Method and apparatus for measurement of the tensile force which acts on a moving tube or a moving rod acts

摘要

A control method for a rolling mill for rolling a pipe or a bar, the / which is moved into a moving direction, with the following steps:- Determination of the speed of the movement of the surface of the tube or rod in the direction of movement at a first measuring device (first measured value) and- Determination of the speed of the movement of the surface of the tube or rod in the direction of movement, on a second, in the direction of movement according to the first measuring device arranged measuring device (second measured value) and- Determination of a an input variable for a controller on the basis of a comparison of the first measured value with the second measured value.