Method and device for one-sided welding of weld seams with a double welding nozzle

摘要

The method for one-sided welding of aluminum-welding seam in transverse position, comprises burning an arc in a protection current from an inert gas between the melting electrode and the workpiece. Two different welding seams are arranged in welding direction. The running welding seam forms the root of the lateral welding seam, covers the root during the welding seam, connects itself with the root-side welding seam and produces an intermediate layer or the final welding seam, where both burner nozzles (12) operate under a common shielding gas nozzle. The method for one-sided welding of aluminum-welding seam in transverse position, comprises burning an arc in a protection current from an inert gas between the melting electrode and the workpiece. Two different welding seams are arranged in welding direction. The running welding seam forms the root of the lateral welding seam, covers the root during the welding seam, connects itself with the root-side welding seam and produces an intermediate layer or the final welding seam, where both burner nozzles (12) operate under a common shielding gas nozzle. The pressure of the shielding gas (11) is selected so that the gas pressure of the bath is higher than in the shielding gas nozzle. The aluminum welding seam comes at the place of the double-welding seam to a mixture of both materials of the welding seam. An independent claim is included for a device for one-sided welding of aluminum-welding seam.