Method for processing rolling stock in a rolling mill train

Abstract

The method involves assigning variable speed control to roller (13) of each roll stand (4) of rolling train (2). A simulated load torque is supplied to control circuit of drive units (8) depending on actual load moment, based upon application of real load torque to control circuit of drive units for speed control of drive units.

Description

technical field [0001] The invention relates to a method for processing a rolling stock in a rolling mill train with at least two rolling stands each having at least one roll, wherein each rolling stand is assigned a separate drive unit. Background technique [0002] During the processing of rolling stock, e.g. when processing steel or different metals in the form of so-called slabs or billets, the rolling stock passes through a rolling mill train with several rolling stands, wherein the rolling stock is rolled in several passes Made into strip or wire. When rolling the wire rod, a rolling stand is used which has two grooved roll rings placed on top of each other as rolls, the grooved rolls having holes of alternating circular and elliptical design, the cross-section of which is in each Decrease after pass. Thus, round wires are manufactured from billets with an almost square cross-section. [0003] In order for the rolling stock to be rolled to the desired thickness or ...

AI Technical Summary

Problems solved by technology

This has the result that the rotational speeds of the individual drives or rolls are no longer synchronized, that is to say no longer work in a predetermined rotational speed ratio with respect to each other

This can lead to tensile or compressive loads and thus to breakage of the wire or entanglement of the rolled stock between the individual rolling stands

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