Apparatus for improving service life of thermite rail welds

Details Apparatus for improving service life of thermite rail welds Apparatus for improving service life of thermite rail welds

1993-09-15

1995-01-03

Dean, Richard O.

Metallurgical apparatus

Thermite reaction vessel

266274, 266280, 266286, 164 54, 432225, C21B 1500

Patent

active

053779592

ABSTRACT:
In the heat treatment in the field of a thermite weld between rail ends, the rail ends and the weld are enclosed within a containment filled with an aluminothermic material mixture. The mixture is ignited and the rail ends and the thermite weld are heat-treated for a given period. After the given period, the aluminothermic reaction products and the containment are removed, and an air quench unit is placed about the weld and rail ends and compressed air is directed at the weld and rail ends for a given time period. After the removal of the air quench unit, the weld is allowed to cool to ambient temperature.

REFERENCES:
patent: 1793047 (1931-02-01), Brewitt
patent: 3113359 (1963-12-01), Burke
patent: 3620291 (1971-11-01), Aillant-sur-Tholon
patent: 4830611 (1989-05-01), Guntermann et al.

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