| 摘要 |
<p>PURPOSE:To improve the production efficiency of hot rolling and to reduce the required number of work rolls by maintaining a drafting condition obtaining a target sheet crown by adjusting a combination of a shift amount of work rolls and a bending force by a work roll bender. CONSTITUTION:Both a sheet crown controlling mechanism reversely shifting bottle-shaped upper and lower work rolls 3, 3 and a hot rolling mill provided with a work roll bender 5 are used. The rolls 3, 3 are reversely shifted to each other in the axial direction by a prescribed amount from shifted positions in the rolling for a preceding stock. A drafting condition to obtain a target crown is maintained by adjusting a combination of a shift amount of the rolls 3, 3 and a bending force by the bender 5. Thus, sheet crown controlling ability is improved at low equipment cost.</p> |
