METHOD AND DEVICE FOR CONTROLLING TENSION OF HOT ROLLED STEEL STRIP BETWEEN WELDER AND ROLLING MILL IN CONTINUOUS HOT ROLLING EQUIPMENT

摘要

An object of the present invention is to prevent the splice from being broken by excessive tension momentarily by absorbing the tension fluctuation generated during the joining period and the finishing mill by the motor load variation when joining the rear end of the preceding material and the leading end of the following material. The present invention provides a method and apparatus for controlling tension between a bonder and a finishing mill in continuous hot rolling so that the joined bar can be rolled normally. ; Therefore, the present invention detects the position of the preceding material and confirms whether the end of the preceding material reaches the inlet of the jointer, and when the end of the preceding material reaches the inlet of the jointer, elevates the table roller between the jointer and the finishing mill by the end of the preceding material. Forming a loop, detecting the position of the trailing material, and lowering the table roller between the jointer and the finishing mill when the tip of the trailing material reaches the inlet of the jointer. Provided is a method for controlling the tension of steel sheets between rolling mills. ; Joiner, finishing mill, table roller, detector, lifting section