Narrow gap laser-arc hybrid welding method using filler wire
A technology of filler wire and composite welding, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of the joint quality is difficult to meet the requirements of use, the stability of the welding process is difficult to guarantee, and the arc stability is affected. Assembly requirements, low welding costs, and the effect of increasing bridging capacity
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[0019] The present invention will be further described below in conjunction with accompanying drawing:
[0020] For the technical solution of this embodiment, refer to the appended figure 1 , Before welding, the workpiece is pre-grooved 2. During welding, the laser beam 4 and the welding wire 9 are longitudinally arranged symmetrically with respect to the TIG arc 8 , and the arc 8 is perpendicular to the surface of the workpiece 1 . The angle between the laser beam 4 and the surface of the workpiece 1 is 45°, and it is obliquely incident from the front of the arc 8 . The welding wire 9 is fed into the groove gap 2 from the rear of the arc 8, and the composite heat source composed of the laser beam 4 and the electric arc 8 melts the welding wire and fills the groove 2 to realize the single-pass welding of the workpiece 1.
[0021] In this embodiment, the workpiece is a stainless steel plate with a thickness of 10 mm, the shape of the groove 2 is a U-shaped groove with a blunt...
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