Electron beam welding method for back-type welding seam of box structure

Abstract

The invention relates to an electron beam welding method for a box structure back-type welding seam. Using a fixed gun type electron gun, it is characterized in that the welding method includes: dividing 4 straight sections and 4 rounded corner sections based on the back-type welding seam of the box structure, wherein every two straight sections are separated by a circle Corner section, the welding starting point of the return type weld starts from the straight section or the rounded section, when the straight section is welded, the box structure is moved at a constant speed, and when the rounded section is welded, the box is The structure performs variable-speed translation and uniform-speed rotation at the same time, so as to control its actual welding speed, so that the welding speed of the rounded section is equivalent to that of the straight section, and the overall weld seam of the box structure is welded at a uniform speed.

Description

technical field [0001] The invention relates to the technical field of electron beam processing, in particular to an electron beam welding method for reshaped welding seams of a box structure. Background technique [0002] Electron beam welding equipment can generally be divided into fixed gun type and moving gun type. Fixed gun type electron beam welding equipment can only realize workpiece welding through translational or rotational movement of the worktable, so it can weld flat welds of any shape, or circular In addition, combined with dynamic adjustment of focus current and variable cross-section welding technology, the welding of space curve welds can also be realized; while the electron gun of the gun-type equipment can carry out a certain degree of translational movement to match the movement of the workbench , can also realize the welding of the above-mentioned form of welding seam, and can solve the problem that the electron gun cannot reach the welding seam positio...

AI Technical Summary

Problems solved by technology

As for the back-type weld of the box structure, during the welding process, the movement law of the parts is complicated, resulting in the constant change of the distance between the weld seam and the electron gun, and the electron beam welding parameters need to be determined according to the movement law of the parts, so It makes the adjustment of welding parameters extremely complicated, and it is impossible to achieve uniform and unified weld quality and performance.

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