Method and device for adjustment of one or several roll segments, in a continuous casting plant for metals, in particular for steel materials

摘要

The invention relates to method and to a device for adjusting one or more roll segments (1) in a continuous casting installation for metals, especially for steel materials. The rolls (1a) of said installation are adjusted in the segment upper frame (2) and the segment lower frame (3) on frame cross members (5) by pairs (4) of hydraulic piston-cylinder units in a position- and/or pressure-controlled manner. Operation for guiding and/or pressing the casting strands (6) is switched from a position-controlled to a pressure-controlled operation when the pressure within the respective pair (4) of piston-cylinder units reaches a predetermined maximum value. The invention provides for an improved reaction to such a switching operation. To this end, the piston-cylinder unit of every roll segment (1) is operated, in the case of overload, in subsequent steps at a reduced pressure or in a pressureless switching mode until the switching mode is reached in which the segment upper frame (2) can be opened to some extent.