80钢方坯连铸凝固末端位置研究

STUDY ON SOLIDIFICATION END OF 80 CONTINUOUS CASTING BILLET

为得到方坯连铸凝固末端的准确信息,采用数值模拟的方法对液芯长度进行了计算,并通过射钉实试验对结果进行了验证,结果表明,该模型可较好的反映实际连铸凝固传热过程,当拉速为1.3 m/s时,铸坯的液芯长度为21.1 m;拉速为1.25 m/s时,铸坯的液芯长度为20.2 m。拉速越大,凝固末端越靠后。

In order to get the exact information of continuous casting solidification end for square billet, the numerical simulation method was applied to obtain the liquid core length and the calculation results were verified by nail - shooting test. The results show that the model can reflect the real process of continuous casting solidification and heat transfer. When the casting speed is 1.3m/s and 1.25m/s, the liquid core length is 21. 1m and 20.2m, respectively. The faster casting speed is, the longer continuous casting solidification end.