基于红外热成像技术的管母线焊缝缺陷对发热影响研究

焊缝质量是影响管母线综合性能的关键因素。首先使用X射线数字成像系统对实验样品焊缝进行检测,确定了焊缝缺陷类型;再根据电磁感应原理对加工有不同焊缝缺陷的管母线实验样品分别进行通流实验;利用红外热像仪对焊缝周围温度进行定时测量;计算了各个实验样品焊缝位置和距离焊缝20 cm处的平均温差;绘制了不同负载下温差与加载时间的变化曲线。通过与无缺陷实验样品进行对比,得到了各种常见焊缝缺陷对管母线焊缝发热的影响规律,充分证明了利用红外热成像技术对管母线焊缝现场检测的可行性,为管母线焊缝质量现场红外检测提供了重要的参考依据。

Research on Tube Bus weld defects influence of heat generation based on infrared thermal imaging technology

Weld quality is a key factor affecting the overall performance of the tube bus. Firstly using digital X-ray imaging system for detection of weld test samples to determine the type of weld defects, and then according to the principle of electromagnetic induction carried out flow experiments to different weld defects tube bus test sample; Using infrared cameras to timing measuring the weld ambient temperatures, calculate the each test sample average temperature difference of the weld position and from the weld of 20cm, draw a curve of temperature difference and load time under different load. By comparing no defects experimental samples to obtain a variety of common tube bus weld defects influence law of weld heat generation. Fully demonstrated the feasibility of using infrared thermal imaging technology for tube bus weld field testing, provides an important reference to tube bus weld quality scene infrared detector.