冷轧机工艺冷却系统的优化控制

Optimum control for technology coolant of cold rolling mill

为优化冷轧机工艺冷却系统的控制,提出冷轧机工艺冷却控制与板形分段冷却控制的各自所需的乳化液流量的计算模型.通过乳化液冷却流量偏差计算出所对应的附加板形偏差量,用于补偿冷轧过程中基本冷却功能与板形控制分段冷却功能二者对不同乳化液流量喷射的工艺要求.进而实现了二种不同工艺功能对冷却流量的优化控制,实现了冷轧过程工艺基本冷却与板形分段冷却之间的组合优化控制,在保证稳定轧制所需的冷却流量前提下,满足了带钢板形质量的良好控制.

In order to obtain the optimum control for technology coolant of cold rolling mill, this paper constructed the model for basic rolling coolant and the model for selective coolant of flatness control for cold rolling mill. The emulsion amount required by basic rolling coolant function and by selective coolant of flatness control is quite different sometimes. The additive flatness deviation model was discussed and used for compensation the emulsion amount difference required by the two coolant functions. The uncoupled control principle was illustrated. The new optimum models were used for control system of the practical cold rolling mill. The strip flatness quality is well controlled in the condition that the basic emulsion amount of basic rolling coolant is guaranteed for stable rolling.