METHOD FOR PRODUCING RAILWAY WHEEL AND RAILWAY WHEEL
DRIVE
April 2, 2020
A railway wheel in which formation of pro-eutectoid cementite is suppressed is stably produced. After heating an intermediate product containing, in mass %, C: 0.80 to 1.15% to a temperature not less than Atransformation point, the intermediate product is cooled such that the cooling rate (° C./sec) in a range from 800 to 500° C. satisfies the following conditions: 1=−5.0+exp(5.651−1.427×C−1.280×Si−0.7723×Mn−1.815×Cr−1.519×Al−7.798×V) (1) 2=0.515+exp(−24.816+24.121×C+1.210×Si+0.529×Mn+2.458×Cr−15.116×Al−5.116×V) (2)
Discussion in the ATmosphere