RAIL THERMAL TREATMENT PROCESS

摘要

A process is disclosed for thermally treating rails, in particular rails heads, according to which the rails are cooled in a synthetic additive-containing cooling medium from temperatures above 720 C. In order to prevent the stem of the rail from hardening while maintaining optimum cooling speeds for the rail head, immersion in the cooling medium is continued until a surface temperature between 450 C and 550 C is obtained after drawing the submerged areas of the rails without temperature equalization over the whole cross section.