Abstract：The thermodynamic analysis on precipitation of calcium sulfide inclusions in ultralow oxygen experimental steel shows that the calcium sulfide inclusions can not be produced itself in molten steel of liquid phase line temperature under the condition of this composition experimental steel, the CaS inclusions are precipitated by the reaction of sulfur with CaO of the surface layer of lower melting point CaOAl2O3 and CaOMgOAl2O3 inclusions in molten steel with the solubility of acidsoluble aluminum and sulfur reducing in solidification process. It is obtained by calculation that the sulfur content must be controlled below 0.0004% when this experimental steel can not precipitate CaS inclusion in solidification processing.
杨俊，王新华，王万军. 超低氧钢中硫化钙夹杂析出的热力学讨论及控制[J]. 钢铁, 2011, 46(6): 45-49.
YANG Jun,WANG Xinhua,WANG Wanjun. Thermodynamic Evaluation and Control of Precipitation of Calcium Sulfide Inclusion in UltraLow Oxygen Steel. Iron and Steel, 2011, 46(6): 45-49.
2011, Vol. 46 
