| 摘要 |
In order to obtain a fine-lamellar perlite structure in the edge region of the heads of rails ( 1 ), especially hot-rolled rails for carriageways or railways, by specific thermal treatment during cooling from the rolling heat without the formation of bainite, precooling ( 12 ) occurs in order to achieve a core temperature of approximately 750-850° C., and the temperature of the more intensively cooled edge region is raised by intermediate heating ( 13 ) to at least said core temperature and finally cooled ( 14 ). |
