Welding arc initiator

Title: Welding arc initiator

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Abstract

An improved inert gas shielded tungsten arc welder is disclosed of the type wherein a tungsten electrode is shielded within a flowing inert gas, and, an arc, following ignition, burns between the energized tungsten electrode and a workpiece. The improvement comprises in combination with the tungsten electrode, a starting laser focused upon the tungsten electrode which to ignite the electrode heats a spot on the energized electrode sufficient for formation of a thermionic arc. Interference problems associated with high frequency starters are thus overcome. 3 figs.

Inventors:: Correy, T B

Issue Date:: 1989-05-09

OSTI Identifier:: 7073303

Patent Number(s):: 4829153

Application Number:: PPN: US 7-068698

Assignee:: Battelle Memorial Inst., Columbus, OH (United States)

DOE Contract Number:: AC06-76RL01830

Resource Type:: Patent

Resource Relation:: Patent File Date: 30 Jun 1987

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; GAS TUNGSTEN-ARC WELDING; WELDING MACHINES; DESIGN; ELECTRODES; LASER RADIATION; OPERATION; ARC WELDING; ELECTROMAGNETIC RADIATION; FABRICATION; GAS METAL-ARC WELDING; JOINING; RADIATIONS; WELDING; 360101* - Metals & Alloys- Preparation & Fabrication

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                    Correy, T B. Welding arc initiator.  United States: N. p., 1989. 
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                    Correy, T B. Welding arc initiator.  United States.

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                    Correy, T B. Tue .  
        "Welding arc initiator".  United States.

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@article{osti_7073303,

  title        = {Welding arc initiator},

  author       = {Correy, T B},

  abstractNote = {An improved inert gas shielded tungsten arc welder is disclosed of the type wherein a tungsten electrode is shielded within a flowing inert gas, and, an arc, following ignition, burns between the energized tungsten electrode and a workpiece. The improvement comprises in combination with the tungsten electrode, a starting laser focused upon the tungsten electrode which to ignite the electrode heats a spot on the energized electrode sufficient for formation of a thermionic arc. Interference problems associated with high frequency starters are thus overcome. 3 figs.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1989},

  month        = {5}

}

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