Laser-single power double-wire pulse arc hybrid welding system and use method for same

Abstract

The invention discloses a laser-single power double-wire pulse arc hybrid welding system and a use method for the laser-single power double-wire pulse arc hybrid welding system. The laser-single power double-wire pulse arc hybrid welding system comprises a first welding gun, a second welding gun, an electric welding machine and a laser device, wherein the laser device is used for generating laser beams, the electric welding machine is used for outputting signals to the first welding gun and the second welding gun, the first welding gun and the second welding gun are connected with the anode of the electric welding machine, and the cathode of the electric welding machine is connected with a work piece. According to the hybrid welding system provided by the invention, the laser is combined with the double-wire MIG (Metal-Inert Gas) welding, and the advantages of the laser and the double-wire MIG welding are integrated and the disadvantages thereof are overcome, so that the welding melting efficiency is improved, the depth of fusion is increased, the welding speed is improved, and steady welding is obtain excellent welding quality.

Description

technical field [0001] The present invention relates to a welding system, more particularly, to a laser-single power source double-wire pulsed arc composite welding system and a method of using the same. Background technique [0002] Laser welding is to radiate a high-intensity laser beam to the metal surface. Through the interaction between the laser and the metal, the metal absorbs the laser and converts it into heat energy. The metal is melted and then cooled and crystallized to form a weld. Laser welding is widely used in the welding of various structural parts due to its advantages of high energy density, fast welding speed, small deformation, large penetration and easy automation. [0003] In the 1970s, W.M.steen of Imperial University in the United Kingdom used arc welding assisted laser welding for the first time, and proposed the concept of laser-arc hybrid welding technology. Since laser arc hybrid welding technology avoids the shortcomings of separate laser weldi...

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Problems solved by technology

[0005] Although laser-arc hybrid welding and twin-wire welding have many advantages, they also have their own limitations: the most commonly used form of twin-wire welding is tandem twin-wire welding, but this method improves the welding melting point. Deposition rate and welding speed, but did not play a role in increasing the depth of penetration. At the same time, the strong interference between the two arcs in twin-wire welding, that is, the electromagnetic force and plasma flow force of the arc itself makes the droplet transfer unstable. The electromagnetic force between the two arcs will affect the shape of the two arcs and the process of droplet transfer; in laser arc hybrid welding, the welding speed of the two does not match, and how to control the force between the two arcs , which will seriously affect the quality of laser arc composite heat source welding

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