板带热连轧负荷分配新方法研究与应用.pdfVIP

板带热连轧负荷分配新方法研究与应用 ·1 · 板带热连轧负荷分配新方法研究与应用 李维刚 （武汉科技大学信息科学与工程学院，武汉 430081 ） 摘 要 提出一种“压下模式+轧制力模式”相结合的板带热连轧机组在线负荷分配新方法。根据压下模式负荷分 配计算确定精轧机组厚度分配的初始值，根据轧制力模式负荷分配的CLAD 算法进行轧制力按比例分配迭代计算， 最后采用压下模式分配计算确定的压下率分布范围对轧制力模式分配结果进行限幅处理。新方法已成功应用于国内 某热连轧生产线改造项目，在线应用表明该方法具有轧制稳定性好、操作工干预少等优点，在减小精轧各机架压下 率波动的同时尽量满足轧制力按目标比例分配的要求，有效提高带钢精轧过程的轧制稳定性。 关键词 带钢热连轧，负荷分配，轧制力比例，轧制稳定性 Research and Application of a New Method of Load Distribution for Hot Strip Mill Li Weigang (College of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China) Abstract A new method of online load distribution for finishing trains of hot strip mill was proposed, which combined reduction mode and rolling force mode of load distribution coefficient method. The new method determined the initial value of thickness distribution based on the reduction mode of load distribution, and then used the CLAD algorithm for the rolling force mode of load distribution to make rolling force per pass reduce by a certain percentage, lastly used the reduction range determined by reduction mode to limit the results of the rolling force mode of load distribution. The new method has been successfully applied in Ningbo Steel 1780 hot rolling production line, and the online application validates the new method with the advantages such as fast computing speed and excellent convergence performance. It reduces the fluctuation range of reduction per pass in finishing mill and most likely makes rolling force per pass decrease in proportion, effectively improves ro