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OwnerMasafumi Miyazaki, Akihiro Matsuzawa +8inventors
InventorsMasafumi Miyazaki, Akihiro Matsuzawa, Katsuhiro Sasai, Wataru Ohashi, Yasuhiko Ohtani, Katsunori Yamada, Masahiro Doki, Go Hirata, Yoshiaki Kimura, Hajime Hasegawa
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A method of production of an ultralow carbon cast slab characterized by adding Ti to molten steel decarburized to a carbon concentration of 0.01 mass % or less, further adding at least one of Ce, La, and Nd, and using an immersion nozzle to inject the above molten steel from a tundish to a casting mold for continuous casting while maintaining a flow rate of Ar gas blown from any location in a range from a tundish upper nozzle to discharge ports of said immersion nozzle at 3 Nl (normal liter)/min or less.
A method of production of an ultralow carbon cast slab characterized by adding Ti to molten steel decarburized to a carbon concentration of 0.01 mass % or less, further adding at least one of Ce, La, and Nd, and using an immersion nozzle to inject the above molten steel from a tundish to a casting mold for continuous casting while maintaining a flow rate of Ar gas blown from any location in a range from a tundish upper nozzle to discharge ports of said immersion nozzle at 3N1 (normal liter)/min or less.
Dependencies are inferred from the claim text.