电子束焊接是现代焊接领域中一项较新的技术,从1957年第一台可使用的电子束焊机出现开始,这十几年中已有了很大的发展,显示出一些突出的优点。电子束焊接是采用高能量密度的电子束打在工件上,将其动能转换为热能而使材料熔化实现焊接的。电子束焊接斑点尺寸小,对材料加热的面积小,电子束功率密度又高,可在被照射部分产生很高的温度,使包括钨、铝、钽、铌在内的各种金属熔化。也可用较小功率一次穿透焊接很厚的材料,得到很大的焊缝深宽比,一般可达10:1到20:1以上。焊接速度也 Electron beam welding is a relatively new technology in the field of modern welding, beginning with the first available electron beam welding machine in 1957 and has been greatly developed over the past decade, showing some outstanding advantages . Electron beam welding is the use of high energy density electron beam hit the workpiece, its kinetic energy is converted to heat and make the material melt to achieve welding. Electron beam welding spot size is small, the heating area of ​​the material is small, electron beam power density and high, in the irradiated part of the high temperature, including tungsten, aluminum, tantalum, niobium, including a variety of metals melting. It is also possible to pierce a very thick material with less power at once, resulting in a large aspect ratio of the weld, typically up to 10: 1 to 20: 1. Welding speed too