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KAWASAKI STEEL GIHO
Vol.15 (1983) No.2
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Production of Low-Carbon Aluminum-Killed Steel for Hot and Cold Rolled Sheets via Q-BOP and Continuous Casting Route

•lã@˜a‹v(Kazuhisa Hamagami)@X‰º@@m(Hitoshi Morishita)@ŽR“c@ƒ•v(Sumio Yamada)@”n“c@@ˆê(Hajime Bada)@”“y@•¶•v(Fumio Sudo)@÷’J@•q˜a(Toshikazu Sakuraya)
—vŽ| :
º˜a56”N‚SŒŽ‚ÉC’ê‚«“]˜F‚Æ’¼Œ‹‚µ‚½Bç—t»“SŠ‘æ‚R˜A‘±’’‘¢‹@‚ª‰Ò“­‚ðŠJŽn‚µ‚½B–{‹@‚Å’’‘¢‚³‚ê‚éŽå—v|Ží‚ÍCˆê”Ê”M‰„C—≄”–|”‚¨‚æ‚Ñ‚ß‚Á‚«”–|”—p‘fÞ‚Å‚ ‚éB‚±‚ê‚ç‚̈ê˜A‚̘A’’Œü‚¯’ê‚«“]˜F|‚Ì—n»‚É‚ ‚½‚èCˆÈ‰º‚Ì‹Zp‚ðŠm—§‚µC•iŽ¿—ÇD‚ȃXƒ‰ƒu‚Ì’’‘¢‚ðs‚Á‚Ä‚¢‚éB(1) Žæ“ç“àArƒpƒuƒŠƒ“ƒOˆ—‚É‚æ‚é’á’Y‘f’áAlƒLƒ‹ƒh|‚¨‚æ‚Ñ’á’Y‘fAlƒLƒ‹ƒh|‚Ì—n» (2)‚‚¢Al•à—¯‚¨‚æ‚Ѹ“x‚Ì‚æ‚¢Al’²® (3)’á‚m|‚¨‚æ‚Ñ‚‚m|‚Ì—n» (4)’áSi|iiSij…0.01“j‚Ì—n»(5)‹É’á‚b|ii‚bj…25ppmj‚Ì—n»
Synopsis :
No.3 continuous caster at Chiba Works started its operation in April, 1981. This slab caster is one of only two which are connected with Q-BOP in the world. Main product of No.3 continuous caster is low carbon aluminum killed steels that were previously made via ingot casting. For producing low carbon aluminum killed steel by continuous casting connected with Q-BOP, the following techniques have been established. (1) Technique of producing low carbon aluminum killed steels with low hydrogen content by argon gas treatment. (2) Technique to precisely control aluminum content at high yield. (3) Technique of producing steels containing low and high nitrogen. (4) Technique of producing low silicon steels. ([Si]ƒ0.010%). (5) Technique of producing ultra low carbon steels. ([C]ƒ25 ppm).
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(c)JFE Steel Corporation, 2003