加氢反应器是煤焦油加氢装置的核心设备,本文针对加氢反应器在制造过程中焊缝的纵缝出现的氢致延迟裂纹的焊接缺陷问题,从母材成分、焊接工艺及热处理方面分析了焊接缺陷产生的原因,最后给出了作者的处理措施及几点建议。 Hydrogenation reactor is the core equipment of coal tar hydrogenation unit. In this paper, the hydrogen-induced delayed crack in the longitudinal seam of the weld in the process of hydrogenation reactor is discussed from the aspects of base metal composition, welding process and heat treatment The causes of welding defects are analyzed. Finally, the author’s handling measures and some suggestions are given.