通过视觉技术获取焊接熔池的特征信息,可对焊接质量进行有效的实时监测。研究了焊接机器人系统混合气体保护焊焊接过程的特点,利用工业摄像头获取了清晰的熔池监测图像,并对不同焊接参数下平板焊接过程进行了实际监测试验。分析表明,视觉监测图像能够明显反映焊接外部质量的变化,对于内部质量如熔透深度的表征需要进一步的定量分析处理。 Through the visual technology to obtain the characteristics of welding pool information, the welding quality can be effectively monitored in real time. The characteristics of hybrid welding process of welding robot system were studied. The clear weld pool monitoring image was obtained by using industrial camera. The actual monitoring test of flat welding process under different welding parameters was carried out. The analysis shows that the visual monitoring image can obviously reflect the change of the external quality of the welding. The characterization of the internal quality such as the penetration depth requires further quantitative analysis.