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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. 3 figs.

Inventors:
Issue Date:
OSTI Identifier:
7073303
Patent Number(s):
4829153 A
Application Number:
PPN: US 7-068698
Assignee:
Battelle Memorial Inst., Columbus, OH (United States) PTO; EDB-94-116208
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

Citation Formats

Correy, T.B. Welding arc initiator. United States: N. p., 1989. Web.
Correy, T.B. Welding arc initiator. United States.
Correy, T.B. Tue . "Welding arc initiator". United States.
@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}
}