| Metallurgical quality of CSP thin slabs |
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| 引用本文： | DeguangZhou JieFu YonglinKang ZhongbingWang： JingLi ZhongboXu. Metallurgical quality of CSP thin slabs[J]. 北京科技大学学报(英文版), 2004, 11(2): 106-109 |
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| 作者姓名： | DeguangZhou JieFu YonglinKang ZhongbingWang： JingLi ZhongboXu |
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| 作者单位： | [1]MetallurgicalandEcologicalEngineeringSchool.UniversityofScienceandTechnologyBeijing,Beijing100083,China [2]GuangzhouZhujiangSteelCo.Ltd..Guangzhou510730,China |
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| 摘 要： | The casting structure, chemical composition segregation, dendrite arm space, inclusiona and during the CSP (compact strip production) rolling process were investigated. The results show that the CSP thin slab has a feature of uniform fine grains, more columnar crystals, less central porosity and segregation etc. There is no great difference in macrostructure between the CSP thin slab and conventional slab; however, the fine dendrite structure of the CSP slab is more uniform. Moreover, the central porosity and segregation are obviously improved after the first pass; and the dendrite is bent along the rolling direction rather than broken into pieces.Small inclusions with the diameter less than 10 p.m in the CSP slab are dominantly consisted of aluminates formed by A1 deoxidation and Ca treatment and not floating out of the melt. The large size inclusions found in the continuous casting slab are very few.
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| 关 键 词： | CSP 薄板 冶金质量 铸造结构 树突结构 偏析 搀杂 致密带材生产 |
Metallurgical quality of CSP thin slabs |
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| Deguang Zhou,Jie Fu,Yonglin Kang,Zhongbing Wang,Jing Li,Zhongbo Xu. Metallurgical quality of CSP thin slabs[J]. Journal of University of Science and Technology Beijing, 2004, 11(2): 106-109 |
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| Authors: | Deguang Zhou Jie Fu Yonglin Kang Zhongbing Wang Jing Li Zhongbo Xu |
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| Abstract: | The casting structure, chemical composition segregation, dendrite arm space, inclusiona and during the CSP (compact strip production) rolling process were investigated. The results show that the CSP thin slab has a feature of uniform fme grains, more columnar crystals, less central porosity and segregation etc. There is no great difference in macrostructure between the CSP thin slab and conventional slab; however, the fine dendrite structure of the CSP slab is more uniform. Moreover, the central porosity and segregation are obviously improved after the first pass; and the dendrite is bent along the rolling direction rather than broken into pieces.Small inclusions with the diameter less than 10 μm in the CSP slab are dominantly consisted of aluminates formed by A1 deoxidation and Ca treatment and not floating out of the melt. The large size inclusions found in the continuous casting slab are very few. |
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| Keywords: | CSP casting structure segregation dendrite arm space inclusion |
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