Abstract: A method for electron-beam welding of nickel-based superalloys includes joining two components of a component to be produced of nickel-based superalloys by electron radiation in which the electron radiation is guided with a feed rate of 12 mm/min to 120 mm/min, in particular of 40 mm/min to 80 mm/min, over a joining zone of the two components. A device for the electron-beam welding of two components to form a component of nickel-based alloys, which has at least a vacuum chamber, in which an electron radiation or laser radiation is generated and is directed onto a joining zone of two components to be joined.

Abstract: The invention relates to a method for connecting the ends of steel tubes by means of orbital welding using a hybrid laser arc technique, with the tubes preferably having wall thicknesses ?6 mm and more particularly ?12 mm and diameters of preferably ?150 mm, the ends of which tubes are connected by one or more welding passes, wherein the laser and arc welding heads as tools are guided over a guide ring fixedly arranged around a tube end in the region of the weld site during the welding and are displaced around the tube diameter. The invention also relates to a device for carrying out the method, wherein the laser and the arc welding heads are positioned separately on the guide ring and are moved over the tube circumference and controlled independently of one another during the welding process.

Abstract: The invention relates to a method for connecting the ends of steel tubes by means of orbital welding using a hybrid laser arc technique, with the tubes preferably having wall thicknesses ?6 mm and more particularly ?12 mm and diameters of preferably ?150 mm, the ends of which tubes are connected by one or more welding passes, wherein the laser and arc welding heads as tools are guided over a guide ring fixedly arranged around a tube end in the region of the weld site during the welding and are displaced around the tube diameter. The invention also relates to a device for carrying out the method, wherein the laser and the arc welding heads are positioned separately on the guide ring and are moved over the tube circumference and controlled independently of one another during the welding process.