| BOF-LF-RH-CC流程钢液增氮控制研究 |
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| 引用本文： | 薛正良,吴映江,吴丽嘉,赵栋楠,王忠英,卢洪星.BOF-LF-RH-CC流程钢液增氮控制研究[J].武汉科技大学学报(自然科学版),2011,34(2). |
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| 作者姓名： | 薛正良 吴映江 吴丽嘉 赵栋楠 王忠英 卢洪星 |
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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. 江苏沙钢集团淮钢特钢有限公司,江苏,淮安,223002 |
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| 摘 要： | 通过对25Mn2和36Mn2V转炉冶炼钢种氮含量取样分析,得出各工序氮含量变化的规律,研究各工序增氮机制及氮含量控制措施。结果表明,增氮量从大到小的工序依次为大包至中包的长水口段、LF精炼段、转炉出钢段,RH真空处理段钢水氮含量有所下降;采用适当的终点高拉碳工艺可降低终点氮含量;采用高碱度低熔点预熔渣覆盖钢液面和控制LF吹氩强度可减少精炼前期吸氮和避免钢水被吹裸而引起的吸氮;适当延长极限真空度保持时间有利于进一步降低钢水中的氮含量。
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| 关 键 词： | 转炉 特殊钢 增氮 氮含量 |
Control of nitrogen absorption in BOF-LF-RH-CC steelmaking process |
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| Xue Zhengliang,Wu Yingjiang,Wu Lijia,Zhao Dongnan,Wang Zhongying,Lu Hongxing.Control of nitrogen absorption in BOF-LF-RH-CC steelmaking process[J].Journal of Wuhan University of Science and Technology(Natural Science Edition),2011,34(2). |
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| Authors: | Xue Zhengliang Wu Yingjiang Wu Lijia Zhao Dongnan Wang Zhongying Lu Hongxing |
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| Institution: | Xue Zhengliang1,Wu Yingjiang1,Wu Lijia1,Zhao Dongnan1,Wang Zhongying2,Lu Hongxing2 (1.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China,2.Huaigang Special Steel Co.,Ltd.,Jiangsu Shagang Group,Huaian 223002,China) |
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| Abstract: | The variation of nitrogen content in each process of converter steelmaking including converter blowing,argon blowing,LF refining,RH and continuous casting is obtained by analyzing the nitrogen contents of 25Mn2 and 36Mn2V in smelting.It is found that nitrogen absorption exists in the nozzle,LF refining,converter tapping with the amount decreasing in the order given above,and RH vacuum treatment can reduce nitrogen content.The causes of nitrogen absorption in each process are analyzed,and the measures for re... |
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| Keywords: | converter special steel nitrogen absorption nitrogen content |
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