| 摘要 |
<p>PURPOSE:To assure a uniform width size irrespectively of the thickness of a billet by moving a moving flange of a rolling roll along a barrel surface to control the length of the barrel surface then charging a material to be rolled between the rolling rolls. CONSTITUTION:The thickness h0 of a slab 3 before it is charged to a rolling mill 10 is measured with a thickness measuring device 26, and the signal thereof is inputted to a calculator 27. The signal is outputted to a flange control device 28 and the rotating quantity of a motor 21 for moving a flange is controlled by the device 28. A screw 17 is rotated by as much as the rotating quantity until the space between a moving flange 16 and a stationary flange 15, that is, the length H of a barrel surface 14 is made equal to a thickness h0. A vertical roll 12 is rotated in this state with a driving motor 31 provided with a tachometer 29 and a speed control device 30, and the slab 3 is charged between the rolls 12 and 12, whereby the slab is subjected to cross rolling. The rolled slab is then charged to a horizontal mill 32.</p> |
