基于红外热成像技术的管道激光/电弧复合焊质量在线监测系统

Laser-arc hybrid welding quality monitoring system for pipeline based on infrared thermal imaging analyzed technology

摘要: 利用福禄克RAYPi20HTRC红外热像仪，获取焊接熔池的红外热成像图像，通过软件对焊接熔池热成像图像进行处理，依据焊接熔池温度梯度分布对当前时刻焊接成型和焊接质量进行判断，识别和判断焊接缺陷，利用算法和程序对焊接质量进行评估，并记录当前的焊接时间和焊接点位，生成焊接记录。系统经过油气管道激光/电弧复合焊接应用试验具有运行稳定、质量评价与缺陷判定准确的特点，可以为现场焊接质量监测和后续焊接质量检测提供重要参考，具有重要工程应用意义。

Abstract: In order to acquire the infrared thermal image of the weld pool, Fluke RAYPi20HTRC infrared thermal imager was used in laser-arc hybrid welding process of pipeline. The infrared thermal image was analyzed based on the temperature gradient distribution of the weld puddle. The welding quality was evaluated and the weld defects were recognized by the program. And the time-space information of welding quality was recorded in real time. Laser-arc hybrid welding process quality monitoring experiment of pipeline shows that it works in a stable operation and accurate quality evaluation and defect reorganization. It can provide the important reference for on-site welding quality monitoring and weld quality testing.