漏斗形结晶器宽度对流动、传热凝固行为影响的数值模拟  

Numerical Simulation of Fluid Flow and Thermal Characteristics in the Funnel- type Mold with Different Width

作　　者：徐绵广[1] 刘和平[1] 陈远清[1] 

机构地区：[1]钢铁研究总院连铸技术国家工程研究中心,北京100081

出　　处：《钢铁钒钛》2012年第6期63-68,共6页Iron Steel Vanadium Titanium

摘　　要：改变薄板坯连铸结晶器的宽度可以适应客户对不同规格铸坯的需求,因此有必要对不同宽度结晶器钢液流动、传热凝固行为进行研究。采用耦合模型,研究拉速4.0 m/min时,宽度1 100、1 300、1 600 mm漏斗形结晶器钢液流动、传热凝固行为。结果表明,结晶器宽度增加,自由液面状态相对传统板坯表现出一定差异,钢液内夹杂物上浮更困难。宽度改变对传热凝固的影响主要体现在沿水口射流方向的局部区域,结晶器出口处凝固坯壳薄弱区随宽度增加而扩大。The width of the thin slab mold can be changed to produce different steel grades to satisfy the needs of customers. Therefore, it is necessary to study the fluid flow, heat transfer and solidification be havior in the mold. In this paper, the coupled model was adopted to analyze the fluid flow, heat transfer and solidification behavior of different width, 1 100, 1 300 mm, and 1 600 mm in the funneltype mold. The casting speed was at 4.0 m/min. The results showed that the free surface condition compared to the conventional slab show some differences as the width of the mold increases. The width change mainly re fleeted the impact of heat transfer and solidification of the local area in the direction along the outlet jet, the weak areas of the mold exit of the solidified shell with a width increase in expansion.

关 键 词：连铸 漏斗形结晶器 薄板坯 热行为 数值模拟 

分 类 号：TF777.7[冶金工程—钢铁冶金]