| 摘要 |
<p>PURPOSE:To always maintain small edge drop in spite of rolling conditions and also to fully display controllability to sheet crown and sheet shape in a multi stage rolling mill. CONSTITUTION:In a rolling mill whose upper and lower work rolls 1, 2 are mutually inclined in the opposite direction in a horizontal plane to a line 17 perpendicular to the rolling direction, taper-shaped liner 30a, 30b, 31a, 31b are arranged between the housings 9a, 9b of rolling mill and upper and lower work roll chocks 5a, 5b and 6a, 6b and the inclined angles of the upper and lower work rolls 1, 2 are fixed at a specified angle of >=0.4 deg. by liners. The fixed inclination of the work rolls is used only for the purpose of reducing the edge drop of metal plate. The sheet crown and sheet shape of metal plate are controlled by a means other than the inclination of the work roll, for example, by work roll bending or by using work roll bending and roll shifting in the axial direction jointly.</p> |
