为了提高冷连轧机厚度控制精度,针对冷连轧机生产过程中动态变规格超差长度现场存在的问题进行了研究。深入分析了动态变规格超差的形成机理,通过对二、三、四机架秒流量系统的建模和压下参数的优化完善,形成了动态变规格控制参数优化的方案,并使用仿真和现场试验的方式证明了其可行性。新方案的实施对于稳定生产过程中动态变规格过程发挥了积极作用,有效减少了实际超差长度。 In order to improve the thickness control accuracy of tandem cold mill, the field-existing problems of dynamic gauge gauge length in cold tandem mill production process were studied. The formation mechanism of dynamic gauge tolerance was deeply analyzed. Through the optimization and optimization of the second, third and fourth rack second-flow system modeling and optimization parameters, a dynamic variable gauge control parameter optimization program was formed. Using simulation and The way of field test proves its feasibility. The implementation of the new program has played an active role in stabilizing the process of dynamic change in the production process, effectively reducing the actual length of over-run.