局部真空电子束焊接技术研究进展

Recent Development of Localized Vacuum Electron Beam Welding Technology

真空电子束焊接在大型、大厚度结构的焊接连接上具有难以替代的作用,但受真空室尺寸的限制,其难以满足超大型结构的焊接需求,因此国内外开始进行局部真空电子束焊接技术的研究,仅通过较小的真空室局部覆盖焊接部位以完成超大型结构的电子束焊接。本文总结了近期国内外局部真空电子束焊接技术的发展概况和研究进展,介绍了不同形式、不同类型的局部真空电子束焊接设备,并对局部真空电子束焊接工艺、移动密封及焊缝跟踪等技术难题进行了探讨。

The vacuum eletron beam welding plays an irreplaceable role in welding connections of large and thick structures.However,the size of the vacuum chamber remains a limitation for vacuum electron beam welding technology,making it a challenge to meet the welding requirements of extremely large structures.Therefore,both domestic and international researchers started working on localized vacuum electron beam welding technology,by using a smaller vacuum chamber to cover the welding structures locally to complete the ultra-large structure of the electron beam welding.This paper provides an overview of the latest advancements in localized vacuum electron beam welding technology around the world.Various forms and types of local vacuum electron beam welding equipment are introduced,and sealing structure,weld tracking,and other technical topics are discussed.