oSIST prEN 14587-2:2021

SLOVENSKI STANDARD
01-september-2021
Železniške naprave - Infrastruktura - Uporovno varjenje tirnic - 2. del: Varjenje
novih tirnic kakovosti R200, R220, R260, R260Mn, R320Cr, R350HT, R350LHT,
R370CrHT in R400HT s prevoznimi varilnimi stroji zunaj proizvodnega postroja
Railway applications - Infrastructure - Flash butt welding of rails - Part 2: New R200,
R220, R260, R260Mn, R320Cr, R350HT, R350LHT, R370CrHT and R400HT grade rails
by mobile welding machines at sites other than a fixed plant
Bahnanwendungen - Infrastruktur - Abbrennstumpfschweißen von Schienen - Teil 2:
Abbrennstumpfschweißen neuer Schienen der Stahlsorten R200, R220, R260, R260Mn,
R320Cr, R350HT, R350LHT, R370CrHT und R400HT durch mobile Schweißmaschinen
an Orten außerhalb eines Schweißwerkes
Applications ferroviaires - Infrastructure - Soudage des rails neufs par étincelage - Partie
2 : Rails de nuances R200, R220, R260, R260Mn, R320Cr, R350HT, R350 LHT,
R370CrHT et R400HT par des machines à souder mobiles dans des sites autres qu'une
installation fixe
Ta slovenski standard je istoveten z: prEN 14587-2
ICS:
25.160.10 Varilni postopki in varjenje Welding processes
93.100 Gradnja železnic Construction of railways
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2021
ICS 25.160.10; 93.100 Will supersede EN 14587-2:2009
English Version
Railway applications - Infrastructure - Flash butt welding
of rails - Part 2: New R200, R220, R260, R260Mn, R320Cr,
R350HT, R350LHT, R370CrHT and R400HT grade rails by
mobile welding machines at sites other than a fixed plant
Bahnanwendungen - Infrastruktur -
Abbrennstumpfschweißen von Schienen - Teil 2:
Abbrennstumpfschweißen neuer Schienen der
Stahlsorten R200, R220, R260, R260Mn, R320Cr,
R350HT, R350LHT, R370CrHT und R400HT durch
mobile Schweißmaschinen an Orten außerhalb eines
Schweißwerkes
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.

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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

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14587-2:2021 E
worldwide for CEN national Members.

Contents
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Requirements for the welding process . 8
4.1 General . 8
4.2 Rail end preparation and horizontal alignment requirements . 8
4.3 Clamping force . 8
4.4 Pre-heating . 8
4.5 Final flashing . 8
4.6 Upsetting . 8
4.7 Unclamping. 8
4.8 Slippage. 8
4.9 Welding parameters . 9
4.10 Steps across the weld . 9
4.11 Removal of excess upset . 11
4.12 Post-weld thermal treatment . 13
5 Procedure approval. 13
5.1 General . 13
5.2 Information to be supplied by the purchaser . 13
5.3 Sample preparation . 14
5.4 Approval tests . 14
5.4.1 Visual examination . 14
5.4.2 Weld trimming . 14
5.4.3 Weld straightness and flatness . 14
5.4.4 Magnetic particle or dye penetrant testing . 14
5.4.5 Bend test . 14
5.4.6 Macro examination . 15
5.4.7 Micro examination . 16
5.4.8 Hardness test . 16
5.4.9 Fatigue test . 17
5.5 Test report . 17
6 Approval of other rail profiles and grades . 17
6.1 General . 17
6.2 Sample preparation . 17
6.3 Approval tests . 18
6.4 Test report . 18
7 Approval of the contractor. 18
7.1 General . 18
7.2 Welding procedure . 18
7.3 Operators . 18
7.4 Supervision . 18
7.5 Weld testing . 18
7.6 Equipment . 18
7.7 Field approval of the contractor . 18
8 Weld production following procedure approval . 19
8.1 Weld production . 19
8.2 Information supplied by the purchaser . 19
8.3 Rail end preparation and horizontal rail alignment requirements . 19
8.4 Weld parameter monitoring . 19
8.5 Weld identification . 19
8.6 Visual examination . 20
8.7 Steps across the weld . 20
8.8 Finishing . 20
8.8.1 Correction of vertical and horizontal weld alignment . 20
8.8.2 Profile finishing of the rail head . 20
8.9 Weld straightness and flatness . 20
8.9.1 Alignment requirements . 20
8.9.2 Straightness and flatness measurement . 21
8.10 Bend test . 21
8.10.1 General . 21
8.10.2 Bend test procedure . 22
8.10.3 Interpretation of results . 22
8.10.4 Retesting . 23
8.11 Documentation . 23
Annex A (normative) Bend test requirements .
...