LEAKAGE MAGNETIC FLUX FLAW INSPECTION DEVICE

• Main Author: MATSUFUJI YASUHIRO
• Format: Patent
• Language: Chinese; English
• Published: 30.11.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

In this invention, a leakage magnetic flux flaw inspection unit comprises a rotatably supported rotation disk that faces a steel strip K and a plurality of flaw detection heads that are installed at different positions in the rotation direction of the rotation disk, DC-magnetize the steel strip K in a magnetization direction, and detect leakage magnetic flux that is made to leak from a linear flaw by the DC magnetization. At least one of the plurality of flaw detection heads has an inclination angle that is different from those of the other flaw detection heads, the inclination angle being an angle between the tangent to the rotation path at the installation position of the flaw detection head and the magnetization direction. 漏磁探伤单元具有：面对钢带K并以可旋转的方式被支承的旋转盘；和多个缺陷检测头，其分别设置于旋转盘的旋转方向上的不同位置，以磁化方向对钢带K进行直流磁化，并且探测由于直流磁化而从线状缺陷泄漏的漏磁。多个缺陷检测头中的至少一个的倾斜角度与其他缺陷检测头不同，所述倾斜角度为在缺陷检测头的设置位置处的旋转轨道的切线与磁化方向之间的倾斜角度。