The hybrid welding process combines the advantages of laser welding and gas shielded arc welding. The laser beam creates a deep weld seam at a low heat input, while the welding wire fills the weld joint in gas shielded arc welding.
By using the hybrid welding process, the number of seams required for a joint can be reduced many times in comparison with conventional processes. In addition, distortion and welding stresses are avoided thanks to the low linear energy.
The main advantage over the laser welding process is the lower sensitivity in matching the elements, which leads to a significant reduction of costs for the preparation of materials to be welded. The use of electrode wire in the gas-shielded welding process makes it possible to influence the metallurgical properties of the joint by using a filler metal, perform fillet welds and weld beads.
The lower cooling rate compared to laser welding results in lower hardness of the welds. Welds produced with the hybrid welding process are of high quality; the illustration above shows a cross-section of welds produced with the respective processes.
Hybrid welding is mainly used for butt welding of metalsheets with thickness from 2 to 16 mm (for larger thicknesses in several passes), welding of pipes and fillet welds (in several passes) for a wide range of materials:
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