Torch for tungsten inert gas welding and electrode to be used in such torch

摘要

Burner for tungsten inert gas welding comprises an electrically connected electrode (1) as a cathode, which is conically tapered in the direction of a workpiece. The electrode is hollow inside and held fixed in a burner body (2) and thus formed hollow space within the electrode in the direction of the workpiece has an opening and at least one additional opening. At least one recess (1.1) is formed at the outer and/or inner surface of the inner hollow electrode in a distance G to the tip of the electrode oriented in direction of the workpiece. Burner for tungsten inert gas welding comprises an electrically connected electrode (1) as a cathode, which is conically tapered in the direction of a workpiece. The electrode is hollow inside and held fixed in a burner body (2) and a so formed hollow space within the electrode in the direction of the workpiece has an opening and at least one additional opening. At least one recess (1.1) is formed at the outer and/or inner surface of the inner hollow electrode in a distance G to the tip of the electrode oriented in direction of the workpiece. The hollow space led through the electrode exhibits a region with different inner diameters so that a region is formed with reduced electrical conductivity, thermal conductivity and reduced wall thickness of the electrode. An independent claim is also included for the electrode for use in the burner for tungsten inert gas welding.