旋转流水口对结晶器钢水温度场影响的数值模拟  

Numerical simulation on the effect of swirling nozzles on the temperature field in a continuous casting mold

作　　者：卢金雄[1] 张晨[2] 胡会军[2] 陈艳艳[1] 张炯明[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]宝山钢铁股份有限公司,上海201900

出　　处：《北京科技大学学报》2007年第9期937-941,共5页Journal of University of Science and Technology Beijing

摘　　要：采用数值模拟的方法研究了不同旋转流水口工艺条件对结晶器内温度场的影响.结果表明:结晶器旋流水口会稍微增加水口两侧高温区的不对称性,但能提高弯月面处钢水的温度,使弯月面处钢水温度更均匀——传统水口从水口到弯月面处温降约为15℃左右,而旋流水口仅为10℃.增加拉速或降低旋流片高度,会增加钢水弯月面处的温度;旋流片角度为120°或旋流片距水口底部390mm时,钢水弯月面处温度最高.The effect of swirling nozzles with different processing parameters on the flow field in a mold is studied using numerical simulation. The results show that the high-temperature dissymmetry in the upper mold is increased a little by using a swirling nozzle, but the meniscus temperature and its uniformity are increased. The temperature difference between nozzle inner and meniscus is 15 ℃ for a traditional nozzle and 10 ℃ for a swirling nozzle. Increasing the casting speed or decreasing the blade height can increase the temperature at meniscus. When the swirling angle is 120^o or the distance between blade and nozzle bottom is 390mm, the temperature of molten steel is the highest at meniscus.

关 键 词：结晶器 旋转流水口 温度场 数值模拟 

分 类 号：TF777.2[冶金工程—钢铁冶金]