漂移管是高能加速器腔体中的重要部件,对这种要求精密装配的焊接部件,采用电子束焊接具有很大的意义。本文对漂移管的结构及焊接技术条件、铜-铜外环缝的焊接、铜-蒙乃尔内环缝的焊接以及焊接生产问题作了详细的论述。采用电子束焊接的57支漂移管中,废品率仅占1.7％,达到了国外同类产品的水平。 Drift tubes are an important part of high-energy accelerator cavities and are of great importance to the use of electron beam welding for such precision-fitted soldered parts. In this paper, the structure of the drift tube and welding technology, copper-copper outer ring seam welding, copper-Monel inner seam welding and welding production problems were discussed in detail. Among the 57 drift tubes using electron beam welding, the reject rate is only 1.7%, reaching the level of similar foreign products.