对CaO-SiO2-Al2O3-MgO夹杂物熔点的影响因素进行了多尺度分析，利用Factsage模拟了CaO质量分数对CaO-SiO2-Al2O3-MgO夹杂物熔点的影响规律。多尺度分析表明，工位操作（101 m）影响夹杂物成分（10-10 m）的最后可控因素为钙线喂入量。其通过影响局部钢液中钙质量分数（100 m）来改善熔池的动力学条件（10-3 m），改变夹杂物中CaO质量分数（10-10 m）。模拟结果表明，当CaO质量分数为30%时，CaO-SiO2-Al2O3-MgO相图中低熔点区域的比例达到最大。通过实例分析得到了夹杂物控制的工位级效应，表明了对钢液洁净度进行多尺度深入研究的可行性。
It made a multiscale analysis of influence factors on CaO-SiO2-Al2O3-MgO inclusion melting point. The influ-ence 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 calci-um 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 ar-ea in CaO-SiO2-Al2O3-MgO achieves a maximum when w(CaO) is 30%. It makes instance analysis of inclusions control ef-fect in station-csale,which shows the feasibility of further multi-scale research on the cleanliness of molten steel.
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