Manufacture of Superclean 3-3.5 NiCrMoV Steels for Gas Turbine Components

摘要

Facilities for the manufacture ofsuperclean steels·Melting of 42 heats in a 125-telectric arc furnace ·Secondary metallurgy in theladle ·Casting of forging ingots of 30-105t weight ·Mm,Si, Al, P, S, Sn, As and Sb contents duringsteelmaking ·Embrittlement factors J, J', X andK ·Embrittlement factors and toughness properties ofsuperclean steel and of conventional steel at room temperature.