| 超宽板坯表面纵裂纹的原因分析及预防措施 |
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| 引用本文： | 吕亚,王新志,李文山,刘磊,胡锐,张书铭.超宽板坯表面纵裂纹的原因分析及预防措施[J].中国冶金,2011,21(6):19-22. |
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| 作者姓名： | 吕亚 王新志 李文山 刘磊 胡锐 张书铭 |
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| 作者单位： | 1. 安阳钢铁集团有限责任公司第二炼轧厂， 河南 安阳 455004； 2. 山西工程职业技术学院， 山西 太原 030009； 3. 安阳钢铁集团有限责任公司技术中心， 河南 安阳 455004 |
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| 摘 要： | 分析了宽板坯表面纵裂纹的产生的原因，并结合生产实践，提出切实可行的工艺预防措施。分析认为在浇注碳质量分数在0.12%~0.17%包晶区的钢种、硫质量分数偏高且锰硫比小于30的钢种及含Nb的微合金钢种时，易产生表面纵裂纹；还进一步分析了工艺拉速、保护渣、水口浸入深度、结晶器液面波动对表面纵裂纹的影响。
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| 关 键 词： | 表面纵裂纹 宽板坯 表面质量 分析 |
Analysis and Preventive Measures to Longitudinal Surface Cracks on Wide Slab |
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| LV Ya,WANG Xin-zhi,LI Wen-shan,LIU Lei,HU Rui,ZHANG Shu-ming.Analysis and Preventive Measures to Longitudinal Surface Cracks on Wide Slab[J].China Metallurgy,2011,21(6):19-22. |
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| Authors: | LV Ya WANG Xin-zhi LI Wen-shan LIU Lei HU Rui ZHANG Shu-ming |
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| Affiliation: | LV Ya1,WANG Xin-zhi1,LI Wen-shan1,LIU Lei1,HU Rui2,ZHANG Shu-ming3(1.No.2 Steel-Making and Rolling Plant,Anyang Iron and Steel Group Co.,Ltd.,Anyang 455004,Henan,China,2.Shanxi Engineering Vocational College,Taiyuan 030009,Shanxi,3.Technique Center of Anyang Iron and Steel Group Co.,China) |
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| Abstract: | The reasons affecting on longitudinal surface cracks of wide slab are analyzed.Therefore,we can take preventive measures to improve steel quality based on the production practice.It is concluded that surface longitudinal cracks appear easily in the microalloy steel containing Nb and the steel in high sulfur content and whose S ratio at manganese are less than 30.The steel in peritectic area whose carbon content is in 0.12%~0.17% are also easy to produce surface longitudinal cracks.In addition,we further ana... |
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| Keywords: | longitudinal surface cracks wide slab surface quality analysis |
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