Method for controlling a welding process
AssigneeFronius International GmbH
InventorsDominik Söllinger, Manuel Mayer, Andreas Waldhör, Angelika Kogler
Life of this patent
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Abstract
In order to develop a welding process in such a way that uniform flaking of a weld seam can be guaranteed even with a higher number of short-circuit cycles, a specific number of short-circuit cycles is specified for the cold welding phase and the cold phase duration of the cold welding phase is determined for a number of short-circuit cycles that exceeds a specified limit cycle number, depending on a determined cold phase time and after the cold welding phase, there is a switch to the hot welding phase.
Claims19
A method for controlling a welding process with a consumable electrode, said method comprising:
- using at least two different sequential welding phases after ignition of an are between the electrode and a base material, said phases comprising a cold welding phase used during a cold phase duration and a hot welding phase used during a subsequent hot phase duration;
- carrying out, in the cold welding phase, at least one short-circuit cycle with a short-circuit cycle time, and wherein a change is made to the hot welding phase after the cold welding phase;
- wherein a specific limit cycle number of short-circuit cycles is predetermined for the cold welding phase;
- wherein the cold phase duration of the cold welding phase is determined for a number of short-circuit cycles that exceeds the predetermined specific limit cycle number, depending on a determined cold phase time;
- wherein, to determine the cold phase duration, a short-circuit cycle, already started at the time of the end of the cold phase time, is completed, before changing to the hot welding phase.
A welding device for carrying out a welding process comprising:
- at least one control for controlling the welding process;
- a welding torch and at least one feeder for feeding a consumable electrode to the welding torch;
- the control being configured at least to carry out a cold welding phase during a cold phase duration and to carry out a hot welding phase during a subsequent hot phase duration, at least one short-circuit cycle having a short-circuit cycle time being provided in the cold welding phase;
- wherein the control controls the cold phase duration of the cold welding phase;
- wherein a specific limit cycle number of short-circuit cycles is predetermined for the cold welding phase;
- wherein the cold phase duration of the cold welding phase is determined for a number to complete short-circuit cycles that exceeds a predetermined specific limit cycle number, depending on a determined cold phase time;
- wherein, after the cold welding phase, the control causes a change to the hot welding phase, the control being configured for completing a short-circuit cycle that has already started at the time of the end of the cold phase time before the change to the hot welding phase in order to determine the cold phase duration.
Dependencies are inferred from the claim text.