Laser Online Inspection Method for Welding Appearance Quality Defects

　　In modern industrial production, welding is a common process used for connecting metal components and manufacturing various structures. However, quality control during welding has always been one of the challenges faced by the welding industry. To ensure that the quality of welded joints meets requirements, various inspection techniques are continuously researched and applied. Among them, laser inspection of welding appearance quality has attracted widespread attention as a modern and efficient inspection method.


　　Laser inspection of welding appearance quality is a modern welding quality inspection method that utilizes laser technology to achieve high-precision and high-speed detection of the appearance characteristics of welded joints. This method typically combines computer vision and laser imaging technology to real-time detect external defects of welded joints, such as cracks, voids, and burn-through, and it has the advantages of non-contact, high efficiency, and high precision.

　　Laser inspection of welding appearance quality typically includes the following:

　　Laser imaging system: Using a laser imaging system to capture images of welded joints. This system typically consists of laser emitters, optical lenses, CCD cameras, and other components, capable of obtaining high-resolution images of welded joints.

　　Image processing and analysis: Processing and analyzing the images obtained by the laser imaging system using image processing algorithms to extract feature information of welded joints, such as shape, size, and defects.

　　Defect detection: Utilizing image processing techniques to detect defects in the images of welded joints. Common defects include cracks, voids, and burn-through. The system classifies and locates defects in welded joints based on preset algorithms and standards.

　　Quality assessment: Evaluating the quality of welded joints based on the detected defect information. The system can determine whether the welded joints meet preset standards, such as welding process specifications and customer requirements.

　　Data recording and report generation: Recording the detected data and generating inspection reports. Reports typically include defect information and quality assessment results of welded joints for subsequent quality management and traceability.

　　Laser inspection of welding appearance quality is an efficient, precise, and non-contact method for weld seam inspection. It utilizes the characteristics of lasers, combined with automation technology and computer vision algorithms, to achieve comprehensive and detailed inspection of weld seam appearance quality. It has been widely applied in automated welding production lines, improving the reliability and consistency of welding quality, reducing labor costs, and increasing production efficiency.