METHOD COMPRISING CONTINUOUS CASTER PROVIDING STEP, MOLTEN STEEL INTRODUCTION STEP AND MOLTEN STEEL CASTING STEP TO MANUFACTURE ULTRA-LOW CARBON STEEL SLAB

PURPOSE: To provide an ultra-low carbon steel slab manufacturing method capable of obtaining a slab excellent surface quality event at a high casting rate of 2.0 m/min or more without any post-treatment process such as scarfing. CONSTITUTION: The method for manufacturing an ultra-low carbon steel sl...

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Bibliographic Details
Main Authors YAMAUCHI AKIRA, ITOYAMA SEIJI, UEHARA HIROHIDE, FUJIMURA TOSHIO, MATSUZAKI TAKESHI, SUZUKI MAKOTO, TADA CHIKASHI, MIKI YUJI
Format Patent
LanguageEnglish
Korean
Published 07.03.2005
Edition7
Subjects
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:PURPOSE: To provide an ultra-low carbon steel slab manufacturing method capable of obtaining a slab excellent surface quality event at a high casting rate of 2.0 m/min or more without any post-treatment process such as scarfing. CONSTITUTION: The method for manufacturing an ultra-low carbon steel slab comprises: a step of providing a continuous casting apparatus comprising a casting space having a short-side length D of about 150 to 240 mm, and a mold equipped with a submerged entry nozzle having at least one or more discharge spouts, wherein the discharge spouts have a lateral width d in such a way that a ratio of D/d is in a range of about 1.5 to 3.0; a step of introducing molten steel into the mold through the submerged entry nozzle; and a step of casting the molten steel at a casting rate of about 2.0 mm/min or more by the continuous casting apparatus to manufacture ultra-low carbon steel slab having a carbon content of about 0.01 mass% or less.
Bibliography:Application Number: KR20040068352