Optimization method for electron beam welding process of large and thick titanium alloy plate

The invention discloses a titanium alloy large and thick plate electron beam welding process optimization method, which comprises the following steps of: 1, performing UT and RT detection on a welded large-thickness electron beam welding joint, and identifying the size and the position of a defect; 2, according to the specific distribution condition of the defects, sectioning all the welding seam area of the electron beam welding seam by adopting a dissection method, and implementing fine ray detection in the direction perpendicular to the new thickness direction; 3, performing RT inspection on the test piece subjected to anatomy again to present the distribution condition of internal defects in an anatomical area, and performing comparative analysis on the distribution condition and UT and RT results before anatomy; 4, according to comprehensive comparison of detection conditions before and after dissection, a single or combined electron beam welding process parameter test is carried out, the action rule of