Technological parameters influence on the welded joint quality in electron beam welding of the aluminum alloy micro-seams

Welded joints made of the aluminum alloys are characterized by presence of the oxide film inclusions, lack of fusion, faulty fusion and irregular weld seam shape. The paper provides options of the technological methods to eliminate the removable defects by changing the equipment design. Scientific and technical literature mainly proposes methods for eliminating oxides in the welding seams made by the arc welding or for samples with the thickness of more than 1 mm. This defect is irreparable for the considered thin-walled joint with the thickness of less than 1 mm. To eliminate oxide inclusions in the welding seam, the paper proposes to carry out preparation and welding operations in one ultra-high-vacuum cluster machine.
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