结晶器内钢液流动特性的优化  

Optimization of flow pattern in a slab continuous casting mold

作　　者：于会香[1] 王新华[1] 陆巧彤[2] 王万军[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]青岛钢铁控股集团有限责任公司技术中心,青岛266043

出　　处：《北京科技大学学报》2009年第4期477-480,共4页Journal of University of Science and Technology Beijing

基　　金：国家重点基础研究发展计划资助项目(No.2004CB619106)

摘　　要：以大板坯连铸结晶器为研究对象,采用水模型和数值模拟的方法研究了不同水口出口角度对结晶器内钢液流动的影响.结果表明:现行15°水口在距结晶器边部50 mm的位置,表面流速和波高较小,传递给弯月面的热量较少,不利于保护渣的熔化;射流撞击到结晶器窄边的位置较深,压力较大,对撞击点下部坯壳的冲击力也较大;水口出口角度改为10°后,结晶器漏钢预报系统的报警次数大大减少,杜绝了漏钢的事故.Water modeling and numerical simulation were applied to investigate the influence of the port angle of a submerged entry nozzle （SEN） on the flow pattern in a slab continuous casting mold. The results indicate that under the current 15° SEN, the surface velocity and fluctuation are relatively small at meniscus, which does harm to the melt of mold powder. The impinging point of jet flow streaming from the SEN is relatively low. Below the point, the pressure on the solidifying shell is relatively high. The sharply decreasing frequency of breakout alarms and no breakout were achieved after a new 10° SEN was put into operation.

关 键 词：结晶器 浸入式水口 水模型 数值模拟 

分 类 号：TF777.1[冶金工程—钢铁冶金]