Railroad rail and method and system of rolling the same by conventional or continuous rolling process
AssigneeCF&I Steel, L.P.
InventorsRobert L. Cryderman, John C. Winkley
Life of this patent
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Abstract
A railroad rail produced by rolling a substantially round bloom, together with a process and system for manufacturing the same. The round bloom may be produced by continuous casting methods. The bloom is initially rolled into a substantially rectangular shape and then into a rail. The rolling process may be continuous and in-line to allow for the production of very long seamless rails.
Claims13
A method of manufacturing a railroad rail, comprising:
- casting a billet;
- the billet having a cross-section with any corners more than about 2 inches in radius, and rolling said billet into said rail using a plurality of rolling stations, wherein said rail is at least about 1,440 feet long.
A method of manufacturing a railroad rail, comprising:
- casting a billet, the billet having a cross-section with any corners more than about 2 inches in radius;
- allowing said billet to at least partially cool;
- reheating the billet to a uniform temperature;
- and rolling the billet into said rail using a plurality of rolling stations wherein said rail is at least about 1,440 feet in length.
A method of manufacturing a railroad rail, comprising:
- casting a billet, the billet having a cross-section with any corners more than about 2 inches in radius, and rolling said billet into said rail using a plurality of rolling stations, wherein said rail is at least 200 feet long and wherein said rolling step is by moving a shape in a single direction through a plurality of in-line rolling stations.
A method of manufacturing a railroad rail, comprising:
- casting a billet, the billet having a cross-section with any corners more than about 2 inches in radius, and rolling said billet into said rail using a plurality of rolling stations, wherein said rail is at least about 500 feet long.
A method of manufacturing a railroad rail, comprising:
- heating a substantially round billet to a uniform rolling temperature;
- placing the substantially round billet in a rolling mill having a plurality of rolling stations;
- and rolling said substantially round billet into a substantially rectangular shape;
- and rolling said substantially rectangular shape into a railroad rail using said plurality of rolling stations.
Dependencies are inferred from the claim text.