焊接熔池图像采集及边缘几何形态研究  

Image acquisition and edge geometry of welding pool

作　　者：沈莹吉[1] 姜梦[2] 冯杰才 SHEN Yingji;JIANG Meng;FENG Jiecai(School of Mechanical Electronic and Rail‐Traffic,Zhejiang Fashion Institute of Technology,Ningbo 315100,China;State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin 150001,China;School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200444)

机构地区：[1]浙江纺织服装职业技术学院机电轨道与交通学院,浙江宁波315100 [2]哈尔滨工业大学先进焊接与连接国家重点实验室,黑龙江哈尔滨150001 [3]上海大学机电工程与自动化学院,上海200444

出　　处：《兵器材料科学与工程》2024年第3期69-73,共5页Ordnance Material Science and Engineering

基　　金：先进焊接与连接国家重点实验室开放课题研究基金(AWJ-22M02)。

摘　　要：基于MAG焊电弧光谱特点,用视觉传感配合CCD相机和滤波减光系统,采集MAG焊熔池图像;通过同步对比试验,研究熔池图像圆形度与边缘形态关系。结果表明:正常工艺时,熔池边缘较规则、光滑,熔池图像圆形度介于0.56~0.65;焊接电流过大或保护气体不足时,熔池图像圆形度比正常值小,图像边缘凹凸不平。熔池图像圆形度越小,意味着熔池边缘更不规则或锯齿状,通过圆形度数值大小可预判熔池边缘信息,为焊接过程的控制和焊接质量的评估提供思路。Based on the spectral characteristics of MAG welding arc,visual sensing combined with CCD camera and filter dimming system were used to collect the image of MAG welding pool.The relationship between the image circularity and the edge morphology of welding pool was studied by synchronous comparison experiment.The results show that the edge of welding pool is regular and smooth,and the roundness of welding pool image is 0.56-0.65.When the welding current is too large or the shielding gas is insufficient,the roundness of the welding pool image is smaller than the normal value,and the edge of the image is uneven.The smaller the roundness of the welding pool image,it means that the edge of the welding pool is more irregular or jagged.The edge information of the welding pool can be predicted by the value of the roundness value,which provides ideas for the control of the welding process and the evaluation of welding quality.

关 键 词：MAG焊 视图传感 图像采集 熔池几何参数 

分 类 号：TG409[金属学及工艺—焊接]