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| Multiscale structure on influence factors of CaO-SiO2-Al2O3-MgO inclusion control |
| LIN Teng-chang1，ZHU Rong2，ZENG Jia-qing1，LI Shi-qi2 |
（1. Metallurgical Technology Institute， Central Iron and Steel Research Institute， Beijing 100081， China
2. School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083， China） |
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Abstract It made a multiscale analysis of influence factors on CaO-SiO2-Al2O3-MgO inclusion melting point. The influence of[w(CaO)]on CaO-SiO2-Al2O3-MgO inclusion melting point was simulated by using Factsage. Multiscale analysis shows that the final controllable factor of unit operational (101 m) influence on inclusions composition (10-10 m) is the calcium wire feeding amount which improves the dynamic condition of molten pool (10-3 m) through local[w([Ca])]in molten steel (100 m)， and changes[w(CaO)]in inclusions (10-10 m). Simulated results show that the percent of low melting point area in CaO-SiO2-Al2O3-MgO achieves a maximum when[w(CaO)]is 30%. It makes instance analysis of inclusions control effect in station-csale， which shows the feasibility of further multi-scale research on the cleanliness of molten steel.
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Received: 25 August 2014
Published: 11 June 2015
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2015, Vol. 50 
