| 汽车板用钢Si含量控制技术研究 |
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| 引用本文： | 汽车板用钢Si含量控制技术研究.汽车板用钢Si含量控制技术研究[J].山东科学,2017,30(2):50-54. |
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| 作者姓名： | 汽车板用钢Si含量控制技术研究 |
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| 作者单位： | 1.山东省科学院新材料研究所，山东 济南 250014；2.山东钢铁股份有限公司，山东 济南 250100 |
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| 摘 要： | 为解决国产汽车板用钢在冶炼过程中因钢水增硅导致的钢板性能下降的问题,本文对钢板冶炼各阶段Si含量的产生及变化情况进行了研究。影响各阶段钢水增硅的原因主要包括钢包渣碱度、钢水Al含量、中包渣和中包绝热板的材质等,通过选用Si质量分数小于1.5%的脱氧剂、采用钢包渣改质剂提高钢包渣的渣碱度、选用全碱性中间包或不含硅的大包保护渣等控制措施,能够将精炼-连铸过程中钢液增硅质量分数控制在0.01%以下。
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| 关 键 词： | 真空脱碳 渣碱度 Si含量 |
| 收稿时间： | 2016-09-06 |
The technical study on controlling Si content in car plate steel |
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| XIU Da-peng,NI Xiao-qing,ZHANG Xin-en.The technical study on controlling Si content in car plate steel[J].Shandong Science,2017,30(2):50-54. |
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| Authors: | XIU Da-peng NI Xiao-qing ZHANG Xin-en |
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| Institution: | 1.Advanced Materials Institute, Shandong Academy of Sciences, Jinan 250014, China; 2.Shandong Steel Limited Corporation, Jinan 250100, China |
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| Abstract: | Directed against the performance degradation problem of domestic car plate steel due to increasing Si in molten steel during the smelting process, in this paper, the changes in the production of Si content in each smelting stage were studied. The influence factors of the molten steel raising Si mainly include slag basicity, and aluminum content in molten steel, tundish slag and tundish insulation material, etc. By the measures of choosing deoxidizer with Si content less than 1.5%, improving slag basicity by using the modification agent, and adopting alkali tundish, the mass fraction of molten steel increasing Si was controlled below 0.01% during the refining and continuous casting process. |
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| Keywords: | Si content slag basicity vacuum decarburization |
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