documented:
a) a drawing of the switch or transition rail.
5 Approval of the manufacturer
The manufacturer shall operate an independently approved and audited quality assurance system, e.g.
conforming to the requirements of EN ISO 9001 or other approval accepted by the purchaser.
6 Requirements for the forging process
6.1 General
All heating, forging and cooling shall be carried out in a controlled process.
6.2 Forging parameters
The forging process and any post heat treatment, including the working ranges, shall be determined during
procedural trials and once approval has been granted. They shall not be changed without prior purchaser
approval.
The parameters shall be monitored and checked against approval limits. These record
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