Fluorescent magnetic particle surface defect imaging detection system for multi-size and multi-structure workpieces

Abstract

The invention discloses a fluorescent magnetic powder surface defect imaging detection system for multi-size and multi-structure workpieces. The system includes a detection bed, a workpiece centering and clamping device, a workpiece movement mechanism, a magnetic suspension liquid spraying and recovery device, a magnetization device, Ultraviolet light source, automatic detection control unit, image acquisition equipment and its multi-degree-of-freedom motion mechanism, image processing unit; workpiece centering and clamping device is used to fix the workpiece and keep its axis consistent with the vertical direction of the optical center of the acquisition equipment; automatic detection control unit It is used to control the detection methods of different types of workpieces; the magnetic suspension spraying and recovery device, and the magnetization device are used to form surface defect magnetic marks; the workpiece rotary motion mechanism, ultraviolet light source, and image acquisition equipment cooperate with each other to obtain different positions and different surface images of the workpiece , and sent to the image processing unit to obtain defect information. The invention can solve the problem of magnetic particle imaging detection of workpieces with different structures and different geometric sizes, and the detection is safer, faster, more accurate and intuitive.

Description

technical field [0001] The invention relates to magnetic particle non-destructive testing technology, in particular to a fluorescent magnetic powder surface defect imaging detection system for multi-size and multi-structure workpieces. Background technique [0002] Magnetic particle inspection technology refers to the identification of defects on the surface and near surface of ferromagnetic workpieces without destroying the detected workpieces, such as cracks, hairlines, pores, inclusions, folds, etc., with high detection sensitivity and can be directly displayed The shape, position and other information of the defect, the detection result is intuitive, and the detection cost is low. [0003] Traditional fluorescent magnetic particle testing is done manually by workers. The labor intensity of workers is high, the testing experience is also different, and the mental state is easily affected by the working environment, resulting in low testing efficiency, poor consistency of ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fluorescent magnetic particle surface defect imaging detection system for multi-size and multi-structure workpieces to solve the technical problems of magnetic particle detection of workpieces with different bonding sizes, curved surfaces and stepped surfaces, and to achieve the surface defect size of ferromagnetic workpieces Quantitative purposes with other parameters such as position

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