Abstract:For the problem of secondary cooling water in continuous casting production, the mathematical model of solidification and heat transfer for casting slab was established. By real-time simulating slab temperature and controlling water with PID technology, an on-line secondary cooling control model was developed. According to changes of casting steel grades, slab sizes and process parameters, the model can adjust and set control water flow of all cooling zones dynamically, then control the superficial temperature nears its aim. The stability and reliability of secondary cooling control system is guaranteed by designing reasonable control system structure. On-line measuring temperature shows that the model has perfect control precision. When casting speed, oeverheat of molten steel change, model can adjust cooling water to a reasonable level rapidlly with small overshoot, which ensures temperature tracking error to be always limited to a less extent. In steady casting process, the superficial temperature can maintain at the aim. Up to now, the secondary cooling model has been applied to continuous casting machines inside and outside Baosteel, all of them achieved desired control effects.
收稿日期: 2011-08-03
出版日期: 2012-03-20
引用本文:
张群亮. 宝钢在线二冷控制模型的研发与应用[J]. 钢铁, 2012, 47(3): 30-33.
ZHANG Qun-liang. Development and Application of Baosteel On-Line Secondary Cooling Control Model. Iron and Steel, 2012, 47(3): 30-33.