Fronius International Gmbh

Joerg Kazmaier

Josef Artelsmair

Walter Stieglbauer

Gernot Trauner

Andreas Schauer

Marco Haselsteiner

Willi Baumann

A method for controlling a welder including a fusible electrode stores the values of the welding parameters required for a welding process in a storage device and saves the values as so-called characteristic curves through at least one support point per characteristic curve. A working point is set by a value for the heat input into a workpiece and a value for the wire feed speed. Upon adjustment of any of the values to a welding application the other value is kept constant by a calculation method designed such that a plurality of characteristic curves that are compatible with one another are combined to form a characteristic curve field per welding process and the welding parameters of all support points of the characteristic curves of the characteristic curve field are saved according to defined values of specific welding parameters.

Method for controlling a welder

The invention relates to a method for changing a welding process during a welding operation, wherein the change is carried out from a welding process that was conducted to a subsequent welding process during a short circuit between a melting welding wire and a workpiece, and to a method for applying heat prior to a welding operation. In order to achieve a welding process with high process stability, it is provided that, upon detecting the short circuit of the welding process that is conducted, the welding wire () is still moved for a defined duration () in the movement direction and subsequently stopped, depending on a threshold value () of the welding current (I) of the subsequent welding process, whereupon upon reaching the threshold value () of the welding current (I), the welding wire () is moved in the opposite direction in order to start the subsequent welding process.

Method for changing a welding process during a welding operation and method for applying heat prior to a welding operation

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Thalheim bei Wels, Austria

Joerg Kazmaier