摘要
采用拉速、过热度、钢坯温度调节法控制方坯连铸二冷区水量,控制模型避开铸坯表面温度的直接测量,应用方坯凝固传热数学模型进行计算。以生产厂小方坯连铸机为研究对象,比较了采用不同的二冷水控制方法时控制效果的差异。结果表明,当浇注条件稳定时,采用拉速-水量控制方法可获得较稳定的铸坯表面温度分布,在拉速出现波动时,采用钢坯温度进一步调节水量的动态控制法比拉速、过热度-水量控制法有更好的控制效果。
Casting speed, superheat, billet temperature adjustment method were applied to control secondary spray water. The model could calculate billet surface temperature though heat transfer mathematical model instead of direct measurement. The control effects were compared with different methods of secondary cooling water in the manufacturing plants. The results showed that surface temperature was stable to use the speed-water control model in condition of stable casting and more stable to use the billet temperature to regulate model with speed fluctuations.
出处
《铸造技术》
CAS
北大核心
2010年第1期84-87,共4页
Foundry Technology
关键词
方坯
动态控制
热传输
二冷水
Billet
Dynamic control
Heat-transfer
Secondary cooling water
