| 摘要 |
FIELD: metallurgy.SUBSTANCE: rail from high-carbon pearlite steel, which has increased ductility, which contains the following components, wt %, is proposed: C: more than 0.85 to 1.40%, Si: 0.10%-2.00%, Mn: 0.10%-2.00%, Ti: 0.001%-0.01%, V: 0.005%-0.20%, N: less than 0.0040%, Fe and inevitable impurities are the rest. Contents of Ti and V meet the following formula: 5?[V(wt %)]/[Ti(wt %)]?20. Head part of the rail has pearlite structure. Method for obtaining pearlite rail involves hot rolling of bloom, finishing rolling of the hot rolling stage under conditions when temperature of finishing rolling FT, °C is established in the following range: T-25?FT?T+25. T=850+35×[C]+1,35×10x[Ti]+180×[V].EFFECT: rails have increased ductility and wear resistance.3 cl, 10 dwg, 5 tbl, 15 ex |
