| 摘要 |
PURPOSE:To enable continuous rolling for steel by the conbination of welding for connecting slabs with a high energy beam and joining by hot rolling. CONSTITUTION:The rear end part of a preceding steel sheet 1 and the tip part of the following steel sheet 2 are seamed with the high energy beam and, after that, stronger joining is realized in the hot rolling stage. The means is as follows: In the rolling stage, the tip and rear end of each of steel ingots are worked into a wedge-shape, the rear end part of the preceding steel ingot and the tip part of the following steel ingot are overlapped and preferably a brazing filler metal is held between the overlapping parts. The high energy beam is radiated on the overlapped part from the vertical direction, one place, two or more places in the breadthwise direction or rolling direction are welded and next the slabs are hot rolled. |
