A method for producing slabs of steel

A method of producing slabs from steel, wherein the strand leaves a mold with enclosed by a strand shell melt and in a subsequent strand guide the mouth width of stored in segments with upper and lower frame guide rollers can be adjusted by connecting them adjusting continuously with successive steps, where a) the jaw width is changed by means of oscillation about a center line of the mouth width in the manner that dynamic influences on the guide rollers is negligibly small, b) the amplitude of the mouth width oscillation is set to a size which does not cause plastic deformation of the strand shell, c) detects the current mouth width of guide rollers, and d) at the same time determines the actuating force of the adjusting elements as well as the amplitude of the adjusting force, and e) is performed the set mouth width with increasing amplitude of the setting force to a predeterminable amount and / or pressure control via at least one adjusting element, characterized, that of a plurality of force / travel measurements along the strand a ...