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Welding of materials for the production of energy devices with laser and laser-MIG hybrid technology, hybrid welding
Mrňa, Libor ; Šebestová, Hana ; Novotný, Jan ; Beran, D.
Laser welding technology is known more from the automotive field, where it is used for fast and high-quality welding of thin body sheets. The production of power equipment is specific both in the materials used (mainly martensitic stainless steels) and in the significantly larger thicknesses of the welds. Research into the weldability of these materials using laser welding technology and laser-MIG hybrid technology is being conducted at the ÚPT. The article describes experiences with the general weldability of these materials with laser and hybrid laser-MIG, as well as practical applications of welding parts of steam turbines. Finally, the possibility of welding stellites using hybrid laser-MIG technology is also discussed.

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