uic 860 o vs en 13674 1 n.
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UIC 860.O vs. EN 13674-1 - PowerPoint PPT Presentation


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UIC 860.O vs. EN 13674-1. DB 410/04. Standard organisation. National committees AFNOR and 31 standardisation offices in France ( BNS, BNF........) BSI in UK DIN in Germany ASTM in USA, JIS in Japan, ... International committees ISO CEN Railway dedicated committees: UIC, AREMA.

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UIC 860.O vs. EN 13674-1


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    1. UIC 860.O vs. EN 13674-1 DB 410/04

    2. Standard organisation • National committees • AFNOR and 31 standardisation offices in France ( BNS, BNF........) • BSI in UK • DIN in Germany • ASTM in USA, • JIS in Japan, ... • International committees • ISO • CEN • Railway dedicated committees: UIC, AREMA

    3. Europeantrack technical committee • CEN/TC 256/SC 1 • GT 4 : Rails and welding of rails • GT 5 : Machines for construction and maintenance of the track • GT 15: Parameters for track design • GT 16: Sleepers • GT 17: Fastening systems • GT 18: Switches and crossings • GT 21: Track approval

    4. Standards for rails and welding • Part 1: Vignole railway rails 46 kg/m and above • Others: • Switch and crossing rails • Vignole railway rails from 27 kg/m to but excluding 46 kg/m • Aluminothermic welding • Flash butt welding

    5. Content of the standards • Normative references • Quality system • Production process • Steel grades and profiles • Qualifying tests • Acceptance tests

    6. UIC 4 grades 700 900A 900B 1100 EN 7 grades R 200 R 220 R 260 R 260Mn R 320Cr R 350HT R 350LHT Grades Head hardened rails

    7. Chemical compositionMechanical properties UIC

    8. Chemical compositionMechanical properties Hardness EN S max

    9. UIC 4 profiles Branding UIC XX XX = mass per meter EN 21 profiles (Note : Euro  UIC) Branding YY E 1, 2, YY: mass per meter 1,2,…geometrical variant for a same mass per meter Profiles

    10. Computerized profile design EN UIC

    11. EN profiles and previous profiles

    12. Branding CORUS HY 04 60E1

    13. Tensile strength and elongation Development of a predictive equation using multiple regression analysis For each heat, calculation of the tensile strength and elongation Results have to be higher than the specified values Comparison with experimental results every 2 000 tons Qualifying tests

    14. Fracture mechanics Fatigue Residual stress KIC: toughness. Da/Dn: fatigue crack growth rate Constant amplitude fatigue tests Limitation of the residual stress in rail foot, due to the straightening Qualifying tests

    15. Chemical composition Microstructure Decarburisation Oxide cleanness Sulphur prints Hardness Tensile tests Dimension tolerances Straightness, surface flatness and twist Ultrasonic test requirements Surface quality Acceptance tests

    16. Hardness

    17. Profile tolerances • New requirement: • Crown profile

    18. Straightness

    19. Straightness • New requirement: • Twist

    20. Ultrasonic test • 100% of the the rail length • Cross-sectional area: • ³70% Head • ³ 60% Web • Foot • Calibration: Flat bottomed Æ 2 mm

    21. Surface quality

    22. Conclusion • Most commonly used standards of the world for the supply of railway rails have been reviewed during the preparation of this standard • Modern rail production technology and the requirements of railways within the Community have demanded a completely new look at the philosophy and content • This EN is performance based and requires manufacturers to offer the latest proven technology to consistently satisfy the demanding quality of the required product • Guarantee is considered as a commercial aspect by CEN. Therefore, it is not included in this EN and the guarantee definition and conditions have to be written in the commercial contract