Leakage Flux Detector

摘要

The leakage magnetic flux flaw detection unit faces the steel strip K and is provided with a rotating disk rotatably supported, respectively, at different positions in the rotational direction of the rotating disk, and direct current magnetization of the steel strip K in the magnetization direction; In addition, it has a plurality of defect detection heads for detecting leakage magnetic flux leaking from a defect on the line by direct current magnetization. At least one of the plurality of defect detection heads is different from the other defect detection heads in an inclination angle between a tangent of a rotational trajectory at an installation position of the defect detection head and a magnetization direction.