| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.32 ( March 1995 ) Ironmaking Technology, Secondary Refining, and Center-Segregation Control with Forging in CC ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Concept of Continuous Forging Process and Experimental Analysis of Forged Blooms Shinji Kojima, Hisakazu Mizota, Koichi Kushida |
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Synopsis : With a view to substantially improving centerline segregation, the authors developed the continuous forging process, based on a completely new solidification mechanism. In the new method, the unsolidified bloom is subjected to heavy reduction at the stage of final solidification by anvils installed in the strand line. The effectiveness of the method has been confirmed using commercial continuous bloom casters, where it was found that centerline segregation can be eliminated and the segregation ratio of carbon C/C0 can be controlled to an aimed value between 0.6 and 1.0 by choosing an appropriate ratio of reduction to the unsolidified thickness. It was also found that semi-macro segregation can be reduced and internal quality is quite stable in spite of deviations in casting conditions during actual operation. |
| TextiPDF: 8p./401kbj |