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KAWASAKI STEEL TECHNICAL REPORT
No.8 ( September 1983 )

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Production of Low-Carbon Aluminum-Killed Steel for Hot and Cold Rolled Sheets by Q-BOP-Continuous Casting Process

Kazuhisa Hamagami, Hitoshi Morishita, Sumio Yamada, Hajime Bada, Fumio Sudo, Toshikazu Sakuraya
Synopsis :
No.3 continuous caster at Chiba Works has started its operation in April, 1981. This slab caster is one of the two which are connected with the Q-BOP process in the world. Main product of No.3 continuous caster is low-carbon aluminum-killed steel that was previously made by ingot casting. For producing low-carbon aluminum-killed steel by continuous casting connected with Q-BOP, the following techniques were established. (1) Production technique of low-carbon aluminum-killed steel which has low hydrogen content by argon gas treatment. (2) Aluminum control technique which is very accurate and gives high yield of aluminum. (3) Production technique of low and high nitrogen containing steel. (4) Production technique of low silicon steel. (Siƒ0.010%) (5) Production technique of ultra low-carbon steel. (Cƒ25ppm)
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