Energy-saving rolling mill train and energy-saving process for operating a combined casting and rolling station

摘要

In a rolling mill train (2; 30; 56) for processing rolling stock (4, 32), at least three rolling stands (10) are directly adjacent in the rolling direction and are driven by electric motors (20) having superconducting windings. It is thereby possible to keep the distances between the rolling stands smaller than with conventional electric drives, thus reducing energy losses during the rolling process. A combined casting and rolling station (40), which is equipped with such an electric motor (20) in the rolling stands, is configured and/or operated efficiently in terms of the required heating power.

主权项

1. A rolling mill train for processing rolling stock, comprising
a plurality of rolling stands immediately adjacent to one another in a rolling direction, wherein each rolling stand includes at least a first working roll and a second working roll for processing the rolling stock, a plurality of electric motors with superconducting windings arranged to a side next to the rolling stands, wherein, for a first one of the rolling stands, a first one of the plurality of superconducting electric motors is connected only to the first working roll of the first rolling stand to drive only the first working roll of the respective rolling stand and a second one of the plurality of superconducting electric motors is connected only to the second working roll of the first rolling stand to drive only the first working roll of the first rolling stand, such that each of the first and second superconducting electric motors is connected to exactly one working roll, the first and second electric motors being arranged on the same lateral side of the first rolling stand, and wherein for a second one of the rolling stands, both the first and second working rolls of the second rolling stand are mechanically coupled via a branching transmission that is connected to a shaft of a single one of the electric motors, such that the single electric motor drives both the first and second working rolls of the second rolling stand.