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Title: Welding arc initiator

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.

Inventors:
 [1]
  1. (Richland, WA)
Issue Date:
Research Org.:
BATTELLE MEMORIAL INSTITUTE
OSTI Identifier:
866957
Patent Number(s):
4829153
Assignee:
Battelle Memorial Institute (Columbus, OH) PNNL
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
welding; initiator; improved; inert; gas; shielded; tungsten; welder; disclosed; type; electrode; flowing; following; ignition; burns; energized; workpiece; improvement; comprises; combination; starting; laser; focused; ignite; heats; spot; sufficient; formation; thermionic; interference; associated; frequency; starters; overcome; laser focus; tungsten electrode; inert gas; improvement comprises; improved inert; flowing inert; /219/

Citation Formats

Correy, Thomas B. Welding arc initiator. United States: N. p., 1989. Web.
Correy, Thomas B. Welding arc initiator. United States.
Correy, Thomas B. Sun . "Welding arc initiator". United States. https://www.osti.gov/servlets/purl/866957.
@article{osti_866957,
title = {Welding arc initiator},
author = {Correy, Thomas 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

Patent:

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