On the foundation of taking equipment and production technology into consideration,we present a set of combined setting technology of the parameter of the strip suit to cold reduction mill of roll four and framework five。Then the parameter of the strip was controlled combined and coordinated of framework 1-5. On the one hand,it ensures the function of the force of the bending roll not cancel out mutually,and enhances the controlled effect of the force of the bending roll in the strip,on the other hand, there will not be new extra and partial shape wave under the complex effect of the force of the bending roll.Meanwhile there will not be the problem that the force of the bending roll in some parts get too high even overall loading while the other parts get get too low in the setting procedure.While improving the lifespan of the fluid cylinder, the adjusting rest of the force of the bending roll get increased. While the related technology has been adopted by field engineering, we have achieved excellent result, and there is the value for more expanding.

In the foundation of generous field test and theoretical research, we presented a calculated model of middle thickness in cold tandem mill by combining applied mathematical theory and production technology and taking advantage of Taylor series expansion, matrix analysis, Newton iteration method and other mathematical methods. This model was used for setting original middle thickness on 1220 cold tandem mill in some plant. After field usage, the result was fine and correlative precision was over 90%. It completely satisfies required precision in project and has the value to be further popularized and applied.