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Welded rail joint A pull-apart on the Long Island Rail Road Babylon Branch being repaired by using flaming rope to expand the rail back to a point where it can be joined together. Most modern railways use continuous welded rail (CWR), sometimes referred to as ribbon rails or seamless rails.
Long welded rail was hard to install manually. An early demonstration of mechanised track-laying with two 600 ft (180 m) lengths of long welded rail took place on the Fighting Cocks branch in 1958. The two lengths were loaded on ten wagons, attached to the existing track by a steel rope and drawn back at 30 ft/min (9.1 m/min).
Rail stressing. Stressing is a rail engineering process. It is used to prevent heat and cold tension after installation of continuous welded rail (CWR). Environmental heat causes CWR to expand and therefore can cause the fixed track to buckle. Environmental cold can lead to the contraction of the fixed railway track causing brittleness and cracks.
The rail profile is the cross sectional shape of a railway rail, perpendicular to its length. Early rails were made of wood, cast iron or wrought iron. All modern rails are hot rolled steel with a cross section (profile) approximate to an I-beam, but asymmetric about a horizontal axis (however see grooved rail below).
Exothermic welding. Exothermic welding, also known as exothermic bonding, thermite welding (TW), [1] and thermit welding, [1] is a welding process that employs molten metal to permanently join the conductors. The process employs an exothermic reaction of a thermite composition to heat the metal, and requires no external source of heat or current.
t. e. The Hamersley & Robe River railway, majority-owned by Rio Tinto, and operated by its subsidiary Pilbara Iron, is a private rail network in the Pilbara region of Western Australia for the purpose of carrying iron ore. The network is larger than any other Australian heavy freight rail network in private ownership.
British Rail Departmental Wagons. British Rail departmental wagons are wagons used by British Rail and their successors Railtrack and Network Rail for departmental purposes. Many vehicles are named after aquatic creatures (including fish, mammals, birds and mythical creatures), these names started life as telegraphic codes. [1]
An improvement over fishplate rail connectors is directly bonding rails together using thermite or flash butt welding. In 1967, the Hither Green rail crash occurred on the Southern Region of British Railways when a rail fractured at its fishplate joint. The crash accelerated welded rail connections, with strict procedures on concrete and wooden ...