| 摘要 |
PURPOSE:To join sheet bars and to enable the fully continuous rolling thereof, by superposing, welding and press sticking the end of the preceding sheet bar and the end of the succeeding sheet bar during traveling and pressing the superposed parts so as to have the same thickness as the thickness of the sheet bar. CONSTITUTION:While a roughly rolled sheet bar is under travel over table rolls installed between a final rolling mill and a finishing mill, a succeeding sheet bar 2 is accelerated so as to follow up a preceding sheet bar 1 until the forward end of the succeeding sheet bar 2 is superposed at about 200-300mm. on the rear end of the preceding bar 1. The superposed parts are then pressed under about 30 ton pressure with upper and lower pressing members 3, 3' having electrodes while said members are moved at the same speed as the speed of the sheet bars. Then, electricity is conducted between the electrodes of the members 3, 3' to join the superposed parts by resistance welding and to press the superposed parts to the same thickness as the thickness of the sheet bar 1, whereby the fully continuous rolling is accomplished. |
