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Method for tungsten shielded welding

A technology of tungsten shielded welding and shielded welding, which is applied in the field of ion welding, can solve the problems of self-amplification effect increase, anode material evaporation, high current density, etc., and achieve the effects of preventing pollution or defects, increasing capacity, and increasing current carrying capacity

Active Publication Date: 2017-08-18
LINDE AG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] 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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  • Method for tungsten shielded welding
  • Method for tungsten shielded welding

Examples

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Embodiment Construction

[0066] figure 1 A welding torch designated 100 for shielded tungsten welding is schematically depicted, said welding torch being arranged for carrying out a preferred embodiment of the method according to the invention. 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 . 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 is generated between the electrode 200 and the workpieces 151 , 152 and 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 w...

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Abstract

The invention relates to a method for tungsten shielded welding, in particular tungsten inert-gas shielded welding, or for plasma welding, in which method an electrode (200) and a workpiece (151) are supplied with a welding current, the electrode (200) being supplied as the anode and the workpiece (151) as the cathode. An electric arc (120) is initiated and burns between an electric-arc-side face (202) of the electrode (200) and the workpiece (151) and the energy density of the electric-arc-side face (202) of the electrode (200) and / or the build up of the electric arc (120) on the electric-arc-side face (202) of the electrode (200) are deliberately influenced.

Description

[0001] The present invention relates to methods of shielded tungsten welding, in particular, tungsten inert gas welding or plasma welding, wherein a welding current is supplied to an electrode and a workpiece, wherein the electrode acts as the anode and the workpiece acts as the cathode, wherein the arc is on the arc side of the electrode It is produced and burned between the surface of the workpiece and the workpiece. Background technique [0002] Tungsten shielded welding, especially tungsten inert gas welding (WIG welding) and plasma welding are methods of arc welding that can be used, for example, to build up, weld or braze one, two or Multiple artifacts. Here the workpiece and the tungsten electrode of the corresponding welding torch for shielded tungsten 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 material...

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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