Steel pipe magnetic powder inspection fluorescent image detection apparatus and detection method

Abstract

The invention provides a steel pipe magnetic powder inspection fluorescent image detection apparatus and detection method. The detection apparatus comprises a steel pipe motion control system, a camera, an ultraviolet flash lamp containing an ultraviolet optical filter, a fluorescent optical filter installed before the lens of the camera, a magnetic powder image electric control system connected with the steel pipe motion control system and a monitoring computer connected with the magnetic powder image electric control system, wherein the magnetic powder image electric control system is also connected with the camera and the lens, and the monitoring computer is connected with the camera and a production management system. With the detection apparatus and detection method, the problem of poor imaging quality caused by weak magnetic powder fluorescence, insufficient brightness, complex steel pipe shapes, insufficient depth of field and motion smear of a steel pipe is overcome, fluorescent steel pipe images with high brightness, good size resolution, distinct gradation, low noise and high quality are obtained, and displaying, storage, retrieval and playback of fluorescent steel pipe images, detection of suspected defects and further confirmation of flaw detection defects of the steel pipe can be realized.

Description

technical field [0001] The invention relates to an image detection device and a detection method, in particular to a magnetic particle inspection fluorescence image detection device and a detection method. Background technique [0002] Magnetic particle testing technology has been widely used in the detection of defects such as cracks on the surface and near the surface of ferromagnetic materials. The sensitivity of surface detection is higher than that of ultrasonic and ray testing. At present, the observation of magnetic particle defect images is generally done manually. Long-term observation will cause physical fatigue to the eyes, resulting in problems such as reduced efficiency and missed inspections. Surface defect inspection in steel pipe production is an important quality inspection process in steel pipe production, and this method of manual magnetic particle inspection is also used now. The existing inspection method is to apply a magnetic field to the measured par...

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Problems solved by technology

[0009] The purpose of the invention is to provide a fluorescent image detection device and method for magnetic particle flaw detection of steel pipes, so as to solve the problems caused by too weak magnetic particle fluorescence, insufficient brightness, complex shape of steel pipes, insufficient depth of field, and smearing of steel pipes during on-line flaw detection of steel pipes. To solve the problem of poor imaging quality, obtain high-quality fluorescent images of steel pipe end faces with high brightness, good size resolution, clear layers, and low noise, and can realize the display, storage, retrieval and playback of fluorescent images of steel pipes, as well as the detection of suspected defects, and Can further confirm flaw detection defects of steel pipes

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