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Title: Plasma arc torch with coaxial wire feed

Abstract

A plasma arc welding apparatus having a coaxial wire feed. The apparatus includes a plasma arc welding torch, a wire guide disposed coaxially inside of the plasma arc welding torch, and a hollow non-consumable electrode. The coaxial wire guide feeds non-electrified filler wire through the tip of the hollow non-consumable electrode during plasma arc welding. Non-electrified filler wires as small as 0.010 inches can be used. This invention allows precision control of the positioning and feeding of the filler wire during plasma arc welding. Since the non-electrified filler wire is fed coaxially through the center of the plasma arc torch's electrode and nozzle, the wire is automatically aimed at the optimum point in the weld zone. Therefore, there is no need for additional equipment to position and feed the filler wire from the side before or during welding.

Inventors:
 [1]
  1. (Albuquerque, NM)
Issue Date:
Research Org.:
SANDIA CORP
OSTI Identifier:
874325
Patent Number(s):
6365867
Assignee:
Sandia Corporation (Albuquerque, NM) SNL
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
plasma; torch; coaxial; wire; feed; welding; apparatus; guide; disposed; coaxially; inside; hollow; non-consumable; electrode; feeds; non-electrified; filler; tip; wires; 0010; inches; allows; precision; control; positioning; feeding; fed; center; torchs; nozzle; automatically; aimed; optimum; weld; zone; additional; equipment; position; welding torch; disposed coaxially; /219/

Citation Formats

Hooper, Frederick M. Plasma arc torch with coaxial wire feed. United States: N. p., 2002. Web.
Hooper, Frederick M. Plasma arc torch with coaxial wire feed. United States.
Hooper, Frederick M. Tue . "Plasma arc torch with coaxial wire feed". United States. https://www.osti.gov/servlets/purl/874325.
@article{osti_874325,
title = {Plasma arc torch with coaxial wire feed},
author = {Hooper, Frederick M},
abstractNote = {A plasma arc welding apparatus having a coaxial wire feed. The apparatus includes a plasma arc welding torch, a wire guide disposed coaxially inside of the plasma arc welding torch, and a hollow non-consumable electrode. The coaxial wire guide feeds non-electrified filler wire through the tip of the hollow non-consumable electrode during plasma arc welding. Non-electrified filler wires as small as 0.010 inches can be used. This invention allows precision control of the positioning and feeding of the filler wire during plasma arc welding. Since the non-electrified filler wire is fed coaxially through the center of the plasma arc torch's electrode and nozzle, the wire is automatically aimed at the optimum point in the weld zone. Therefore, there is no need for additional equipment to position and feed the filler wire from the side before or during welding.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

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