| 摘要 |
A method of rolling steel rails comprising: Providing a rail blank (5), the blank comprising a foot portion (2), a head portion (3) and a web portion (4) connecting the foot portion to the head portion; Finishing the rail blank to form a steel rail (6) in a multi-stand continuous tandem finishing mill, the finishing mill comprising at least three four-roll universal stands (U1, U2 and U3) and at least two two-roll edger stands (E1, E2), wherein the universal stands contain a vertical roll for forming the lower foot portion (2a) and a vertical roll for forming the head portion (3a) of the rail, and two shaped horizontal rolls for forming the sides (6a, 6b) of the rail and particularly the web portion (4a, 4b) of the rail, wherein the rail blank is passed only once through said finishing mill, and wherein at least the vertical rolls in all universal stands for forming the lower foot portion (2a) are flat rolls, and wherein at least one of universal stands contains a flat vertical roll for forming the head portion (3a). Said method employs a rolling mill in order to produce a rail. |
