Metallurgical Processes and Practice with 70 t Hi-impedance EAF to Produce Steels for Nuclear Class Carbon Steel Seamless Tubes

Elaborated in the essay are the aspects concerning the metallurgical processes with the 70 t hi-impedance EAF to produce TU42C and TUE250B carbon steels for the nuclear class seamless tubes,involving melting,LF refining,VD treatment and round billet casting. Special quality requirement for cleanness of the said steels are analyzed. Accordingly,Technical measures for control of the above mentioned processes are determined to ensure the mechanical properties of the final tubular products. The tubes as made with the said processes are in full compliance with applicable technical specification for the nuclear class carbon steel tubular products.