Laser-Arc Híbrido Solda

As a novo soldagem tecnologia, laser-arc hybrid welding uses laser and arc as dual heat sources, which act on the same molten pool at the same time to form a laser-guided and stable arc. The arc improves the laser absorption rate of the metal and enhances the transfer and bridging of molten droplets. A capaz soldagem método que dá full play to the advantages of laser welding and arc welding and makes up para sua respectiva deficiências. Especialmente em a soldadura de média e grande espessura materiais, híbrido soldadura tecnologia tem maiores vantagens. Porque tradicional soldagem métodos têm deficiências tais como baixa junta resistência, baixa eficiência, grave deformação, e grande consumo de soldadura materiais; e simples laser soldadura também tem alguma deficiências, tal como alta junta montagem processo requisitos e soldagem capacidades restritas por laser potência. Grande, pobre ponte habilidade, sério undercutting de soldas, etc.

As a novo soldagem método, laser-arc híbrido soldagem tem o seguinte três significativo características:
1) Melhorar energia utilização, aumentar solda penetração profundidade e soldagem velocidade;
2) Reduce workpiece assembly requirements;
3) Melhorar solda qualidade e melhorar solda formação.

Há são muitas formas de laser-arc híbrido soldagem, incluindo Laser-MAG/MIG hybrid welding, Laser-TIG hybrid welding, laser-plasma arc hybrid welding, etc. Among them, the commonly used laser light sources at this stage are fiber lasers and semiconductor lasers. For example, Raycus continuous fiber laser 4000W, 6000W and fiber output semiconductor laser 4000W.

Laser-MAG hybrid welding has two welding heat sources, namely laser and MAG arc. Quando usado as a único calor fonte para soldadura, an eficaz molten pool can be formed, but the characteristics of the molten pool are different: the characteristics of the laser welding molten pool are "deep and narrow" ", the opening area is small and the depth is large, which is not conducive to the formation of the weld; the MAG arc welding molten pool is characterized by being % 22raso e largo", a abertura área é grande e a profundidade é pequena, que é propícia a a formação de a solda e tem forte ponte habilidade.

During the Laser-MAG composite welding process, two heat sources act on the base material at the same time. There is mutual influence between the two heat sources, and there is also mutual influence between the two molten pools, which will eventually form a new composite molten pool. This composite molten pool has both the "large depth" of the laser molten pool and the "large area" of the arc molten pool. This composite molten pool has a large depth, good weld formation, and strong bridging ability. At the same time, because of the MAG arc welding There is welding wire filling, and the type of welding wire can be selected, so according to the performance defects of the base material itself, the appropriate welding wire can be selected and added to the welding process, thereby improving the crack resistance, fatigue resistance, and corrosion resistance of the weld at the micro level. , wear resistance and other aspects to carry out purposeful improvements. In addition, during the entire welding process, there are two heat sources acting on the base material. The mutual influence between them can increase the penetration depth and achieve the effect of "1+1>2". Portanto, o único fusão ponto de laser-arc híbrido soldadura é A penetração capacidade será significativamente melhorada. Finalmente, laser-arc hybrid welding can achieve multi-pass stacked welding and welding of large thickness materials, and the fusion ability of the upper and lower weld beads and side walls is very strong due to the arc.