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Electrode for a welding torch for tungsten gas-shielded welding and welding torch having such an electrode

A technology of gas shielded welding and tungsten inert gas, which is applied in the fields of ion welding torch, electrode of ion welding torch, high current welding, and electrode of tungsten gas shielded welding torch, which can solve anode damage, High current density, increased self-amplification effect, etc., to avoid electrode damage and increase capacity

Active Publication Date: 2017-08-01
LINDE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The reason for this is that providing good cooling of the electrode acting as the anode can lead to point application of an arc on the anode, which can generate very high current densities, leading to destruction of the anode
Once this type of point of arc application is reached, the anode material evaporates, causing the self-amplification effect to increase

Method used

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  • Electrode for a welding torch for tungsten gas-shielded welding and welding torch having such an electrode
  • Electrode for a welding torch for tungsten gas-shielded welding and welding torch having such an electrode
  • Electrode for a welding torch for tungsten gas-shielded welding and welding torch having such an electrode

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Embodiment Construction

[0066] figure 1 A preferred embodiment of a welding torch referenced 100 for gas tungsten arc welding according to the invention is schematically depicted. In this example, the welding torch 100 is designed as a welding torch for gas tungsten arc welding. The welding torch 100 is used to weld the first workpiece 151 and the second workpiece 152 in a joining process.

[0067] The welding torch 100 has an electrode 200 according to a preferred embodiment of the invention. The workpieces 151 , 152 and the electrode 200 are electrically connected to the welding power source 140 . Therefore, the electrode 200 is supplied with welding current. Electrode 200 is used here as an anode, and workpieces 151 and 152 are used as cathodes. The arc 120 burns between the electrode 200 and the workpieces 151 , 152 . The arc 120 at least partially melts the first and second workpieces 151 , 152 to create a weld puddle 160 .

[0068] The welding torch 100 performs high current welding, and ...

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Abstract

The present invention relates to an electrode (200) for a welding torch (100) for tungsten gas-shielded welding, in particular for tungsten inert gas welding or for plasma welding, wherein the electrode (200) comprises at least one insert (210) composed of a material (211) different from the electrode material (201), wherein the insert (210) at least partially forms an arc-side surface (202) of the electrode, the electrode (200) has, on the arc-side surface thereof, a plurality of focusing-gas bores (220) for supplying a focusing gas (222) for focusing an arc (120), and the electrode (200) has at least one axially extending gas removal bore (230) for removing a gas (132) from the arc-side surface (202) of the electrode (200) through the axially extending gas removal bore (230).

Description

[0001] The invention relates to an electrode for a gas tungsten shielded welding torch, in particular, an electrode for a tungsten inert gas shielded welding or a plasma welding torch, and to a corresponding welding torch. Background technique [0002] Gas tungsten arc welding, especially tungsten inert gas arc welding (WIG welding) and plasma welding are methods involving arc welding, which can be used, for example, for overlay welding, welding or brazing of one, two or multiple artifacts. Here the workpiece and the tungsten electrode of the corresponding welding torch for gas tungsten arc welding are electrically connected to the welding power source. The arc burns between the tungsten electrode and the workpiece. Here the workpiece is at least partially melted and forms a weld puddle. In most materials, the tungsten electrode acts as the cathode and the workpiece acts as the anode, where electrons are transferred from the tungsten electrode to the workpiece based on the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/167B23K9/24H05H1/34
CPCB23K9/164B23K9/167B23K9/24H05H1/3405H05H1/34B23K35/0205H05H1/28
Inventor E·西韦特
Owner LINDE AG
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