漏斗形薄板坯结晶器内铸坯传热分析

为了更好地研究FTSC结晶器内铸坯的凝固过程,基于节点温度传递方法建立薄板坯结晶器内铸坯三维瞬态传热数值模型,采用有限元软件ANSYS模拟结晶器内铸坯三维稳态温度场。对比分析平板形及漏斗形结晶器内铸坯传热规律,探讨了漏斗区传热特点。结果表明,漏斗区内钢水存储空间增大,总热容量增加,漏斗区铸坯宽面表面中心温度升高,坯壳厚度减薄。FTSC结晶器宽面出口温度、坯壳厚度连续变化,与漏斗形布置一致。

Analysis of heat transfer in thin slab funnel shape mold

In order to better investigate the slab solidification process in FTSC mold,a 3D transient heat conduction model of thin slab within the funnel-shaped mold was established by the thought of node temperature transfer layer by layer. Through the analysis of ANSYS finite element software,the distribution of the 3D steady-state temperature field in mold was obtained. The heat transfer of mold with parallel plate and funnel-shaped plate was compared. Main results show that the funnel area expanded the storage space of molten steel in the mold,thus,the total heat capacity increased. The temperature at the center of wide surface of funnel slab increased and the shell thickness reduced. The temperature and shell thickness of wide surface at the exit of FTSC mold continuously changed,which was consistent with the fun-nel-shaped arrangement.