| 摘要 |
<p>PURPOSE:To improve the working accuracy of thickness reducing work that is executed at the time of joining billets mutually and to enable joining over the whole area in the width direction in finish rolling by revolving rolls in synchronism with the transportation of the billet and pressing the projections provided on the surface of these rolls against the biilet. CONSTITUTION:The projections 3a, 3b are provided on the outer periheral surfaces of rotors 2a, 2b and thickness reducing work is executed by acting these projections 3a, 3b in the end parts in the width direction of the billet 1 in accordance with the resolution of the rotors 2a, 2b. Then, since only the projections 3a, 3b are made to act on the billet 1 at the time of thickness reducing work, unnecessary forces are not added on worked parts, working accuracy is greatly improved and, consequently, defective joining is not caused in the joining treatment of the billet 1. Then, hot finish rolling is stably executed under joining over the whole area in the width direction.</p> |
