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In view of the demands made by the end users in the field of application of vehicle construction for an ever-higher product quality and improved performance,continuous innovations are considered to be absolutely decisive for being successful.This especially applies to the welding technology,and therefore the goal is to develop new,better and more powerful welding processes.In joining technology the high welding speed on the one and the good gap bridging ability on the other hand play a significant part.However,both features cannot be achieved by conventional laser welding processes.Therefore,a hybrid process is being applied,the Laser-GMA Hybrid or Laser-GMA-Tandem Hybrid welding.It is no doubt that the laser beam welding and the GMA welding have been established in the welding technology for very long,and that both processes allow a wide field of application in the joining technology.New possibilities and synergetic effects,however,are based on the combination of both processes.The laser radiation causes a very narrow thermally affected zone with a high ratio between welding depth and seam width.