Siemens Aktiengesellschaft

Primetals Technologies Germany Gmbh

Dirk Krautwurst

Birger Schmidt

Matthias Kurz

Edmund Koh

A Steckel mill has a reversing unit for rolling a rolled product and winding furnaces arranged on the entrance side and exit side of the reversing unit. When rolling the rolled product in a region of a head of the rolled product, a target thickness of the rolled product is ignored, while measuring a current thickness and/or a hardness of the rolled product and comparing this with a setpoint value. One the measured variable reaches or is below the setpoint value, the reversing unit is operated with a view to achieving the target thickness of the rolled product. The Steckel mill is operated to allow for rolling of a cold, non-rollable piece of the rolled product, so that malfunctions are avoided and the usable part of the rolled product is as large as possible.

Method for operating a steckel mill

The invention relates to rolled material comprising a front and an end. The rolled material is rolled in a roll gap of a roll stand to a first desired measurement, beginning at the front of the rolled material. When the rolled material is being rolled in the roll stand, it is continuously determined by a control computer, which locates the position of the rolled material which is currently in the roll gap. When the position of the rolled material, which is directly in the roll gap, corresponds to a predetermined first modification position of the rolled material, which is arranged between the front of the rolled material and the end of the rolled material, the roller of the rolled material ends at a first desired measurement such that a first step is introduced into the rolled material on the first modification point.

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Erlangen, Germany

Dirk Krautwurst