Joining austenitic manganese steel to steel rail - by means of butt welding and using an austenitic steel intermediate piece which is aged

摘要

Austenitic Mn steel is joined to ferritic steel rail by first welding the ferritic steel rail to an intermediate part of austenitic or semi-austenitic steel, aging the welded joint until a sufficient number of carides have pptd. for stabilisation of the structure, and secondly welding the intermediate part to the austenitic Mn steel. For joining switch points to steel rails. Method permits joining switch points of austenitic Mn steel to ferritic steel rail by butt welding.