摘要
实现高满意度轧后冷却控制目标必须依赖于轧后冷却过程控制系统高精度的温度场计算模型。以钢板内部热传导、空冷及水冷换热系数为主要研究对象,建立了轧后冷却数学模型,回归了空冷和水冷换热系数,采用Crank-Nicolson有限差分法求解钢板温度场。将该模型嵌入到国内某中厚板厂轧后冷却控制系统,对不同钢种不同厚度钢板进行轧后冷却试验,试验结果表明,实际终冷温度和目标终冷温度偏差±10℃的命中率在90%以上,很好地实现了冷却过程温度控制。
High-precision temperature field model is helpful to achieve high satisfaction control objectives for medium plate cooling process.As the main object of study,internal heat conduction,air-cooled and water-cooled heat transfer coefficient were investigated concretely and the mathematical models for plate cooling process were established.The regression work of heat transfer coefficient was done,using Crank-Nicolson finite difference method to solve the temperature field of plate.Embed this model into controlled cooling system in some plant factory,and cooling experiment are carried out on different steel grade and different thickness plate,the data tested indicate that the deviation between-10℃ and ＋10℃ of actual stop cooling temperature and objective stop cooling temperature is above 90%,well achieved cooling process temperature control.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2010年第8期27-30,共4页
Journal of Iron and Steel Research
关键词
中厚板
轧后冷却
温度模型
高精度
medium plate
cooling process
temperature model
high-precision
