| 亚包晶钢板坯连铸结晶器液面波动与控制 |
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| 引用本文： | 李阳,黄泉金,张小欢,张家泉,赵和明,赖朝彬.亚包晶钢板坯连铸结晶器液面波动与控制[J].钢铁,2011,46(8):43-47. |
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| 作者姓名： | 李阳 黄泉金 张小欢 张家泉 赵和明 赖朝彬 |
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| 作者单位： | 1. 北京科技大学冶金与生态工程学院， 北京 100083 2. 新余钢铁集团有限公司， 江西 新余 338001 |
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| 摘 要： | 针对亚包晶钢板坯连铸结晶器内经常出现的严重液面波动问题，从机制认识出发，进行了工艺试验研究。指出液面驻波和二冷区坯壳的非稳定鼓肚是导致结晶器液面波动的主要因素。通过调整亚包晶钢的化学成分，使其碳含量与实际包晶点的计算值接近，并适度增加二冷前区的冷却强度，可有效抑制液面波动。结果表明，亚包晶钢连铸突出的液面波动是因为其不均匀坯壳生长所造成的非稳定鼓肚。亚包晶钢实际碳含量距包晶点越近，相变收缩比例越小，坯壳厚度不均匀度以及后续坯壳非稳定鼓肚量的变化也将越小，有助于减小液面波动程度。
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| 关 键 词： | 结晶器液面波动 亚包晶钢 非稳定鼓肚 |
| 收稿时间： | 2010-09-14 |
Mold Level Fluctuation and Its Control for Slab Casting of Hypo-Peritectic Steels |
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| LI Yang,HUANG Quan-jin,ZHANG Xiao-huan,ZHANG Jia-quan,ZHAO He-ming,LAI Chao-bin.Mold Level Fluctuation and Its Control for Slab Casting of Hypo-Peritectic Steels[J].Iron & Steel,2011,46(8):43-47. |
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| Authors: | LI Yang HUANG Quan-jin ZHANG Xiao-huan ZHANG Jia-quan ZHAO He-ming LAI Chao-bin |
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| Affiliation: | （1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. Xinyu Iron and Steel Cooperation, Xinyu 338001, Jiangxi, China） |
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| Abstract: | The mechanism of the mold level fluctuation,especially for the hypo-peritectic steels,was investigated along with production tests.It is pointed out that the standing waves and unsteady bulging during slab casting are the dominant factors which contribute to the formation of mold level fluctuation.The popular mold level fluctuation of HP steels can be effectively depressed through the modification of the chemical composition together with the increasing cooling intensity for the earlier stage of the seconda... |
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| Keywords: | mold level fluctuation hypo-peritectic steel unsteady bulging |
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