Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Reexamination Certificate
2011-08-16
2011-08-16
Wyszomierski, George (Department: 1733)
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
C075S010630, C075S508000, C148S541000, C148S542000, C148S547000, C164S476000
Reexamination Certificate
active
07998237
ABSTRACT:
Disclosed are a method and an installation for producing steel products (1) having an optimum surface quality, especially extremely low carbon contents (UCL steel or IF steel), nitrogen contents, total oxygen contents, high-strength or stainless steel qualities. According to the invention, the liquid steel is cast into a thin slab (5a) from a process route (10, 11, 12, or13) that is selected according to the desired final structure (9) based on an electric-arc furnace (2b), is descaled, cut into billets (15) having a partial length, optionally descaled once again, subjected to final descaling downstream from a holding furnace (16), milled in a finishing mill train (6a), rolled up in a rolling station (20) located downstream from the last finishing mill stand (19) or downstream from a cooling section (21), and the final structure (9) is adjusted in the cooling section (21) according to the desired steel quality by cooling on a run-out roller table (22), whereupon the rolling stock (1a) is completely rolled up in a second rolling station (23).
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Hensger Karl-Ernst
Pleschiutschnigg Fritz-Peter
Rosenthal Dieter
Tembergen Dieter
Teworte Rainer
Lucas & Mercanti LLP
McGuthry-Banks Tima M
SMS Siemag Aktiengesellschaft
Stoffel Klaus P.
Wyszomierski George
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