UNI EN 14587-2 : 2009
Current
The latest, up-to-date edition.
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 A FIXED PLANT
10-08-2009
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements for the welding process
4.1 General
4.2 Clamping force
4.3 Pre-heating - flashing
4.4 Progressive flashing
4.5 Upsetting
4.6 Upset current
4.7 Unclamping
4.8 Welding program and records
4.9 Step across the weld
4.10 Weld trimming
4.11 Post-weld heat treatment
5 Procedure approval of a MFBW machine
5.1 General
5.2 Sample preparation
5.3 Approval tests
5.4 Test result report
6 Approval of other rail profiles or grade
6.1 General
6.2 Approval tests
7 Approval of the Welding Contractor
7.1 General
7.2 Requirements for initial approval
7.3 Field approval of the welding contractor
7.4 Audits
8 Weld production and acceptance requirements
8.1 Information from the purchaser
8.2 Site preparation of rail ends
8.3 Rail alignment
8.4 Weld parameter monitoring
8.5 Weld identification
8.6 Visual inspection
8.7 Steps across the weld
8.8 Profile finishing of the rail head
8.9 Geometrical acceptance criteria
8.10 Weld production testing
8.11 Documentation
Annex A (normative) - Bend test requirements
Annex B (normative) - Test weld fracture faces - Recording
of defects
Annex C (normative) - Fatigue test method for flash butt welds
Annex D (normative) - Macro examination and micro
examination
Annex E (normative) - Hardness testing
Annex ZA (informative) - Relationship between this European
Standard and the Essential Requirements of EU
Directive 2008/57/EC
Bibliography
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