| 摘要 |
<p>PURPOSE:To obtain a specified product thickness by maintaining the specified rolling load and backward tension of a final stand constant, controlling the draft positions of a 1st stand and the stands exclusive of the final stands to make the specified backward tension constant and controlling the number of revolution of the rolls of the final stand and the stand before this stand. CONSTITUTION:The draft position of the final stand is controlled, by which the rolling load thereof is maintained constant. The number of revolution of the rolls of the final stand is controlled, by which the backward tension thereof is maintained constant. The draft positions of the 1st stand and the stands excluding the final stand are controlled, by which the backward tension thereof is maintained constant. The numbers of revolution of the rolls of the final stand and the stand before this stand are controlled, by which the sheet thickness is maintained constant. Not only the operations are stabilized but also the shape of the rolled product is stabilized in the rolling at a high coefft. of friction and the rolling of a hard material. The sheet thickness is simultaneously kept within a permissible range and the quality of the thin plate product is improved.</p> |
