Calculate thermite weld charge size, crucible volume, and preheating requirements for exothermic welding of rails and conductors
Input Parameters
Results
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Thermite Charge
kg
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Steel Yield
kg
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Preheat Temperature
C
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Min Crucible Volume
cm3
Note: Thermite welding per AWS/AREMA standards. Reaction produces molten steel at ~2500C. Preheat prevents thermal shock and moisture issues.
Reference
Thermite Welding (Fe2O3 + 2Al -> 2Fe + Al2O3):
Weld volume = joint area x gap
Steel yield ~ 45-55% of thermite charge weight
Reaction temperature ~ 2500C
Charge includes excess for collar and riser