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6. Preheating process design
Based on the chemical analysis of the rail to be welded, we calculate its Carbon Equivalent CE; from this CE, a vertical line allows us to choose the appropriate energy ratio in J/mm 2 , depending on whether or not the rail is heat-treated; by following this ratio value horizontally and its intersection with the cross-section of the rail used (whose metric weight is known), we find, along a vertical line, the total electrical preheating energy (figure 12 ).
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Preheating process design
Weld finishing. Defectology
Bibliography
- (1) - NEBEL (K.) - Publication pour clients. - Schlatter AG (Suisse) (Nebel est l'ex manager de Railway Department).
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