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WELDING OF HEAD HARDENED RAILS WIDE GAP JOINTS COMBINATION JOINTS OF DIS-SIMILAR RAIL SECTONS
WELDING OF 110UTS ALLOY STEEL RAILS COMPRESSED AIR-PETROL PREHEATING AUTOMATIC TAPPING THIMBLE


WELDING OF 110UTS (1100 GRADE) ALLOY STEEL RAILS

In the 1980's the Indian Railways imported 60Kg chrome manganese and 52Kg chrome vanadium rails for the Metro Railways, Suburban Railways and other heavy traffic sections. These rails are sensitive to heat as sudden cooling of the joint may result in cracks or fractures.

Thermit has developed techniques for welding the 110UTS alloy steel rails involving the following steps:

The welding operation is performed according to the SKV process till the trimming of excess metal.
Thereafter the joint and heat affected zones are covered by a special hood for 20 minutes so that the joint is cooled gradually.



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