| 镁对低碳铝镇静钢SPHC中夹杂物变性的影响 |
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| 引用本文： | 冯捷,包燕平,崔衡.镁对低碳铝镇静钢SPHC中夹杂物变性的影响[J].特殊钢,2010,31(6):16-20. |
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| 作者姓名： | 冯捷 包燕平 崔衡 |
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| 作者单位： | 1北京科技大学冶金与生态工程学院，北京100083；
2河北科技大学材料科学与工程学院，石家庄050018 |
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| 摘 要： | 运用热力学计算分析了镁对SPHC钢(0.065%C、0.025%Al)中夹杂物的作用,并结合80 t顶底复吹转炉流程工业试验,研究镁对SPHC钢中夹杂物的影响机理。热力学计算结果证明,当Al]2/aMg]3≤7.69×1010,钢中就会生成单独的MgO·Al2O3;对SPHC钢进行喂0.875 kg/t镁线的工业试验结果表明,镁处理可细化夹杂,使团簇状Al2O3变为细小的MgO·Al2O3夹杂,MnS夹杂也得到了变性,夹杂物数量减少,提高了钢液的纯净度。
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| 关 键 词： | 镁处理 SPHC钢 热力学计算 Al2O3 MgO?Al2O3 |
Effect of Magnesium on Modification of Inclusions in Low Carbon Aluminium-Killed Steel SPHC |
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| Feng Jie,Bao Yanping,Cui Heng.Effect of Magnesium on Modification of Inclusions in Low Carbon Aluminium-Killed Steel SPHC[J].Special Steel,2010,31(6):16-20. |
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| Authors: | Feng Jie Bao Yanping Cui Heng |
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| Affiliation: | 1 Metallurgical and Ecological Engineering School, University of Science and Technology, Beijing 100083 ；
2 School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018 |
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| Abstract: | The effect of magnesium on modification of non-metallic inclusions in steel SPHC (0. 065% C, 0. 025 % Al) is analyzed by thermodynamic calculation, and combined with commercial test by using an 80 t top and bottom combined blown converter flow sheet, the mechanism for influence of magnesium on inclusions in steel SPHC is studied. Thermodynamic calculation results prove that asAl]2/aMg]3≤7. 69 x 1010, the inclusion MgO ? Al2O3 alone forms in steel ； Commercial test with feeding 0. 875 kg/t magnesium wire in steel SPHC shows that the inclusions are tine by magnesium treatment i. e. the round cluster Al2O3 is modified to fine inclusion MgO ? Al2O3 while the inclusion MnS is also modified, the amount of inclusions in steel decreases and the cleanliness of steel in advanced. |
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| Keywords: | Magnesium Treatment Steel SPHC Thermodynamic Calculation Al2O3 MgO?Al2O3 |
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