Method and equipment for detecting slab surface defects and equipment abnormalities in continuous casting machines

摘要

To provide a detection method for slab surface defects and equipment abnormality, in a continuous casting step for a steel, capable of detecting slab surface defects caused by bleeding and/or capable of detecting the equipment abnormality of the mold or secondary cooling zone of continuous casting equipment causing the generation of slab surface defects caused by bleeding.SOLUTION: Provided is a detection method for slab surface defects and equipment abnormality in a continuous casting machine where the transverse section of a slab 15 cut by a slab cutting machine 19 provided at the outlet side of a continuous casting machine 1 is filmed by an optical filming apparatus 20, the cross-sectional shape of the slab transverse section is obtained from a filmed image, and, based on the obtained cross-sectional shape, slab surface defects and/or the equipment abnormality of at least either the mold and secondary cooling zone of the continuous casting machine is detected.SELECTED DRAWING: Figure 1