The invention discloses a
bainite steel wheel for a
rail traffic D-series high-speed
train and a manufacturing method thereof. Chemical components of the
bainite steel wheel comprise 0.05-0.30% of C,0.10-1.50% of Ni, 0.01-1.20% of Cr, 0.70-2.10% of Mn, 0.20-1.00% of Si, 0.01-1.00% of W, 0.05-0.60% of Mo, 0.01-0.80% of Cu, 0.01-0.20% of V, 0.001-0.20% of Nb, 0.0001-0.0350% of B, 0.001-0.040% of RE, smaller than or equal to 0.020% of P, smaller than or equal to 0.020% of S and the balance Fe and inevitable residual elements, and the sum of Mn and Cr is larger than or equal to 2.0% and smaller than or equal to 3.0%. According to the
bainite steel wheel, the novel C-Ni-Mn-Cr-Mo
alloy design
system and the alloying principle are adopted, after the wheel is formed and subjected to advanced heattreatment, a rim obtains a no-
carbide bainite structure, and the wheel has excellent comprehensive mechanical performance, anticorrosion performance and service performance, and especially has the beneficial effects of being high in strength, high in
hardness, high in
toughness, high in low-temperature
toughness, high in wheeltrack
rolling contact fatigue resisting performance (RCF), high in heatcrack resisting performance and the like.