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超低氧钢中硫化钙夹杂析出的热力学讨论及控制
引用本文: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.
作者姓名:杨俊  王新华  王万军
作者单位:湖南华菱湘潭钢铁有限公司
基金项目:国家重点基础研究发展计划资助项目(2010CB630806)
摘    要: 对超低氧试验钢中硫化钙夹杂析出的热力学分析表明,在本试验钢成分条件下,钢液在液相线温度以上不会自发生成硫化钙夹杂,硫化钙夹杂是钢液凝固过程中,随着钢液中[Al]、[S]溶解度的降低,[S]与钢液中较低熔点的CaO Al2O3类及CaO MgO Al2O3夹杂物表层的CaO反应析出形成;同时,通过计算得到,本试验钢在凝固过程中不析出硫化钙夹杂的条件为将硫的质量分数控制在0.0004%以下。

关 键 词:硫化钙      夹杂物      活度系数  
收稿时间:2010-07-26

Thermodynamic Evaluation and Control of Precipitation of Calcium Sulfide Inclusion in Ultra-Low Oxygen Steel
YANG Jun,WANG Xin-hua,WANG Wan-jun.Thermodynamic Evaluation and Control of Precipitation of Calcium Sulfide Inclusion in Ultra-Low Oxygen Steel[J].Iron & Steel,2011,46(6):45-49.
Authors:YANG Jun  WANG Xin-hua  WANG Wan-jun
Affiliation:YANG Jun,WANG Xin-hua,WANG Wan-jun(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China)
Abstract:The thermodynamic analysis on precipitation of calcium sulfide inclusions in ultra-low 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 CaO-Al2O3 and CaO-MgO-Al2O3 inclusions in molten steel with the solubility of acid-soluble aluminum and sul...
Keywords:calcium sulfide  inclusion  activity coefficient  
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