REDUCTION OF THE STRIP TENSION OF ROLLING STOCK BETWEEN TWO ROLLING UNITS TO A MINIMUM

摘要

The invention relates to the reduction of the strip tension of rolling stock (1) between two rolling units to a minimum. The invention is based on the object of making it possible to reduce the strip tension between two successive rolling units to a minimum in a simple manner. This object is achieved by a method having the following method steps: transporting the rolling stock (1), by means of a roller table (5), between two rolling units (2, 25) which are in engagement with the rolling stock, wherein a rolling stock loop (6) is formed in a depression (26) arranged in a section (27) of the roller table (5) between the two rolling units (2, 25) , and the rolling stock loop (6) is supported by the roller table at least in one off-center portion (13, 14) of the section (27), wherein the supporting line (23) of the roller table (5) in this portion corresponds to the catenary curve of the free span; detecting a measured value of a loop depth (18) of the rolling stock loop (6) by means of a measuring device (7); calculating a desired value of the loop depth (18), in particular depending on the material, thickness and temperature of the rolling stoc] (1), such that the desired value corresponds substantially to the free span; controlling the main drives and/or the gap adjustment of the rolling units (2, 25) by means of a control device (10) taking the desired value and the measured value of the loop depth (18) into consideration, such that the loop depth (18) corresponds as far as possible to the desired value. (Figure 1)