Evolution of inclusions during calcium treatment in liquid steel and its thermodynamic analysis
The morphologies and compositions of typical inclusions in liquid steel before and after calcium treatment were observed to study the evolution mechanism of non-metallic inclusions during calcium treatment. The process of calcium treatment could be modified by thermodynamic analysis. Results show th...
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Science Press
2016-12-01
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| Series: | 工程科学学报 |
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| Online Access: | http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2016.s1.006 |
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| author | CAI Xiao-feng BAO Yan-ping LIN Lu |
| author_facet | CAI Xiao-feng BAO Yan-ping LIN Lu |
| author_sort | CAI Xiao-feng |
| collection | DOAJ |
| description | The morphologies and compositions of typical inclusions in liquid steel before and after calcium treatment were observed to study the evolution mechanism of non-metallic inclusions during calcium treatment. The process of calcium treatment could be modified by thermodynamic analysis. Results show that irregular solid inclusions finally change into spherical inclusions after calcium treatment. When the mass fraction of aluminum in liquid steel is 0.03% at 1873 K, the mass fractions of oxygen and calcium should be controlled in the range of 5×10<sup>-6</sup>~17×10<sup>-6</sup> and 0.7×10<sup>-6</sup>~30×10<sup>-6</sup>, respectively. Inclusions in liquid steel can be modified effectively. When the mass fraction of sulfur in liquid steel at 1873 K is in the range of 6×10<sup>-6</sup>~19×10<sup>-6</sup>, liquid calcium aluminate inclusions can be formed via Al<sub>2</sub>O<sub>3</sub>, and the formation of CaS can be decreased. |
| format | Article |
| id | doaj-art-e29222cc87c8434290857887c076fdb2 |
| institution | OA Journals |
| issn | 2095-9389 |
| language | zho |
| publishDate | 2016-12-01 |
| publisher | Science Press |
| record_format | Article |
| series | 工程科学学报 |
| spelling | doaj-art-e29222cc87c8434290857887c076fdb22025-08-20T01:47:55ZzhoScience Press工程科学学报2095-93892016-12-0138S1323610.13374/j.issn2095-9389.2016.s1.006Evolution of inclusions during calcium treatment in liquid steel and its thermodynamic analysisCAI Xiao-feng0BAO Yan-ping1LIN Lu2State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, ChinaThe morphologies and compositions of typical inclusions in liquid steel before and after calcium treatment were observed to study the evolution mechanism of non-metallic inclusions during calcium treatment. The process of calcium treatment could be modified by thermodynamic analysis. Results show that irregular solid inclusions finally change into spherical inclusions after calcium treatment. When the mass fraction of aluminum in liquid steel is 0.03% at 1873 K, the mass fractions of oxygen and calcium should be controlled in the range of 5×10<sup>-6</sup>~17×10<sup>-6</sup> and 0.7×10<sup>-6</sup>~30×10<sup>-6</sup>, respectively. Inclusions in liquid steel can be modified effectively. When the mass fraction of sulfur in liquid steel at 1873 K is in the range of 6×10<sup>-6</sup>~19×10<sup>-6</sup>, liquid calcium aluminate inclusions can be formed via Al<sub>2</sub>O<sub>3</sub>, and the formation of CaS can be decreased.http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2016.s1.006calcium treatmentinclusionsevolutionthermodynamic analysis |
| spellingShingle | CAI Xiao-feng BAO Yan-ping LIN Lu Evolution of inclusions during calcium treatment in liquid steel and its thermodynamic analysis 工程科学学报 calcium treatment inclusions evolution thermodynamic analysis |
| title | Evolution of inclusions during calcium treatment in liquid steel and its thermodynamic analysis |
| title_full | Evolution of inclusions during calcium treatment in liquid steel and its thermodynamic analysis |
| title_fullStr | Evolution of inclusions during calcium treatment in liquid steel and its thermodynamic analysis |
| title_full_unstemmed | Evolution of inclusions during calcium treatment in liquid steel and its thermodynamic analysis |
| title_short | Evolution of inclusions during calcium treatment in liquid steel and its thermodynamic analysis |
| title_sort | evolution of inclusions during calcium treatment in liquid steel and its thermodynamic analysis |
| topic | calcium treatment inclusions evolution thermodynamic analysis |
| url | http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2016.s1.006 |
| work_keys_str_mv | AT caixiaofeng evolutionofinclusionsduringcalciumtreatmentinliquidsteelanditsthermodynamicanalysis AT baoyanping evolutionofinclusionsduringcalciumtreatmentinliquidsteelanditsthermodynamicanalysis AT linlu evolutionofinclusionsduringcalciumtreatmentinliquidsteelanditsthermodynamicanalysis |