Laser-arc hybrid welding system

Abstract

The invention provides a laser-arc hybrid welding system. A welding device comprises a main body framework, wherein the main body framework is provided with a laser focusing device, a first adjusting mechanism, a welding gun, a second adjusting mechanism and a movement mechanism connecting assembly; the laser focusing device is connected to the first adjusting mechanism, and the first adjusting mechanism is connected to the main body framework; the movement mechanism connecting assembly is connected to the main body framework; the welding gun is connected to the second adjusting mechanism, and the second adjusting mechanism is connected to the main body framework; a laser light-emitting system is connected with the laser focusing device through an optical fiber; and the control system is connected with the laser light-emitting system, the laser focusing device, the first adjusting mechanism, the welding gun and the second adjusting mechanism. The system is favorable for reducing welding cracks and improving the mechanical property of welding seams, and is suitable for various welding processes with high requirements.

Description

technical field [0001] The present invention relates to the field of welding technology, in particular to a laser-arc hybrid welding system, especially a hybrid welding device that combines laser-arc heat sources. Background technique [0002] Laser-arc hybrid welding began in the late 1970s, but until recent years, due to the needs of industrial production, it has gradually become the focus of attention of the international welding community and has received extensive attention. At present, as a new welding technology, it has entered the stage of industrial application. [0003] The principle of laser-arc hybrid welding: the laser and the arc act on the same position on the metal surface at the same time, and the photoinduced plasma cloud is generated above the weld due to the action of the laser. The absorption and scattering of the incident laser by the plasma cloud will reduce the utilization rate of laser energy. Finally, the low-temperature and low-density arc plasma ...

AI Technical Summary

Problems solved by technology

[0005] The current laser-arc conformal welding has the following problems: 1. The hardware device is bulky and cannot effectively weld in a narrow space; 2. The hardware device adopts a fixed structure, and the positional relationship between the welding wire and the laser focal length cannot be flexibly adjusted, which affects the process. Larger; 3. The whole set of equipment is processed and manufactured as a whole. Once damaged, many parts need to be replaced, and the later maintenance costs are high, and it can only be used for special purposes, and cannot be disassembled and used alone;

However, this patent document still has the defects of producing more welding cracks and poor mechanical properties of the weld

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