| 摘要 |
PURPOSE:To eliminate the need for installing more cooling bed in rolling steel bars by two strand system, by transporting two strands of rolled steel bars simultaneously outputted from the final rolling mill to the plural cooling grooves of a platen at the same time, and laterally shifting the bars to introduce them to a line of cooling bed. CONSTITUTION:Two strands of steel bars 15a, 15b having prescribed shapes respectively are formed at the final mill 6 of a group of finish mills 1-6. The former bar is transported by a line table 7 and is laterally slided to an adjoining lifter 16 to be transferred to a chute 17 by lifting it with the aid of the lifter 16, and is laterally shifted to a cooling groove 9a of cooling grooves 9a-9e of a platen 9 placed at the inlet side of a cooling bed 11. On the other hand, the steel bar 15b is transported to a guide groove 18 and is advanced by pinching it with the aid of a pinch roll 19 at intervals of a given time after the tail end of the bar 15b passes through a detector 20. The rotating speed of the roll 19 is synchronized to that of the mill 6, and the bar 15b is transferred to the groove 9b to stop at the position where the front tip of the bar 15b is trued up to that of the bar 15a. Both of the bars are laterally shifted in sequence on the platen 9 by a movable lobe and are introduced to the bed 11, then the bars after being cooled are transported to the next stage by a run out table 13. |
