Abstract
The service performance and life of rail components are subjected to the following wear mechanisms: metal to metal or adhesive wear; fatigue; plastic flow and defects in rail and welds. Standard and head hardened rail grades made of high carbon steel as well as crossing made of austenitic manganese steels require permanent in field as well as workshop maintenance. Arc welding has been widely used for the repair and maintenance of rail components. This paper focuses on repairs of railway components using flux cored arc welding as a process with higher productivity, reliability, quality and increased service life of the repaired components. The paper addresses metallurgical aspects of the rail components welding, development of welding procedures, welding filler materials selection, heat input and temperature control, dilution and distortion control, weld, heat affected zone and parent material properties.
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