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 Acmtransformation 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:Surface other than the tread and the flange surface: not more than Fn1 defined by Formula (1),Cooling rate in a region in which cooling rate is slowest: not less than Fn2 defined by Formula (1), andTread and flange surface: not less than Fn2:Fn1=−5.0+exp5.651−1.427×C−1.280×Si−0.7723×Mn−1.815×Cr−1.519×Al−7.798×VFn2=0.515+exp−24.816+24.121×C+1.210×Si+0.529×Mn+2.458×Cr−15.116×Al−5.116×V
METHOD FOR PRODUCING RAIL WHEEL AND RAIL WHEEL
VERFAHREN ZUR HERSTELLUNG EINES SCHIENENRADS UND SCHIENENRAD
PROCÉDÉ DE FABRICATION D'UNE ROUE FERROVIAIRE ET ROUE FERROVIAIRE
16.09.2020
Patent
Elektronische Ressource
Englisch
Urban rail wheel steel and urban rail wheel prepared by using urban rail wheel steel
Europäisches Patentamt | 2020
|Engineering Index Backfile | 1929
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