| 摘要 |
<p>PURPOSE:To eliminate unstability in rolling of sheet materials, etc., and to permit stable shape control by executing thick plate rolling in accordance with the reference pass schedules registered by sizes and quality of rolled stocks. CONSTITUTION:The material quality, finish sheet thickness, width, etc., of a material 1 to be rolled are first inputted via an input device 5 to a memory and arithmetic unit 6 in the case of rolling the sheet material having a sharp temp. drop during rolling or material having high temp. dependency of deformation resistance in thick plate rolling. The memory and arithmetic unit 6 determines the applicable group from the material quality sections which are previously stored by groups according to the change characteristics of the deformation resistance with temp. in accordance with the data inputted thereto. Said unit selects the reduction pattern numbers by the finish sheet thickness and width stored for each of the material quality sections from the finish sheet thickness and width data of the material 1. The unit reads out the stored reference reduction pattern and starts rolling by determining the reduction pattern of the shape pass, i.e., final 3-4 passes.</p> |
