| 摘要 |
FIELD: metallurgy. SUBSTANCE: vacuumized steel is used for production of rail section 10, used as usual rail and as rail of switch point. The steel has at least 0.53 - 0.62 % of carbon, 0.65 - 1.1 % of manganese, 0.8 - 1.3 % of chromium. 0.05 - 0.11 % of molybdenum, 0.05 - 0.11 % of vanadium. no more than 0.02 % of phosphorus, iron - balance and other caused by heating additions. In the case rail section 10 is made as rail of rolled steel with pearlite structure. In case rail section is used as section of switch point, then rolled rail is used as initial material, that has improved martensite structure at least in area of rail head 16. EFFECT: improved quality of rails with martensite structure. |
