| 摘要 |
<p>PURPOSE:To obtain desired srrips of a wide range of width sizes in a continuous hot rolling system for metallic strips by connecting the strips on the upper stream, providing an elongating device at the intermediate of a finishing mill system, and reducing the width. CONSTITUTION:A tension application type strip elongating device 6 consisting of at least one set of bridle rolls 3, 4 and a heating furnace 5 is provided in a suitable position of a finish rolling system of a continuous hot rolling installation for metallic strips. Thereby, the strips are elongated under high tension and is subjected to stable broadside reduction. At the same time, the strips are reheated and are held at hot rolling temp., thence they are rolled down to prescribed thickness in subsequent stands. At this time, in order to charge the strips continuously into the device 6, a connector 7 is provided on the upper stream of the system 2 or a roughing mill system 1 to connect the strips. By this mechanism, the number of the stands of the system 2 is reduced.</p> |
