| 摘要 |
<p>PURPOSE:To make the roughness of plate surface uniform over the total length of a steel strip by obtaining the proper draft of the final stand so as to make the roughness of plate surface constant corresponding to the rolling speed preliminarily, and rolling down the final stand with this proper rolling force in the temper rolling of the steel strip. CONSTITUTION:At the time of temper rolling the steel strip 1 is with work rolls 2a, 2a' of two stand tandem temper rolling mills 2, the rolling speed signal detected by a rolling speed detector 3 connected to the work roll 2a' of the 2nd stand is transformed by a signal transforming unit 4. The proper rolling force is calculated by a storing and arithmetric unit 5 from the speed signal, the condition of rolled stock and the rolling force signal sent through a rolling force signal transforming unit 9 from a rolling force detector 8 attached to the rolling roll, added with the signal inputted by a plate surface roughness target value setting and inputting means 10. This calculated value is amplified with an amplifier 6 and outputted to a rolling force control mechanism 7, and the rolling is executed with the prescribed rolling force. The steel strip of uniform roughness and the size of cross-buckle can thus be obtained.</p> |
