Vacuum electron beam welding method for TA2 titanium alloy plate with thickness of 40 mm

The invention relates to the technical field of titanium alloy plate vacuum electron beam welding, and discloses a vacuum electron beam welding method for a TA2 titanium alloy plate with the thickness of 40 mm. The vacuum electron beam welding method comprises the following steps that the titanium alloy plate is fixed through intermittent spot welding; executing the first conventional welding of the titanium alloy plate; performing second conventional welding of the titanium alloy plate after a preset time period; and surface modification welding of the titanium alloy plate is executed. According to the vacuum electron beam welding method for the TA2 titanium alloy plate with the thickness of 40 mm, operation is easy, welding parameters are easy to control, the requirements for precision, functions and the like of vacuum electron beam welding equipment are not high, only a traditional domestic vacuum electron beam welding machine needs to be used, the cost is low, and in addition, the vacuum electron beam wel