摘要
采用主动光源和光学窄带滤光片等辅助器件,利用高速摄像技术对光纤激光焊接过程中的熔池和小孔进行了拍摄,获得了较为清晰的熔池和小孔图像,以及不同激光功率下光纤激光焊接熔池和小孔的实际尺寸,可以为光纤激光焊接熔池和小孔的模拟提供可靠的参考依据。对高速摄像图片和焊缝熔深波动以及焊缝形貌进行了分析。结果表明:小孔前沿附近是光纤激光焊接过程中飞溅产生的主要区域;利用高速摄像可以监测焊缝的熔深变化;熔池温度最低的区域为熔池后部的中轴线两侧,而非熔池边界处。
The high-speed photograph technology,including the illumination source and bandpass filter,was utilized to shoot the molten pool and keyhole in the process of fiber laser welding,some clear images of them were obtained.The actual sizes of the molten pool and keyhole in the process of the fiber laser welding with different laser power were got,and these would provide reliable reference foundation for the simulation of the weld pool and keyhole in the process of fiber laser welding.The images,weld penetration and weld sharp were analyzed.The results showed that：the front of the keyhole is the main position where the spatters formed;the high-speed photograph technology can be used to monitor the weld penetration;the region of the molten pool which had the lowest temperature is the two sides of the axile wire of the rear part,but not the boundary of the molten pool.
出处
《电焊机》
北大核心
2010年第11期78-81,共4页
Electric Welding Machine
关键词
激光焊接
熔池
小孔
高速摄像系统
laser welding
welding pool
keyhole
high-speed photograph
