Patent ID: 8210019
Filing Date: 2012-07-03
Classification: B21B,C21D,C22C

Abstract:
1. A method for producing a pearlitic rail excellent in wear resistance and ductility by subjecting to at least rough hot rolling and finish hot rolling a billet comprising, in mass %, C: 0.65-1.20%, Si: 0.05-2.00%, Mn: 0.05-2.00%, and a remainder of iron and unavoidable impurities, which method comprises: conducting the finish hot rolling at a rail head surface temperature in a range of not higher than 900° C. to not lower than Ar subjecting the finish hot rolled rail head surface to accelerated cooling or spontaneous cooling to a temperature of 550° C. or less at a cooling rate of 2 to 30° C./seconds.