SOUDURE SANS APPORT DE METAL D'UN ACIER AU CARBONE AVEC UN ACIER ALLIE, PROCEDES D'OBTENTION ET APPLICATION AUX APPAREILS DE VOIES FERROVIAIRES

摘要

A weld seam for coupling a strongly alloyed steel part with a carbon steel part is characterised in that it includes, in cross-section, from one part to the other, a boundary line (10) separating the strongly alloyed steel or the remelted portion thereof (11) and the carbon steel (12), and in that a ferrite barrier (121, 122) is formed in the carbon steel (12). The invention is particularly useful for making railway switches.