前言电子束焊接是目前焊接领域中的一项重要新技术.它是利用被聚成细束的高能电子对工件冲击使材料熔化而进行焊接的.电子束焊接具有一系列特点:电子束集中在一个很小的面积上,材料被加热面积小,电子束功率密度高,能得到深的熔深,窄的熔区,使焊缝深宽比大.热量输入小,热影响区就小,大大减少了材料的变形,能实现精密焊接,因此可采用焊接结构来代替其它工艺结构,使毛坯精化,不仅大量节省原材料,而 Foreword Electron beam welding is an important new technology in the field of welding at present, which uses the high-energy electrons which are gathered into thin bundles to weld the material by melting the material by the impact of the workpiece.The electron beam welding has a series of features: A small area, the material is heated area is small, the electron beam power density, can get deep penetration, narrow melting area, the weld depth to width ratio. Heat input is small, heat affected zone is small, big Reduce the deformation of the material, to achieve precision welding, welding structure can be used instead of other structures to refine the rough, not only save a lot of raw materials, and