JPS54133461A - Rolling mill provided with sheet camber straightener - Google Patents

Abstract

PURPOSE:To prevent the camber at the tip of the sheet, and to increase the front tension, by installing the sheet camber straightener on the exit side of the different-speed rolling stand. CONSTITUTION:The sheet 4, being rolled between upper and lower work rolls 2, 3, rotating at different speeds, elongates in the side contacting with lower high speed work roll 3, and cambers to the side of upper low speed work roll 2. However, the tip of the sheet 4 is fed into the gap of the rolls 6 of the straightener 5, under the condition that the camber is being restricted by the guides 9, and the sheet camber is straightened. In case of the different-speed rolling, the neutral point on the entry side and the neutral point on the exit side are placed at the entry and the exit of the rolling stand; on purpose to contrive the reduction of the rolling load, the front tension is required to increase; however, when the sheet 4 is passed through above straightener 5, the front tension can be given to the sheet 4, so that the front tension can be increased by the straightener 5.