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| Control of the Fine Inclusion in IF Molten Steel |
| LI Zhen1, 2,WANG Xiao-feng1,LIN Yang1,FEI Peng1,JIANG Mao-fa2 |
1. The Second Steelmaking Plant, Ansteel Co.， Ltd., Anshan 114014, Liaoning, China
2. School of Materials and Metallurgy, Northeast University, Shenyang 110016, Liaoning, China |
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Abstract The production of high purity steel was a major task for the iron and steel enterprises in the 21st century. Decreasing the total oxygen content and the inclusion removal was the key technique to produce the high purity IF steel. A novel fine inclusion removal technology due to the dispersed in-situ phase induced by the composite ball explosive reaction was put forward. A composite ball with the function was designed and prepared using a laboratory model batch type balling disc (at 12r/min) and the composite ball was fed at the end of RH refining. The results indicate that feeding composite ball in RH furnace is a novel technology and the inclusion in the molten steel can be removed effectively. The treatment time is less than 10 minutes. Compared with conventional inclusion removal technology, the number of the oxide inclusion can be decreased to a lower level and the inclusion size becomes finer. Using this novel technology, the total oxygen in the as-cast slab can approach to 7×10-6 and the steel production cost for per ton can be reduced by 5-10 yuan.
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Received: 04 January 2011
Published: 17 November 2011
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YU Hui-xiang, PAN Ming, YANG De-xin. Behavior of inclusions in ultra-low carbon IF steel during deoxidation and alloying process[J]. Iron and Steel, 2020, 55(6): 46-53. |
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XIAO Pengcheng，ZHAO Maoguo，ZHU Liguang，HE Shengping. Mathematical simulation and experiment on #br# solidification hook of IF steel[J]. Iron and Steel, 2019, 54(7): 49-55. |
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ZHU Rui-qi，SONG Xin-li，ZHENG Ai-qin，CHEN Rong-dong，JIA Juan，FAN Li-xia. Strain hardening and microstructure characteristic of high strength IF bearing phosphorus steel[J]. Iron and Steel, 2018, 53(2): 55-59. |
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2011, Vol. 46 
