This system is designed for pre-heating the rail ends for welding by the alumino-thermic process. The joint is preheated for a moderately low period thereby achieving better metallurgical characteristics by minimizing the width of the heat affected zone.
Preheating time required for SKV Process
UIC 60 Kg/m
4 ½ minutes
3 ½ minutes
Maximum Air Pressure
L = 1250, W = 500, H = 950 mm.
Operating pressure for preheating
0.15 to 0.2 bar
Special Feature & Advantages
Human error is eliminated as the system is mechanized.
System requires considerably less time for preheating of rail ends and thereby reduces the block time.
Improved metallurgical characteristics are created as the heat affected zone in the weld is narrowed.
System requires petrol as fuel, hence oxygen and propane cylinders are not required to be carried to site.