本文通过水模型试验和数值模拟研究了异型坯结晶器双浸入式水口浇铸时流场特征,优化了双浸入式水口的设计参数,并与单浸入式水口的流场特征进行比较分析,研究结果表明:双浸入式水口浇铸有利于异型坯结晶器内流场的均匀性和对称性,避免了单水口浇铸时局部区域流体流动强烈现象,改善结晶器液面的稳定性和波动均匀性。双浸入式水口最优设计参数为底孔直径23mm、腹向侧孔直径14mm、翼向侧孔直径10mm、侧孔倾角60。根据模拟研究结果,在马钢三钢轧总厂进行工业实践,实践结果表明:异型坯连铸双浸入式水口浇铸技术使结晶器内流场分布更合理,液渣层分布更均匀,结晶器黏结漏钢发生率下降32.8%,废品率降低20%,平均连浇炉数增加近3倍,提高了连铸生产效率。
The flow fields of the beam blank mold with double SENs and single SEN were studied by water-model experiment, and the designed parameters of double SENs were optimized by numerical simulation. The results showed that the flow field of double SENs was more symmetrical and molten steel level fluctuation was optimum, and the optimal parameters of double SENs were obtained as below: the diameter of bottom port approximately 23mm, the diameter of side ventro-port approximately 14mm, the diameter of side wing-port approximately 10mm, and side port angle about 60. The technical practice indicated that the liquid steel flow of double SENs was more suitable for the process of the beam blank mold in No.3 steelmaking and rolling plant of Maanshan Iron and Steel Co.. The rate of sticking breakout was descended by 32.8%, the rate of waste product was decreased by 20%, the heat number of sequential casting was increased by about 3 times.
参考文献
- 下载量()
- 访问量()
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%