| 摘要 |
In order to improve the heating efficiency, to reduce the fuel consumption, to reduce the labor time and to improve the quality of the material joint in the region of a thermit welded joint between two rail ends, it is proposed that, immediately after the fusion welding, in particular using the residual heat which is still present, the joint region, that is to say the fused structure including the structure of the heat affected zones which are adjacent on both sides, be subjected to normalization treatment. A burner arrangement for carrying out this method is characterized by a symmetrical distribution of burners (18, 11, 20, 21) with respect to a longitudinal center plane (22) and a transverse center plane (14), two burners being intended and arranged for treating the head flanks in the region of the fused structure, and in each case four burners being intended and arranged for treating the rail foot (2) in the region of the heat affected zones. The heat treatment is carried out using different cooling rates for the rail head (7) and for the rail foot (2) on the basis that the result is a structure which has a running surface with improved wear resistance and a rail foot (2) which has increased ductility.
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