帘线钢生产过程中钛含量的影响因素及控制  

Influence factors and control of titanium content during tire cord steel production

作　　者：雷家柳[1] 薛正良[1] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用教育部重点实验室,湖北武汉430081

出　　处：《江苏大学学报（自然科学版）》2015年第6期728-732,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：湖北省自然科学基金资助项目(2015CFC838)

摘　　要：为了有效控制钛夹杂对帘线钢盘条拉拔加工性能的不利影响,通过热力学理论计算结合现场实际生产数据,对铁水中的[Ti]-[Si]平衡、转炉脱钛以及精炼增钛过程进行了分析,提出了相应的钛质量分数控制措施.结果表明:铁水中钛和硅的质量分数存在较好的线性关系,将高炉铁水硅质量分数控制在较低水平,对降低铁水钛质量分数具有重要意义.转炉终点钢水钛质量分数受转炉终点钢水碳质量分数和温度的影响,其中温度的影响尤为明显.为了降低转炉终点钢水含钛量,必须做好转炉终点碳温控制.此外,为了尽量减少钢液精炼过程中的增钛量,必须严格控制转炉出钢下渣量和精炼渣料中的含钛量.In order to effectively control the detrimental effect of Ti inclusion on drawing processing performance of steel wire rod, the equilibrium of [ Ti] -[ Sil in hot metal, titanium removal in convener and titanium pick-up during refining process were investigated by thermodynamic theoretical calculation and actual production data. The corresponding control measures of Ti content were proposed. The analysis results show that the Ti content in hot metal has good linear relationship with that of Si. It is of great significance to reduce the Ti content in BF hot metal when the Si content is controlled at low level. The Ti content at BOF endpoint is affected by C content and temperature, especially by temperature. In order to decrease the Ti content at BOF endpoint, C content and temperature must be well controlled. Under the strict control titanium pick-up during of converter slag amount and Ti content in refining slag material, the amount of refining process can be reduced substantially.

关 键 词：帘线钢 脱钛 增钛 热力学 钛夹杂 

分 类 号：TF03[冶金工程—冶金物理化学]