The invention discloses a
laser hybrid welding technological method of a high-strength
magnesium alloy thick plate. The
laser hybrid welding technological method comprises the following steps: 1, designing a welded joint: a groove of the welded joint adopts the double Y-shaped groove type with truncated edges; 2, preparing
welding equipment: the welding equipment is composed of a
semiconductor laser with the laser beam rotary function and a
robot welding arm; 3, making preparation before welding; 4, carrying out truncated edge welding; and 5, groove welding. According to the
laser hybrid welding technological method, the technology is simple, and through the welding method of truncated edge laser
deep penetration welding and groove laser filler wire welding, the problem that the welding defects including a concave pit, an
undercut and the like are likely to be formed on the surface of a welding seam is perfectly solved, the matching precision requirement of laser welding to the technological parameters including welding
powder, welding speed, wire feed rate and wire feed angle and the like is lowered, the technological problem about
fusion welding of a deformed high-strength
magnesium alloy thick plate (20mm-50mm) is solved, excellent welding of the high-strength
magnesium alloy thick plate is realized, the welding seam forming is level, smooth and artistic, the
mechanical property of the welded joint meets the indicator requirement, the quality and property of the welded joint are greatly improved, and the
laser hybrid welding technological method is suitable for weldingengineering structural components with various sizes.