Objects, in particular locomotive wheel tyres and rails, having enhanced resistance to surface damage due to rolling and/or frictional phenomena, in particular formation of grooves or short ripples in running operation

摘要

Objects produced from an essentially perlitic steel alloy which essentially contains between 0.60 and 0.75% of carbon, between 0.40 and 0.75% silicon, between 0.60 and 1.20% of chromium, up to 0.20% of molybdenum, up to 0.10% of vanadium and between 0.50 and 0.80% of manganese, and whose Ac 1 temperature of incipient austenitisation is at least 743 DEG at a heating rate of up to about 4 DEG C/minute. IMAGE