| 连铸方坯疏松缺陷的分析与控制 |
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| 引用本文： | 安志广,李学民,王子然. 连铸方坯疏松缺陷的分析与控制[J]. 河北冶金, 2010, 0(3): 53-56 |
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| 作者姓名： | 安志广 李学民 王子然 |
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| 作者单位： | 河北钢铁集团,唐山钢铁公司,第二钢轧厂,河北,唐山,064000 |
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| 摘 要： | 介绍了连铸方坯疏松缺陷形成的机理,对不同钢种采取拉速限制措施、优化配水制度、合理控制H08终点氧位、浇注过程中中间包钢水过热度限制在20～30℃之间、气水雾化二次冷却等措施,铸坯中心疏松一般可控制在0.5级以下;采用结晶器电磁搅拌,铸坯的中心疏松可控制在0.5～1.0级以下。
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| 关 键 词： | 连铸 方坯 疏松 缺陷 分析 控制 |
ANALYSIS AND CONTROL OF POROSITY DEFECT IN CONTINUOUS-CASTING SQUARE BILLET |
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| An Zhiguang,Li Xuemin,Wang Zhiran. ANALYSIS AND CONTROL OF POROSITY DEFECT IN CONTINUOUS-CASTING SQUARE BILLET[J]. Hebei Metallurgy, 2010, 0(3): 53-56 |
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| Authors: | An Zhiguang Li Xuemin Wang Zhiran |
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| Affiliation: | An Zhiguang,Li Xuemin,Wang Zhiran(No.2 Steel Rolling Mill,Tangshan Iron and Steel Company,Hebei Iorn and Steel Group,Tangshan,Hebei,063016) |
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| Abstract: | The mechanism of forming of porosity defect in continuous-casting square billet is introduced.For various grades of steel the center porosity in billet can be controlled under 0.5 class with measures such as： limiting drawing speed,optimizing water-feeding system,reasonable control H08 end oxygen,controlling superheating of molten steel in tundish between 20～30 ℃ during casting,gas and water atomization second-cooling,or under 0.5～1.0 class with mold electric-magnetic stirring. |
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| Keywords: | continuous casting square billet porosity defect analysis control |
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