Laser electrical arc complex welding method for intensifying current magnetohydrodynamics effect

A magnetic hydrodynamic and laser arc technology, applied in laser welding equipment, arc welding equipment, welding equipment and other directions, can solve the problems of narrow welding seam and poor gap adaptability, and achieve the improvement of welding seam surface forming, improving surface forming, The effect of improving stability
CN100532000CInactive Publication Date: 2009-08-26BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2009-08-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a laser-arc compound welding method for strengthening current magnetohydrodynamic effect, which belongs to the technical field of laser material processing. The present invention adopts laser-arc coordinated arrangement, and adds filler welding wire at the same time, wherein the arc and welding wire are respectively arranged on both sides of the laser beam, the welding wire is located in front of the laser beam and contacts the workpiece, and the arc is arranged behind the laser beam. When welding, the two poles of the welding power supply are respectively connected to the tungsten pole and the welding wire. The welding current passes through the molten pool and the arc from the welding wire to form a current loop. Most of the welding current flows through the molten pool, generating electromagnetic force in the molten pool and making full use of the magnetic fluid of the arc current The influence of kinetic effects on the molten pool flow state and heat exchange conditions enhances the energy coupling efficiency and improves the stability of the welding process. At the same time, because the arc is located behind the molten pool, the tolerance to the fluctuation of the welding wire is greatly improved, and the surface shape of the weld is significantly improved.
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Description

technical field

[0001] The invention relates to a laser arc hybrid welding method which strengthens the current magnetohydrodynamic effect, and belongs to the technical field of laser material processing. Background technique

[0002] Laser welding has outstanding advantages such as high energy density, fast welding speed, small heat input, small welding deformation, and excellent joint performance. It is considered to be the most advanced material joining technology. However, due to the poor bridging performance of pure laser welding, the requirements for workpiece groove preparation and assembly accuracy are extremely high, which largely restricts the industrial application of laser welding technology. At the end of the 1970s, British scholars proposed the concept of laser and TIG (non-melting inert gas shielded welding) arc hybrid heat source welding. At present, laser-arc hybrid welding has become one of the frontiers of laser welding technology research.

[0003] Laser...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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