The hybrid welding method combines the advantages of laser and GMA welding. The laser beam ensures deep fusion in low line energy conditions, whereas use of the electrode wire in the GMA method ensures filling of the welding groove.
The hybrid welding process allows for significant reduction of the number of runs needed per weld in comparison to traditional methods. Additionally, due to low line energy, deformations and welding stress are eliminated.
In comparison to the laser welding method, the main advantage is decrease of sensitivity to element matching which entails significant reduction of costs incurred in relation to preparation of welding materials. Use of the electrode wire in the GMA method allows to control the metallurgical properties of the joint by means of the binder, perform fillet welds and weld overlays. Lower cooling rate in comparison to laser welding results in decrease of weld hardness. Welds made using the hybrid welding method are characterised with high quality. The illustration above shows a cross section of welds made using the particular methods.