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本文应用红外热成像技术对焊接过程进行了研究.试验表明,红外热象仪能直接看到电弧下的焊接熔池的温度分布,因此以它为温度传感器作为弧焊机器人焊接系统的一环,比电磁、激光等其他温度传感器简便、快速、正确、可靠,有利于实时检测和监控. 本文研究指出,红外热象图可以实时地动态地显示焊接熔池及热影响区的表面温度.红外热剖面线的形状和尺寸随着焊接输入热、熔深、熔宽的变化而相应地变化,并取得一组关系曲线.如果通过焊接过程的控制使焊缝熔深、熔宽保持不变,将使焊接质量提高到前所未有的新水平.
In this paper, infrared thermography was used to study the welding process.The experiments show that the infrared thermometer can directly see the temperature distribution of the weld pool under the arc, so as its temperature sensor as a part of the arc welding robot welding system, Compared with other temperature sensors, such as electromagnetic and laser, it is easy, fast, accurate and reliable to detect and monitor in real time.In this paper, the research shows that infrared thermography can dynamically display the surface temperature of weld puddle and heat affected zone in real time. The shape and size of the section line change correspondingly with the change of welding input heat, penetration depth and melting width, and obtain a set of relation curves.If the weld penetration and melting width remain unchanged through the control of the welding process, The welding quality to an unprecedented new level.