高拉速下板坯连铸结晶器铜板传热行为研究  

Study on heat transfer behavior of mold copper plate during high speed continuous casting of steel slabs

作　　者：王晓连[1] 王新华[1] 李林平[1] 王万军[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《炼钢》2014年第3期54-59,共6页Steelmaking

摘　　要：基于首钢京唐钢铁联合有限责任公司高拉速连铸生产低碳钢过程,采用ANSYS软件建立结晶器铜板传热的三维有限元模型,并结合现场实测冷却水和铜板温度数据,研究了高拉速下结晶器铜板的温度场。计算结果表明,有无冷却背板结晶器铜板温度分布差别不大;不同拉速时结晶器底部均出现一定的回温现象,且随着拉速的升高,回温幅度逐渐增大;拉速提高铜板热面温度升高,但幅度逐渐减小;拉速为2.3 m/min时,铜板热面中心最高温度为328.0℃,出现在弯月面以下10 mm左右的位置;镀层会导致铜板热面温度的升高,且升高幅度与镀层厚度正相关;增大水量在一定范围内能够降低铜板温度。Based on high speed continuous casting process of low carbon steel in SGJT,a three-dimensional finite-element heat-transfer model was established by ANSYS to predict temperature distribution of mold copper during high speed continuous casting.The results showed that the effect of backup plate could be neglected.An increase of temperature occurred around mold bottom and the extent of growth increased as casting speed rises.Increasing casting speed leaded to higher temperatures,but the increment decreased.The highest center temperature of hot copper surface at casting speed 2.3 m/min was 328.0℃,occurring just 10 mm below the meniscus.Nickel layer bringed a higher temperature and had a positive relation to thickness and casting speed.Increasing water flow rate could reduce the temperature of copper plate within a certain range.

关 键 词：高拉速 热流 温度分布 镀层 水量 

分 类 号：TF777.1[冶金工程—钢铁冶金]