PROCESS OF BUILD-UP WELDING OF POWDER OR WIRE MATERIAL ON A WORKPIECE

A method of build-up welding a powdery or wire-shaped material onto a workpiece, which is preferably a flat substrate, by means of a device which comprises a substantially rod-shaped electrode, the electrode having at least one material feed channel extending in its interior, the device comprising a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LAIMER, Johann, HAYDEN, Paul
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A method of build-up welding a powdery or wire-shaped material onto a workpiece, which is preferably a flat substrate, by means of a device which comprises a substantially rod-shaped electrode, the electrode having at least one material feed channel extending in its interior, the device comprising a nozzle surrounding the electrode, the method comprising the following steps:forming the arc as a transferred arc between the electrode and the workpiece or as a free-standing arc between the electrode and the nozzle,flooding the working gas area with a working gas to constrict the arc in the direction of the workpiece,feeding the powdery or wire-shaped material into the constricted arc andmoving the device across the workpiece as the powdery or wire-shaped material is being fed into the constricted arc.