Weld finishing. Defectology
Electric flash butt welding of railways rails

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Weld finishing. Defectology
Electric flash butt welding of railways rails

Author : Raymond DEROCHE

Review date: January 12, 2026 | Lire en français

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7. Weld finishing. Defectology

Finishing the welds consists of three simple steps:

  • slicing the bead (figure 8 );

  • straightening of the weld zone over 1.50 m on either side of the welded joint (figure 13 ) by manual pressing controlled by laser passage (in TGV rail, the weld peak must not exceed 0.3 mm over 3 m);

  • finish-grind the headstock to ensure shock-free wheel travel (figure 14 ).

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