板坯连铸二冷动态配水控制研究  

Research on Dynamic Water Distribution Control of Secondary Cooling Section in Slab Continuous Casting

作　　者：李艳磊[1] 王南[1] 孟彩茹[1] 张静超[2] 

机构地区：[1]河北工程大学机电学院,河北邯郸056038 [2]东北大学信息科学与工程学院,辽宁沈阳110819

出　　处：《铸造技术》2015年第1期141-146,共6页Foundry Technology

基　　金：河北省自然科学基金资助项目(E2012402027)

摘　　要：连铸过程中,二次冷却水量控制是影响铸坯表面和内部缺陷的关键之一。实际生产中的不确定性干扰,会导致生产调度计划的改变,此时水量实时动态优化设定的好坏,对铸坯的质量有着关键性的影响。对现有的铸坯动态模型进行了适当简化,并在简化的生命周期模型的基础上,提出了水量的实时动态优化设定方法。通过范数运算寻找与任一凝固单元最接近的理想状态轨迹,并确定相应的综合换热强度作为控制目标,通过控制配水量来实现对温度场的实时动态控制。仿真实验验证了本文所提方法的必要性和有效性。In the continuous casting process, the secondary cooling water control is one of the key effects of the slab surface and internal defects. Due to the uncertainties in actual production, the production scheduling plan need to be changed, meanwhile, the dynamic setting of the cooling flow rate plays an important roll in the quality of the slab. Simplify the slab dynamic model, and based on the simplified life circle model, propose the method of real-time dynamic optimization setting of the cooling flow rate. Looking the ideal trajectory which closest to either a solidification unit through the norm operation, and then determine the corresponding integrated heat intensity as the control target, to achieve real-time dynamic control of the temperature field by controlling the distribution of water. Simulation results demonstrate the necessity and effectiveness of the proposed method.

关 键 词：板坯连铸机 二冷区 二次冷却水 动态控制 

分 类 号：TF777.1[冶金工程—钢铁冶金]