Electron beam welding method for ZL114A/ZL270 dissimilar aluminum alloy material

The invention relates to an electron beam welding method for a ZL114A/ZL270 dissimilar aluminum alloy material, belongs to the technical field of electron beam welding, and solves one of the problems that obvious cracks easily exist in a welding seam, fusion is incomplete, and internal pores exceed the standard during existing electron beam welding of ZL114A/ZL270. The electron beam welding method comprises the following steps: performing positioned welding on assembled ZL114A and ZL270 alloy test plates; welding is conducted in the mode that double electron beams are arranged front and back and synchronously welded, one electron beam conducts weld joint preheating firstly, and then the other electron beam conducts formal weld joint welding; in the formal welding process, the center of an electron beam spot is welded towards one side of the ZL270 alloy plate from the butt seam of the test plate. 本发明涉及一种ZL114A/ZL270异种铝合金材料的电子束焊接方法，属于电子束焊接技术领域，解决现有电子束焊接ZL114A/ZL270时，焊缝内部容易存在明显裂纹、未熔合、内部气孔超标的问题之一。本发明的电子束焊接方法包括：将装