Determining the status for strand-guiding rollers by means of vibration evaluation

A strand-guiding section of a continuous casting line,

• wherein the strand-guiding section is arranged downstream of a continuous casting mold of the continuous casting line,
• wherein the strand-guiding section has at least one strand-guiding roller for supporting a metal strand that is cast with the continuous casting mold,
• wherein the at least one strand-guiding roller is mounted in roller bearings in the strand-guiding section,
• wherein the strand-guiding section has at least one sensor device, which in turn has at least one vibration sensor which is acoustically coupled to the at least one strand-guiding roller or the roller bearings thereof, by means of which vibrations occurring when the at least one strand-guiding roller is rotated in the roller bearings are detected,
• wherein the at least one sensor device has an interface via which vibration data (SD) derived from detected vibrations are transmitted to an evaluation device,
• wherein the at least one strand-guiding roller is cooled internally by cooling water supplied to the at least one strand-guiding roller and the at least one vibration sensor is directly and acoustically coupled to the cooling water to detect the vibrations occurring when the at least one strand-guiding roller is rotated via direct contact with the cooling water.