Method for manufacturing high strength rail of excellent weldabi

Details Method for manufacturing high strength rail of excellent weldabi Method for manufacturing high strength rail of excellent weldabi

1980-10-30

1983-03-08

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148 124, C21D 800, C21D 904

Patent

active

043759955

ABSTRACT:
A method for manufacturing high strength rail having excellent weldability comprises subjecting a steel rail of specific composition to specific heat treatment conditions at the surface layer portion of the head thereof, to impart high strength to the rail and to assure that the welded portion as well as the welded heat affected zone are free from deterioration caused by the welding process. The heat treatment conditions include a cooling rate which is substantially equivalent to that in a conventional welding process so as to impart high tensile strength to the treated portion of the rail.

REFERENCES:
patent: 2882191 (1959-04-01), Van Swaal
patent: 3519497 (1970-07-01), Pomey
patent: 3622407 (1971-11-01), Niculescu
patent: 3726724 (1973-04-01), Davies et al.
patent: 3846183 (1974-11-01), Henry
patent: 3846184 (1974-11-01), Melloy et al.
patent: 4008078 (1977-02-01), Flugge et al.
patent: 4082577 (1978-04-01), Heller

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