| VOD底吹氮精炼高氮钢P91的工艺实践 |
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| 引用本文： | 郭畅,吕文俊,周立新,张志成,余亚平,柯林.VOD底吹氮精炼高氮钢P91的工艺实践[J].特殊钢,2011,32(3):48-50. |
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| 作者姓名： | 郭畅 吕文俊 周立新 张志成 余亚平 柯林 |
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| 作者单位： | 湖北新冶钢有限公司,黄石,435001 |
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| 摘 要： | 锅炉用铁素体耐热钢P91（%:0.08～0.12C、8.0～9.5Cr、0.85～1.05Mo、0.18～0.25V、0.06～0.10Nb、0.030～0.070N）的冶炼工艺流程为20 t EBT EAF+10 t感应炉混炼-LF-VOD（吹氮）-3 t锭模铸。通过低真空（～26 000 Pa）底吹N气搅拌使脱氧剂、造渣材料充分快速与钢液反应,使N]从（80～90）×10-6增至（120～140）×10-6,然后底吹氮以（9～15）×10-6/min的增氮速率将N]增至620×10-6,钢材中的N含量约为500×10-6,达到标准要求。
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| 关 键 词： | 高氮钢P91 VOD 底吹氮精炼 |
Practice of Process for VOD Nitrogen Bottom-Blown Refining High Nitrogen Steel P91 |
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| Guo Chang,Lv Wenjun,Zhou Lixin,Zhang Zhicheng,Yu Yaping,Ke Lin.Practice of Process for VOD Nitrogen Bottom-Blown Refining High Nitrogen Steel P91[J].Special Steel,2011,32(3):48-50. |
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| Authors: | Guo Chang Lv Wenjun Zhou Lixin Zhang Zhicheng Yu Yaping Ke Lin |
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| Affiliation: | Guo Chang,L(u|¨) Wenjun,Zhou Lixin,Zhang Zhicheng,Yu Yaping and Ke Lin (Hubei Xinyegang Co Ltd,Huangshi 435001) |
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| Abstract: | The steelmaking process flow sheet of ferrite heat resisting steel P91 for boiler（%;0.08～0.12C,8.0～9.5Cr,0.85～1.05Mo,0.18～0.25V,0.06～0.10Nb,0.030～0.070N） is 20 t EBT EAF + 10 t induction furnace mixing melting- LF-VOD（nitrogen blowing） - 3 t ingot mold casting.With bottom blowing nitrogen gas stirring in low vacuum （～26 000 Pa） to make sufficient and quick reaction between deoxidizer,slag-making materials and liquid,theN]increases from（80～90）×10-6 to（120～140）×10-6,then by nitrogen bottom-blowing with（9～15）×10-6/min increasing rate of N content in liquid,theN]shall increases to 620×10-6,and the nitrogen content in steel products is about 500×10-6 to meet the requirement of standard. |
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| Keywords: | High Nitrogen Steel P91 VOD Bottom-Blowing Nitrogen Refining |
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