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The study of roll system force relationships during asymmetrical rolling is of importance in determination of the direction and magnitude of the lateral roll forces directly connecting with the rolling stability, rigidity and loading conditions of a rolling mill. The results obtained by theory and experiment indicate that kinematical asymmetry in strip rolling creates lateral roll forces of significant magnitude depending on the angle of force inclination as affected by roll speed mismatch ratio i, pass reduction ?and the applied strip tensions AT. For optimum mill design and operation, front tension (or tension difference) in asymmetrical rolling should not exceed that required to preserve roll system stability and the appropriate values of i should be no higher than about 1.28 to avoid bearing overloading whilst still retaining in bulk the industrially important roll force reduction effect characteristic of cross shear rolling.
The study of roll system force relationships during asymmetrical rolling is of importance in determination of the direction and magnitude of the lateral roll forces directly connecting with the rolling stability, rigidity and loading conditions of a rolling mill. The results obtained by theory and experiment indicate that kinematical asymmetry in strip rolling creates lateral roll forces of significant magnitude depending on the angle of force inclination as affected by roll speed mismatch ratio i, pass reduction ?, and the applied strip tensions AT. For optimum mill design and operation, front tension (or tension in asymmetrical rolling should not exceed that required to preserve roll system stability and the appropriate values of i should be no higher than about 1.28 to avoid bearing over bulk while still retaining in bulk the industrially important roll force reduction effect characteristic of cross shear rolling.