DEVICE HAVING TWO WELDING TORCHES AND CONTROL UNIT FOR STARTING THE ARC IGNITION PROCESS ; METHOD FOR WELDING WITH TWO WELDING PROCESSES UNDER AN ADAPTED STARTING PROCESS

摘要

The welding device (29) has a central unit (35) and a welding torch unit (30), which is connected to the central unit (35). The central unit (35) comprises at least one welding current source (36, 37) for providing electric current needed for the operation of the welding torch unit (30) and comprises a control unit (5). The welding torch unit (30) comprises at least one first welding torch (31) having a first welding wire (43) and one second welding torch (32) having a second welding wire (44). The first welding torch (31) is designed to carry out a first welding process and the second welding torch (32) is designed to carry out a second welding process, wherein both welding torches (31, 32) can be operated independently of each other. The control unit (5) is designed to carry out a starting process in such a way that first a first arc ignition process occurs at one of the two welding torches (31) and, after a waiting time (59) since the first arc ignition process has passed, a second arc ignition process occurs at the other of the two welding torches (32), which until then was not ignited. The control unit (5) is also designed, before or during the first arc ignition process occurring at the one of the two welding torches (31), to transfer the welding wire (44) of the other of the two welding torches (32) to a waiting position by means of the welding wire end (50) of said welding wire.