介绍了DR(数字射线)检测技术在埋弧焊管焊缝检测的机理, 进行了埋弧焊缝检测灵敏度、空间分辨率、焊接缺陷检出效果试验。结果表明: 该项技术能够达到埋弧焊缝射线检测标准的要求, 焊接缺陷图像显示清晰、噪声低、灵敏度高, 是埋弧焊钢管焊缝缺陷快速、高效、可行的射线检测新技术。

This article introduces the working principle of DR inspection technology in submerged arc welded pipe radiographic testing. In this article, the sensitivity of submerged arc welding defect detection, spatial resolution and defect inspection rate and accuracy are tested. The result shows that this technology can meet the requirements of submerged arc welding seam radiographic testing standards. The defect image of DR is clear, with low noise and high sensitivity. The DR inspection technology is a fast, efficient and feasible method for submerged arc welded steel pipe weld radiographic testing.