| 高拉速吹氩板坯连铸结晶器内的卷渣机理研究 |
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| 引用本文： | 张胜军,朱苗勇,张永亮,郑淑国,程乃良,宋景欣.高拉速吹氩板坯连铸结晶器内的卷渣机理研究[J].金属学报,2006,42(10):1087-1090. |
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| 作者姓名： | 张胜军 朱苗勇 张永亮 郑淑国 程乃良 宋景欣 |
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| 作者单位： | 1. 东北大学材料与冶金学院,沈阳,110004
2. 上海宝钢集团梅山钢铁股份有限公司,南京,210039 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 基于相似理论，利用物理模型研究了高拉速吹氩条件下结晶器内的卷渣行为，考察了工艺操作参数对结晶器内液面波动和卷渣行为的影响．研究结果表明：在结晶器水口吹气条件下，大气泡对渣层的卷混是引起卷渣的主要方式，其次是漩涡卷渣，通常认为的剪切卷渣则不易发生．此外，本研究还对各种卷渣行为进行了分析，揭示其内在机理，提出了避免卷渣的措施．
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| 关 键 词： | 连铸结晶器 高拉速 吹氩 卷渣机理 物理模拟 |
| 文章编号： | 0412-1961（2006）10-1087-04 |
| 收稿时间： | 2006-03-07 |
| 修稿时间： | 2006-03-072006-04-30 |
STUDY ON MECHANISM OF ENTRAPMENT IN SLAB CONTINUOUS CASTING MOULD WITH HIGH CASTING SPEED AND ARGON BLOWING |
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| ZHANG Shengjun,ZHU Miaoyong,ZHANG Yongliang,ZHENG Shuguo,CHENG Nailiang,SONG Jingxin.STUDY ON MECHANISM OF ENTRAPMENT IN SLAB CONTINUOUS CASTING MOULD WITH HIGH CASTING SPEED AND ARGON BLOWING[J].Acta Metallurgica Sinica,2006,42(10):1087-1090. |
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| Authors: | ZHANG Shengjun ZHU Miaoyong ZHANG Yongliang ZHENG Shuguo CHENG Nailiang SONG Jingxin |
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| Abstract: | A physical model was established to study the mechanism of molten slag behavior in slab continuous casting mould with high casting speed and argon blowing, and the effects of operation parameters on the liquid surface level oscillation and the slag entrapment were investigated. The results showed that the slag entrapment was mainly caused by the turbulent large bubbles at the interface of slag and molten steel in mould with high casting speed and gas bubbling, and the vortex at the surface also was a way to cause the entrapment, but no entrapment occurred due to high shear stress that was considered the main reason previously. In addition, the behavior and mechanism of typical slag entrapment were discussed, and some measures to eliminate slag entrapment were also presented. |
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| Keywords: | continuous casting mould high casting speed argon blowing mechanism of en trapment physical modeling |
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