Optimization of laminar cooling control strategy for thick gauge hot rolled strip steel
Due to the lack of accurate mathematical models for laminar cooling control and significant hysteresis in the production of steel strips with a thickness of over 11 mm during hot rolling at a certain steel plant,the length of steel strips with a thickness of over 11 mm is short,and the model control is prone to problems such as inaccurate presetting,dynamic adjustment lag,and even reverse adjustment,resulting in large temperature fluctuations or scrap coiling.This article conducts extensive statistical analysis based on the actual situation of laminar cooling con-trol in the production process,and develops a new classification table lookup model based on steel grade,thickness,width,final rolling temperature,threading speed,first acceleration,maximum threading speed,laminar target temperature,etc.It has functions such as preset calculation,feedforward control,feedback control,self-learning,etc.After on-site inspection,the solution proposed in this article can effectively improve the accuracy and stability of coiling temperature control for steel strips with a thickness of over 11 mm,and the hit rate of coiling temperature±20℃reaches 93.27%.
laminar coolingthick specificationcoiling temperaturehot rolling
万方数据
维普
