Elucidation of high-power disk laser welding phenomena by simultaneously observing both top and bottom of weldment

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• 作者：Ziqin Chen ; Xiangdong Gao ; Seiji Katayama…
• 关键词：High ; power laser welding ; Full ; penetration condition ; Color image segmentation algorithm ; Welding characteristic detection
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：88
• 期：1-4
• 页码：1141-1150
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design;
• 出版者：Springer London
• ISSN：1433-3015
• 卷排序：88

文摘

A method is introduced to investigate the interrelationships among welding penetration rate, spatter number, metallic vapor, and welding quality by simultaneously observing both top surface and bottom surface of low carbon steel weldment during high-power disk laser welding. Color image segmentation algorithm which is based on K-means clustering algorithm is used to process the image data. Different welding conditions including different weld power, weld speed and weld joint width are applied, and the microstructures of fusion part are also analyzed. Experiment results show that the color image segmentation algorithm is effectively for recognition of welding penetration condition, and welding quality is better when the penetration rate is around 74.5 %.