Multiple welding method
AssigneeFronius International GmbH
InventorsDominik Söllinger, Andreas Waldhör
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Abstract
A a multiple welding method having an improved starting process in which the control unit of the guide electrode starts welding-wire advancing of the guide electrode and sends a synchronization signal to the control unit of the trailing electrode when the guide electrode has moved a certain distance or for a certain time. The control unit of the trailing electrode starts welding-wire advancing of the trailing electrode in dependence on the received synchronization signal before the guide electrode touches the workpiece.
Claims16
A method for carrying out a multiple welding process in which a welding process is carried out in each case with at least two welding wires as consumable electrodes on a workpiece, a first welding wire being provided as a guide electrode and the at least one other welding wire being provided as a trailing electrode, the welding processes of the guide electrode and the trailing electrode each being controlled by a control unit, wherein a starting process of the multiple welding method is carried out in that the control unit of the guide electrode starts welding-wire advancing of the guide electrode and sends a synchronization signal to the control unit of the trailing electrode when the guide electrode has moved a certain distance or for a certain time and in that the control unit of the trailing electrode starts welding-wire advancing of the trailing electrode in dependence on the received synchronization signal before the guide electrode touches the workpiece.
A welding arrangement for carrying out a multiple welding method on a workpiece having at least two welding devices for carrying out mutually independent welding processes, each welding device having a welding wire as a consumable electrode, a welding-wire advancing unit and a control unit for controlling the respective welding process, a welding wire being provided as a guide electrode and the at least one remaining welding wire being provided as a trailing electrode, wherein for performing a starting process of the multiple welding process, the control unit of the guide electrode is configured to control the welding-wire advancing unit of the welding device of the guide electrode in order to start welding-wire advancing of the guide electrode and to send a synchronization signal to the control unit of the trailing electrode when the guide electrode moves a specified distance or for a specified time and wherein the control unit of the trailing electrode is configured to control the welding-wire advancing unit of the welding device of the trailing electrode in order to start welding-wire advancing of the trailing electrode in dependence on the received synchronization signal before the guide electrode touches the workpiece.
Dependencies are inferred from the claim text.