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HIGH SPEED TECHNOLOGY INFRASTRUCTURE ENGINEERING FOR HIGH SPEED

eurailSpeed 2005. Milan, 8 november. HIGH SPEED TECHNOLOGY INFRASTRUCTURE ENGINEERING FOR HIGH SPEED. What technologic choice for the high speed infrastructure?. The point of view of a rail producer. eurailSpeed 2005. Milan, 8 november. Quality requirements for high speed rails:

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HIGH SPEED TECHNOLOGY INFRASTRUCTURE ENGINEERING FOR HIGH SPEED

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  1. eurailSpeed 2005 Milan, 8 november HIGH SPEED TECHNOLOGY INFRASTRUCTURE ENGINEERING FOR HIGH SPEED What technologic choice for the high speed infrastructure? The point of view of a rail producer

  2. eurailSpeed 2005 Milan, 8 november • Quality requirements for high speed rails: • Low inclusions content • Low gas content • Strict control of straightness and profile • Absence of harmful defects Standardization of rails production cycle, aiming, for the whole production, to the quality level corresponding with rails intended for the most critical applications

  3. eurailSpeed 2005 Milan, 8 november To obtain the goal New investments Production route Advanced hot and cold inspection techniques

  4. Hot metal Tapping HMD Oxygen Converter LF VD Continuous Castier eurailSpeed 2005 Milan, 8 november STEEL PRODUCTION CYCLE • DESULPHURIZATION • Manufacturer: SMS Demag (1999) • Injection of lime and magnesium by submerged lance • Mean time of the process: 20 min • Typical S content: • before treatment 0.045% • after treatment 0.010% • TANK DEGASSING • Manufacturer: SMS Demag (2000/2002) • Min attainable vacuum: 0.7 mbar • Mean treatment time: 20 min • Typical H2 after treatment: 1.5 ppm • AMEPA

  5. eurailSpeed 2005 Milan, 8 november RAIL MILL LAY-OUT

  6. eurailSpeed 2005 Milan, 8 november REHEATING FURNACE: Italimpianti (2001) • Revamped in 2001 • Walking beam type • Tmean blooms at the end = 1290 °C • Equipped with a matematichal model to supply information about the thermal state of the blooms to the control logic

  7. eurailSpeed 2005 Milan, 8 november HIGH TEMPERATURE DEFECTS CONTROL SYSTEM: Tecnogamma (2004) • Main characteristics • Rail T=800-1200 °C • Cameras nr.=6 • Scanning field= 400 mm • Acquisition frequency=10 frame/sec

  8. eurailSpeed 2005 Milan, 8 november HI-PROFILE, HIGH TEMP. PROFILE CONTROL SYSTEM: Danieli (2001) • Main characteristics • Rail Tmax=1100 °C • Accuracy=0.1 mm • Acquisition frequency 30data/sec

  9. eurailSpeed 2005 Milan, 8 november AUTOMATIC STRAIGHTNESS CONTROL: Tecnogamma (2003) • Main characteristics • Lenght of acquisition: 3m • nr. of cameras: 20 • Resolution = 0.05 mm • Vmax = 2 m/sec

  10. eurailSpeed 2005 Milan, 8 november AUTOMATIC PROFILE CONTROL: Tecnogamma (2003) • Main characteristics • Lenght of acquisition: 3m • nr. of cameras: 4 • Resolution = 0.05 mm • Vmax = 2 m/sec

  11. Quality controls system for rails reheatingfurnace dimensions surface internal rail mill dimension and shape (automatic + manual) surface defects (automaticinspection) cooling bed metallurgical and technological properties Rollerstraightness straightness (visual + gauges) coldsaw automatictesting station automaticinternal US inspection automatic surface (eddy current) inspection inspectionbed dimension and shape straightness surface inspection (visual) storage eurailSpeed 2005 Milan, 8 november

  12. eurailSpeed 2005 Milan, 8 november PRODUCT APPROVALS Lucchini Piombino has been qualified by RFI according to EN 13674-1 In accordance to Council Directive 96/48/EC, rail 60E1 and 54E1, certified by RINA, can be used in trans-European high speed rail system.

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