Method and casting and rolling plant for casting and rolling endless continuous casting billets

Abstract

The invention relates to a method for operating a cast-rolling plant 100 comprising a continuous casting machine 110 and a corresponding plant for casting and rolling endlessly cast slabs 200, wherein the cast-rolling plant comprises a continuous casting machine 110 and is arranged in a continuous The rolling train after the casting machine. The method has the steps of actuating the drive 124 for the rolls of the first rolling stand 122_1 of the rolling train by the drive control 124 as a response to the target value preset by the rolling pass schedule model 126 . Furthermore, the drive 114 of at least one strand guide roller 113 is actuated by a strand guide roller drive control 117 as a response to a theoretical value preset of the continuous casting machine drive model 115 . In order to superordinately synchronize the drives of the continuous casting machine and of the rolling train with respect to a constant mass flow of the same value in the two plant components, the invention provides that the rolling pass table model 126 is specified for the first The theoretical rotational speed of the drive part 124_1 of a rolling stand 122_1 is preset as a theoretical value; and the continuous casting machine drive model 115 predetermines the theoretical torque of the drive part 114_i for at least one driven strand guide roll 113_i , as the theoretical value preset.

Description

technical field [0001] The invention relates to a method and a casting and rolling plant for the casting and rolling of endless cast strands from metal, in particular steel. Background technique [0002] For example, in figure 1 A known casting and rolling plant for casting and rolling endless cast slabs is shown in . The casting and rolling equipment 100 shown here comprises a continuous casting machine 110, a rolling train 120 connected after the continuous casting machine, a cooling section 170 connected after the rolling train, a dividing device 180 connected after the cooling section, and a Coiler 190 for rolling up continuous casting billet 200 . Specifically, the continuous casting machine 110 includes a mold 111 , a slab guide 112 arranged after the mold 111 , and typically a dividing device 180 . The splitting device 180 is used for splitting the so-called cooling cast slab. At the initially cooled walls of the mold 111 , the melt solidifies in the mold and in t...

AI Technical Summary

Problems solved by technology

However, said patent document does not propose an exhaustive implementation of this technical teaching

However, a more detailed consideration of this solution reveals the disadvantage that the main drive with a powerful rolling train of several megawatts must follow the implementation of a continuous casting machine with a drive of only a few kilowatts, which predetermines The exit speed of continuously cast billets from the continuous casting machine

This is disadvantageous in terms of control technology, since the performance in terms of control technology, ie the dynamics of the drive, decreases with the size of the motor

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