Process for modifying the section of a railway rail and rail thu

Details Process for modifying the section of a railway rail and rail thu Process for modifying the section of a railway rail and rail thu

1995-01-30

1997-03-18

Larson, Lowell A.

Metal deforming

Process

With attenuation, thickening, elongating or shortening of...

723426, 7234294, 72356, 238148, 238150, B21D 3100

Patent

active

056112343

ABSTRACT:
The process consists in increasing the height of the rail to the detriment of the thickness of the web (16) and of the flange (18). Firstly, the thickness of the upper part of the web (16) below the head (14) is reduced by machining and, next, the rest of the web (16) and the flange (18) of the rail (10) are heated up and deformed by forging. This process avoids hardness modifications of the running surface of the rail.

REFERENCES:
patent: 1394708 (1921-10-01), Braine
patent: 1924838 (1933-08-01), Daley
patent: 1951727 (1934-03-01), Daley
patent: 2075842 (1937-04-01), George
patent: 2170859 (1939-08-01), Frickey
patent: 2305711 (1942-12-01), Jones et al.
patent: 3133343 (1964-05-01), Kratkay
patent: 3356276 (1967-12-01), Robinson, Jr. et al.
patent: 3623207 (1971-11-01), Zoso et al.

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