Detection method and system for steel surface coating

Abstract

The invention discloses a steel surface coating detection method and system, the system comprises an eddy current array probe, a detection host and a computer device, the eddy current array probe is composed of an eddy current array coil sensor and an encoder, the detection host comprises a high-frequency signal excitation module, a signal conditioning module and a high-speed signal acquisition module, and the computer equipment is used for performing data processing, data storage and image display on data acquired by detection analysis software. The eddy current array detection system is adopted, appropriate detection parameters are selected through debugging, imaging detection of the metal sheet coating quality can be achieved, the eddy current array detection image is high in signal-to-noise ratio, the detection result can display two-dimensional and three-dimensional images at the same time, the coating quality can be represented more visually, accurately and effectively, and the detection accuracy is improved. The detection system can obviously distinguish the poor-quality area of the coating, and is helpful for quickly judging the position and size of the coating defect.

Description

technical field [0001] The invention relates to the technical field of metal surface detection, in particular to a detection method and system for a steel surface coating. Background technique [0002] In order to make the components have higher performance, such as high temperature resistance, oxidation resistance, corrosion resistance, fatigue resistance, radiation protection, etc., surface coating technology is usually used to coat a functional coating on the surface of the base material. At present, coatings with special protective effect have been widely used in aviation, aerospace, machinery, automobile, electronics, information technology and many other fields. The surface coating has a very important influence on the performance of the entire structure, and the local defects and damage of the coating often cause the failure and damage of the components and the whole equipment. Therefore, the detection and analysis of coating quality is of great significance. At pre...

AI Technical Summary

Problems solved by technology

At present, the main technologies used for non-destructive inspection and analysis of coatings include X-ray method, ultrasonic method, infrared thermal imaging method, infiltration method, etc., but the current methods cannot clearly and intuitively distinguish the quality of the coating during the detection process. Defective areas, the detection results are inaccurate, and the position and size of the steel surface coating cannot be quickly determined

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