| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inspection device which can stably inspect a dross defect of a molten metal plating steel plate by being separated from formation noise and a slight defect. <P>SOLUTION: A dross defect inspection device has defect determination means (defect determination device 18) for classifying extracted defects into a dross defect and other defects, in which an incident angle of light to be emitted from illumination means (floodlight 12) to the surface of a steel plate 1 is set to an angle between 50° and 80° to the normal direction of the steel plate 1, imaging means (imaging unit 14) is arranged on the same side as that of the illumination means (12) to a normal of the steel plate 1, and a light receiving angle of light to be received by the imaging means (14) is set to an angle between 0° and 40° to the normal direction of the steel plate 1. It is preferable that the defect determination means (18) determines the extracted defects into the dross defect and other defects based on at least one of area of the defects, image luminance of the defects, and forms of the defects. <P>COPYRIGHT: (C)2012,JPO&INPIT |
