| 低碳钢头坯洁净度研究 |
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| 引用本文： | 彭其春,于学森,段雯君,熊伟,盛喜松,林利平,梁建伟.低碳钢头坯洁净度研究[J].武汉冶金科技大学学报,2012(3):164-168. |
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| 作者姓名： | 彭其春 于学森 段雯君 熊伟 盛喜松 林利平 梁建伟 |
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| 作者单位： | [1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [2]武汉钢铁集团公司,湖北武汉430080 |
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| 摘 要： | 采用氧氮分析、金相分析、大样电解分析、扫描电镜及能谱分析等,研究LD—Ar站—CC生产的低碳钢头坯不同浇铸长度处的洁净度变化规律,并与正常坯洁净度水平进行对比分析。结果表明,头坯中TO]和氮含量均随着浇铸长度的增加呈明显的下降趋势;头坯中显微夹杂物数量和大型夹杂物数量随着浇铸长度的增加大体都呈减少趋势;头坯中显微夹杂物主要来源于脱氧产物和二次氧化,大型夹杂物来源于二次氧化、结晶器卷渣、中间包卷渣和钢包引流砂;与正常坯洁净度相比较,头坯洁净度在浇铸长度大于3m以后与正常坯水平相一致。
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| 关 键 词： | 低碳钢 头坯 夹杂物 洁净度 |
Cleanliness of low carbon steel first slab |
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| Authors: | Peng Qichun Yu Xuesen Duan Wenjun Xiong Wei Sheng Xisong Lin Liping Liang Jianwei |
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| Affiliation: | 1. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China 2. Wuhan Iron and Steel Corporation, Wuhan 430080, China) |
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| Abstract: | By means of oxygen and nitrogen analyzer, metallographic examination, SLIME, SEM, EDS, etc, the cleanliness of low carbon steel first slab produced by LD-Argon-blowing station-CC was studied and compared with that of normal slab. The results show that, with the increase in casting length, the TO] and N] contents in the first slab decrease obviously and micro-inclusions and large inclusions in the first slab exhibit a general tendency of decreasing, too. The micro-inclusions mainly come from deoxidization and reoxidation products, while large inclusions from reoxidation products, slag entrapment in mould or tundish, and stuffing sand. The cleanliness of low carbon steel first slab is close to that of normal slabs when the casting length exceeds 3.0 m. |
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| Keywords: | low carbon steel first slab inclusion cleanliness |
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