BS EN 14587-2:2024
$167.15
Railway applications. Infrastructure. Flash butt welding of new rails – R200, R220, R260, R260Mn, R320Cr, R350HT, R350LHT, R370CrHT and R400HT grade rails by mobile welding machines at sites other than a fixed plant
| Published By | Publication Date | Number of Pages |
| BSI | 2024 | 44 |
This document specifies requirements for the approval of a welding process by mobile plant, together with the requirements for subsequent welding production. It applies to new Vignole railway rails R200, R220, R260, R260Mn, R320Cr, R350HT, R350LHT, R370CrHT and R400HT grade rails of 46 kg/m and above, as contained in EN 13674-1:2011+A1:2017, welded by a flash butt welding process by mobile plant and intended for use on railway infrastructure. This document applies to the welding of rails into welded strings.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 8 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Requirements for the welding process 4.1 General 4.2 Rail end preparation and horizontal alignment requirements 4.3 Clamping force 4.4 Pre-heating 4.5 Final flashing 4.6 Upsetting 4.7 Unclamping |
| 11 | 4.8 Slippage 4.9 Welding parameters 4.10 Steps across the weld |
| 13 | 4.11 Removal of excess upset |
| 15 | 4.12 Post-weld thermal treatment 5 Procedure approval 5.1 General 5.2 Information to be supplied by the purchaser |
| 16 | 5.3 Sample preparation 5.4 Approval tests 5.4.1 Visual examination 5.4.2 Weld trimming 5.4.3 Weld straightness and flatness 5.4.4 Magnetic particle or dye penetrant testing 5.4.5 Bend test |
| 17 | 5.4.6 Macro examination |
| 19 | 5.4.7 Micro examination 5.4.8 Hardness test 5.4.8.1 General 5.4.8.2 Rail grades R200, R220, R260 and R260Mn 5.4.8.3 Rail grades R320Cr, R350HT, R350LHT, R370CrHT and R400HT 5.4.9 Fatigue test |
| 20 | 5.5 Test report 6 Approval of other rail profiles and grades 6.1 General 6.2 Sample preparation 6.3 Approval tests 6.4 Test report 7 Approval of the contractor 7.1 General |
| 21 | 7.2 Welding procedure 7.3 Operators 7.4 Supervision 7.5 Weld testing 7.6 Equipment 7.7 Field approval of the contractor 8 Weld production following procedure approval 8.1 Weld production 8.2 Information supplied by the purchaser |
| 22 | 8.3 Rail end preparation and horizontal rail alignment requirements 8.4 Weld parameter monitoring 8.5 Weld identification 8.6 Visual examination 8.7 Steps across the weld 8.8 Finishing 8.8.1 Correction of vertical and horizontal weld alignment 8.8.2 Profile finishing of the rail head |
| 23 | 8.9 Weld straightness and flatness 8.9.1 Alignment requirements 8.9.2 Straightness and flatness measurement |
| 24 | 8.10 Bend test 8.10.1 General 8.10.2 Bend test procedure |
| 25 | 8.10.3 Interpretation of results 8.10.4 Retesting 8.10.4.1 Bend test failure weld defects 8.10.4.2 Bend test failure rail defects 8.11 Documentation |
| 26 | Annex A (normative)Bend test requirements |
| 28 | Annex B (normative)Test weld fracture faces – Recording of defects |
| 30 | Annex C (normative)Fatigue test method for flash butt welds C.1 General C.2 Test equipment |
| 32 | C.3 Calibration C.3.1 General C.3.2 Test piece C.4 Fatigue test method C.4.1 General C.4.2 Staircase test method C.4.2.1 Test pieces C.4.2.2 Procedure |
| 33 | C.4.2.3 Data analysis |
| 34 | C.4.2.4 Acceptance criteria |
| 35 | C.4.3 Example of the data analysis of a fatigue strength determination by the staircase method C.4.4 Past-the-post test method C.4.4.1 Test pieces C.4.4.2 Procedure |
| 36 | C.4.4.3 Information to be reported C.4.4.4 Acceptance criterion |
| 37 | Annex D (normative)Macro examination and micro examination D.1 Macro examination D.2 Micro examination |
| 39 | Annex E (normative)Hardness testing |
| 41 | Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive (EU) 2016/797 aimed to be covered |
