All-position laser welding system and welding method

Abstract

The invention belongs to the technical field of laser welding, and particularly relates to an all-position laser welding system and welding method.The all-position laser welding system comprises a control system connected with a laser welding head, a tool platform for bearing a welding piece and a laser transmitter for providing energy for welding for the laser welding head; and the incident end is mounted on the rotating part of the rotating disc. The incident end is arranged on the rotating part of the rotating disc; the laser welding head can be driven by the rotating disc, when laser beams are emitted, the laser beams emitted by the laser welding head can rotate by + / -450 degrees around a rotating shaft of the rotating disc, and all-position butt welding of the thin-walled pipe with the diameter being 5-12 mm is achieved. The rotating disc is installed on the moving assembly capable of driving the laser welding head to do linear motion on the x axis, the y axis and the z axis of the three-dimensional coordinate system, so that the moving assembly adjusts the position of the laser welding head, and the rotating axis of the laser welding head and the axis of the pipeline to be welded can be located on the same straight line.

Description

technical field [0001] The invention belongs to the technical field of laser welding, and in particular relates to an all-position laser welding system and a welding method. Background technique [0002] With the development of my country's aerospace, nuclear power and pipeline industries, all-position welding technology has been more and more widely used. As a high-energy beam welding method, laser self-fluxing welding technology has gradually been widely promoted and industrially applied; for all-position butt welding of pipelines and tube sheets, compared with traditional manual electrode arc welding and gas metal shielded welding, etc. Due to its advantages of small welding heat input, fast welding speed and small weld deformation, laser welding can further optimize the welding process, which is conducive to further promoting the application of laser welding technology in all-position welding and realizing new processes and new technologies. Method change. [0003] Thr...

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Problems solved by technology

[0003] Through the search, it was found that the Chinese patent with the notification number CN109514086B proposed a continuous-pipe laser welding process in all positions, which optimized the butt welding welding process of continuous petroleum pipelines, but the welding process provided by it is only suitable for large-diameter and thick-walled pipes. Welding parts; and the high-temperature alloy pipes used to transport dyes or exhaust in aerospace and nuclear power are usually small in diameter and thin in pipe walls. It is difficult to weld pipes with small diameters and thin pipe walls using the above-mentioned laser welding process

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