Arc paraxial welding device and method of laser consumable electrode additionally provided with high-frequency magnetic field

Abstract

The invention relates to an arc paraxial welding device of a laser consumable electrode additionally provided with a high-frequency magnetic field. The arc paraxial welding device comprises a welding machine, a welding gun, a welding wire, a laser coil, an exciting coil, an exciting power source, a combined welding head-welding gun clamping mechanism, a connection piece, a laser head and a combined welding head type connection piece. Compared with the prior art, the arc paraxial welding device provided by the invention has the beneficial effects that: the arc paraxial welding device has the characteristics of small size, low cost and strong practical applicability; the exiting coil acts on photo-induced plasma generated by laser, so that the screening effect of the photo-induced plasma on laser can be reduced, the use rate of electromagnetism and the own stable burning capacity of arc can be improved, molten drops are prompted to smoothly transit and metal in a furnace hearth is prompted to sufficiently flow, and the defects of generation of splashing and vents in welding beams and the like in a welding process can be reduced; the electromagnetic stirring effect of the exiting coil is beneficial to the flow of the metal in the furnace hearth and the thinning of a grain structure of the welding beams, so that the porosity and the cracking rate of the welding beams can be reduced, the structure property of a welding joint is improved, an arc paraxial welding process of the laser consumable electrode can be optimized, and wide market prospect is realized.

Description

technical field [0001] The invention relates to the technical field of material processing, in particular to a laser melting electrode arc paraxial hybrid welding device and method with an external high-frequency magnetic field. Background technique [0002] Research at home and abroad has shown that the organic compounding of two heat sources, laser and arc, and laser melting electrode arc compound welding can significantly improve welding efficiency and welding quality, and overcome the shortcomings of single heat source welding. However, in high-power laser arc compound welding During the welding process, there is still a certain amount of welding spatter that affects the welding surface morphology and the welding seam forming quality, especially when welding aluminum, copper and other laser high-reflection materials, there are still serious welding defects such as pores and humps. The generated photoplasma will have a shielding effect on the laser. At the same time, this...

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Problems solved by technology

[0002] Researches at home and abroad have shown that the organic compounding of two heat sources, laser and electric arc, and laser melting electrode arc compound welding can significantly improve welding efficiency and welding quality, and overcome the shortcomings of single heat source welding. However, in high-power laser arc compound welding During the welding process, there is still a certain amount of welding spatter that affects the welding surface morphology and the quality of the weld seam. Especially when welding high-reflective laser materials such as aluminum and copper, there are still relatively serious welding defects such as pores and humps. The generated photoplasma will have a shielding effect on the laser, and this shielding effect will affect the ability of the arc to burn stably and the smooth transition of the molten electrode welding droplet, affect the welding quality, continue to reduce the utilization rate of the laser, and affect the ability of the arc to burn stably At the same time, it will also have adverse effects on the molten electrode welding droplet transfer process and molten pool metal flow, resulting in defects such as welding spatter and pores, which will affect the quality of weld formation

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