JPS5499757A - Rolling mill - Google Patents

Abstract

PURPOSE: The rolling mill whose ability to control the crown, etc., is improved, by installing elevating upper and lower intermediate roll chocks, etc., above and under the elevating upper and lower work roll chocks.

CONSTITUTION: The rolling of the strip is performed by loading the bending force on upper and lower work rolls 10 and 13 while controlling the deflection of these work rolls 10,13. A part of the bending force, P₁ loaded on the upper backup roll chock 18 by the screw 20 is loaded on the upper work roll 10 through the upper backup roll 17 and upper intermediate roll 4; another part is loaded on the upper work roll 10 through the wedge or hydraulic cylinder 16, upper intermediate roll chock 5, and upper intermediate roll 4. On the other hand, the bending force P₂ by the wedge or hydraulic cylinder 16, or hydraulic cylinder 3 is loaded on the upper work roll 10 through the upper intermediate roll chock 5 and the upper intermediate roll 4; and the bending force P₃ by the hydraulic cylinder 9 or 15 is loaded on the upper work roll 10 through the upper work roll chock 11. As a result, the bending force P to be loaded on the upper work roll is given by P=P₁+P₂+P₃.

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