WELDING TORCH, WELDING APPARATUS AND METHOD OF WELDING USING HOLLOW ELECTRODE AND FILLER MATERIAL

摘要

A welding torch having guidance means designed to advance a wire-like welding filler material mechanically along an axis at least in a section of the welding torch, a process gas nozzle that coaxially surrounds at least the guidance means, and a welding current connector that is connected in electrically conductive manner to an element of the welding torch that is configured to conduct electrical current. A hollow electrode is provided that surrounds the axis coaxially and as the element configured for conducting current is connected in electrically conductive manner to the welding current connector, wherein the guidance means are designed to advance the wire-like welding filler material in potential free manner. The welding torch may be used as part of a welding apparatus for a variety of welding methods.

主权项

1. A welding torch comprising guidance means designed to advance a wire-like welding filler material mechanically along an axis at least in a section of the welding torch having at least one process gas nozzle that coaxially surrounds at least the guidance means and having a welding current connector that is connected in electrically conductive manner to an element of the welding torch that is configured to conduct electrical current, characterised by a hollow electrode that surrounds the axis coaxially and as the element configured for conducting current is connected in electrically conductive manner to the welding current connector, wherein the guidance means are designed to advance the welding filler material in potential free manner with no connection to the welding current connector.