摘要
帘线钢中含钛夹杂物尺寸和数量是衡量帘线钢质量的一个重要指标.帘线钢精炼过程钛含量控制是影响帘线钢中钛夹杂的一个关键因素.本文对帘线钢精炼和连铸过程,碳还原氧化钛的热力学进行了分析.通过计算得出结论,在实际帘线钢精炼和连铸过程,顶渣中的TiO2存在被还原的热力学条件,并通过现场试验证明了热力学计算的合理性.根据理论计算结果,提出了现场的工艺控制措施.在帘线钢精炼和连铸过程使用的造渣剂和耐火材料的成分必须严格控制,防止精炼过程钢液增钛.采用喂线的增碳方式,可以达到快速增碳和减少钢液增钛的目的.同时,通过准确控制转炉冶炼终点碳含量,减少帘线钢精炼过程增碳次数,对于控制帘线钢中钛含量也有重要意义.
Thermodynamical analysis of reduction of TiO2 by carbon during tyre cord steel refining and continuous casting processes was conducted.The results show that the thermodynamical condition of reduction of TiO2 in the refining slag and covering agent by carbon exists,which was testified by the industrial experiment.Therefore,the slagging agent and refractory used in the tyre cord steel production must be tightly controlled to prevent titanium increment in steel.Through wire feeding,lowering titanium increase and quick adjustment of carbon content in liquid steel,titanium content in the steel can be decreased.At the meantime,it is crucial to decrease the times of increasing carbon and to accurately control the end-point carbon content.
出处
《材料与冶金学报》
CAS
北大核心
2013年第2期99-102,共4页
Journal of Materials and Metallurgy
关键词
TIO2
帘线钢
热力学
精炼过程
TiO2
tyre cord steel
thermodynamics
refining process
