DEFECT INSPECTION DEVICE FOR STEEL PLATE AND DEFECT INSPECTION METHOD FOR STEEL PLATE

摘要

To provide a defect inspection device for a steel plate and a defect inspection method for a steel plate, capable of highly accurately detecting a surface defect, even when the type of a steel plate P is changed so as to greatly change a surface property like a GA steel plate and a GI steel plate.SOLUTION: A defect inspection device for a steel plate 1 according to an embodiment of the present invention is a defect inspection device for a steel plate which irradiates the surface of the steel plate P with illumination light from a light source 2, photographs the surface image of the steel plate P irradiated with the illumination light by an imaging apparatus 3, and detects the surface defect of the steel plate P on the basis of the luminance value of the surface image and includes a gloss meter 4 which measures the glossiness of the steel plate P and a control device 5 which adjusts the position and/or angle of at least one of the light source 2 and the imaging apparatus 3 according to the glossiness of the steel plate P measured by the gloss meter 4.SELECTED DRAWING: Figure 3