Abstract：Based on large scale of field experiment and theory research, and by utilizing mathematical treatment method of Taylor’s series expansion and neglect the highorder term to simplify the nonlinear problem into the linear problem. A model of calculating strip steel intermediate thickness in the loadquickset cold continuous rolling was established by using the coherent principle of Newton iteration method, which was applied in on the 1220mm fivestand cold tandem mill in Bao Steel tandem cold mill strip thin company. Economic benefit is greatly improved.
