| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.26 ( June 1992 ) Artificial Intelligence and Wire Rods and Steel Bars ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Mass Production of Ultra-low Carbon Steel by KTB Method Using Oxygen Top Blowing in the Vacuum Vessel Kyoichi Kameyama, Hiroshi Nishikawa, Makoto Aratani, Ryuichi Asaho, Nozomu Tamura, Koji Yamaguchi |
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Synopsis : Kawasaki Steel has developed a new top oxygen blowing degassing method in the vacuum vessel, the KTB method, which is extremely effective in promoting the decarburization reaction rate in the vacuum vessel, lowering tap temperature, and enhancing productivity and quality in ultra-low carbon steel production. The KTB method, in which oxygen is blown onto the surface of molten steel by a top lance in the vacuum vessel during decarburization treatment, is effective both promoting the decarburization reaction in the initial stage of the vacuum decarburization treatment and in providing heat compensation during degassing treatment. The promotion of the decarburization reaction has been demonstrated by a decarburization reaction model considering the simultaneous mass transfer of kCl and kOl. The analysis of the heat transfer model under vacuum pressure has proved that post-combustion and adiabatic effects provide great amount heat compensation. |
| TextiPDF: 8p./318kbj |