| 摘要 |
<p>PURPOSE:To prevent a joint part from breaking to stably pass a strip by exchanging tension control of a material to be rolled and angle control of a looper into a control different from a rolling state of a stationary part for rolling before the joint part enters a mill. CONSTITUTION:A is a state before the strip passes the part passes, it is a stationary part before A and the motion of the looper is stabilized to control the tension of a tension meter system. When the neighborhood of the joint part is detected by a tacking device, the looper control is exchanged into 'a former control system' to increase the angle further. In this way, even when a variation occurs in mass flow, the tension is absorbed by the looper angle, turbulence of the tension is reduced and correspondence to variation of the loop accompanied with this can be carried out. This shows a state B when the joint point is being passed, C is a state after the joint part is passed and the tension meter system control is performed again.</p> |
