| 不同浇铸阶段IF钢连铸板坯洁净度 |
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| 引用本文： | 袁方明, 王新华, 李宏, 任子平, 张富强, 孟劲松, 孙群. 不同浇铸阶段IF钢连铸板坯洁净度[J]. 工程科学学报, 2005, 27(4): 436-440. DOI: 10.13374/j.issn1001-053x.2005.04.012 |
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| 作者姓名： | 袁方明 王新华 李宏 任子平 张富强 孟劲松 孙群 |
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| 作者单位： | 北京科技大学冶金与生态工程学院,北京,100083;鞍山钢铁(集团)公司,鞍山,114021 |
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| 摘 要： | 对采用转炉-RH精炼-连铸工艺生产的IF钢连铸板坯在不同浇铸阶段(开浇、正常、两炉交接及浇铸末期)的铸坯洁净度进行了较为细致地研究和对比分析.由于浇铸初期存在二次氧化及较大程度地增碳,开浇坯[C],[O]T,[N]含量远高于其他时间段的铸坯,并存在较大尺寸的簇群状Al2O3夹杂.正常坯夹杂主要为尺寸较小(≤ 30μm)的块状及少量簇群状Al2O3夹杂(≤ 40μm),交接坯及尾坯仍以较小尺寸的块状Al2O3夹杂为主,但存在极少量大于100μm的复合夹杂.
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| 关 键 词： | IF钢 连铸板坯 洁净度 夹杂物 |
| 收稿时间： | 2004-05-25 |
| 修稿时间： | 2005-07-16 |
Cleanliness of interstitial-free steel slabs produced in different casting stages |
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| YUAN Fangming, WANG Xinhua, LI Hong, REN Ziping, ZHANG Fuqiang, MENG Jingsong, SUN Qun. Cleanliness of interstitial-free steel slabs produced in different casting stages[J]. Chinese Journal of Engineering, 2005, 27(4): 436-440. DOI: 10.13374/j.issn1001-053x.2005.04.012 |
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| Authors: | YUAN Fangming WANG Xinhua LI Hong REN Ziping ZHANG Fuqiang MENG Jingsong SUN Qun |
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| Abstract: | The cleanliness of IF steel slabs produced by the BOF-RH-CC process in different casting stages was investigated. Due to reoxidation at the casting beginning period, the[C],[O]T,[N] contents of the first slab are higher than those of the slabs in other stages, and a few big size Al2O3 clusters exist in the first slab. The non-metallic inclusions in the normal slabs at the casting middle period is mainly small size Al2O3 blocks (≤ 30μm) and a few small size Al2O3 clusters (≤ 40μm). The transition and end slabs have still mainly small size Al2O3 blocks, but appear few big size (≥ 100 μm) composite inclusions. |
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| Keywords: | IF steel slab cleanliness inclusions |
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