EP1248500A3 - Welding torch - Google Patents

Welding torch Download PDF

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Publication number
EP1248500A3
EP1248500A3 EP02014132A EP02014132A EP1248500A3 EP 1248500 A3 EP1248500 A3 EP 1248500A3 EP 02014132 A EP02014132 A EP 02014132A EP 02014132 A EP02014132 A EP 02014132A EP 1248500 A3 EP1248500 A3 EP 1248500A3
Authority
EP
European Patent Office
Prior art keywords
end wall
welding torch
nozzle
plasma
nozzle element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02014132A
Other languages
German (de)
French (fr)
Other versions
EP1248500A2 (en
Inventor
Luo Lifeng
William T. Matthews
David W. Perrin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lincoln Electric Co
Original Assignee
Lincoln Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lincoln Electric Co filed Critical Lincoln Electric Co
Priority to EP02014132A priority Critical patent/EP1248500A3/en
Publication of EP1248500A2 publication Critical patent/EP1248500A2/en
Publication of EP1248500A3 publication Critical patent/EP1248500A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3442—Cathodes with inserted tip
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3468—Vortex generators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3478—Geometrical details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3489—Means for contact starting

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Geometry (AREA)
  • Plasma Technology (AREA)
  • Arc Welding In General (AREA)

Abstract

Ein Plasmabrenner weist ein röhrenförmiges Düsenelement (34) mit einer Stirnwand (102) und einer in dem Düsenelement (34) angeordneten Elektrode (48) auf, die eine der Stirnwand (102) gegen überliegende Stirnfläche (52) aufweist. Die Stirnfläche (52) und die Stirnwand (102) begrenzen einen Plasmagasraum (150) in dessen einer Stirnwand (102) eine sich in Achsrichtung der Düse verlaufende Auslaßöffnung (104) angeordnet ist. Das Düsenelement ist an seiner Außenfläche in besonderer Weise ausgestaltet, um einen etwa konischen Schutzgasmantel beim Betrieb des Brenners um die Schweißbrennerspitze zu erzeugen und somit zusammen mit dem Düsenmontagemittel für eine verbesserte Anordnung zum Kühlen der Schweißbrennerspitze und zum Erzeugen eines Schutzgasmantels um den Plasmastrahl herum zu sorgen.

Figure 00000001
A plasma torch has a tubular nozzle element (34) with an end wall (102) and an electrode (48) arranged in the nozzle element (34), which has an end surface (52) opposite the end wall (102). The end face (52) and the end wall (102) delimit a plasma gas space (150), in one end wall (102) of which an outlet opening (104) extending in the axial direction of the nozzle is arranged. The nozzle element is designed on its outer surface in a special way in order to generate an approximately conical protective gas jacket when the torch is operating around the welding torch tip and thus, together with the nozzle mounting means, to provide an improved arrangement for cooling the welding torch tip and for producing a protective gas jacket around the plasma jet ,
Figure 00000001
EP02014132A 1998-05-26 1998-05-26 Welding torch Withdrawn EP1248500A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02014132A EP1248500A3 (en) 1998-05-26 1998-05-26 Welding torch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98109489A EP0961527A1 (en) 1998-05-26 1998-05-26 Welding torch
EP02014132A EP1248500A3 (en) 1998-05-26 1998-05-26 Welding torch

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP98109489A Division EP0961527A1 (en) 1998-05-26 1998-05-26 Welding torch
EP98109489.9 Division 1998-05-26

Publications (2)

Publication Number Publication Date
EP1248500A2 EP1248500A2 (en) 2002-10-09
EP1248500A3 true EP1248500A3 (en) 2004-04-21

Family

ID=8232000

Family Applications (2)

Application Number Title Priority Date Filing Date
EP98109489A Withdrawn EP0961527A1 (en) 1998-05-26 1998-05-26 Welding torch
EP02014132A Withdrawn EP1248500A3 (en) 1998-05-26 1998-05-26 Welding torch

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP98109489A Withdrawn EP0961527A1 (en) 1998-05-26 1998-05-26 Welding torch

Country Status (1)

Country Link
EP (2) EP0961527A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT411972B (en) * 2002-09-18 2004-08-26 Fronius Int Gmbh TORCH HEAD FOR WELDING TORCH AND GAS NOZZLE, CONTACT NOZZLE AND INSULATING SLEEVE FOR SUCH A TORCH HEAD
DE102009004968B4 (en) * 2009-01-14 2012-09-06 Reinhausen Plasma Gmbh Beam generator for generating a collimated plasma jet
DE102009015510B4 (en) * 2009-04-02 2012-09-27 Reinhausen Plasma Gmbh Method and beam generator for generating a collimated plasma jet
US8350181B2 (en) * 2009-08-24 2013-01-08 General Electric Company Gas distribution ring assembly for plasma spray system
WO2018119389A1 (en) * 2016-12-23 2018-06-28 Hypertherm, Inc. Swirl ring for a plasma arc torch
US20200312629A1 (en) * 2019-03-25 2020-10-01 Recarbon, Inc. Controlling exhaust gas pressure of a plasma reactor for plasma stability

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5208448A (en) * 1992-04-03 1993-05-04 Esab Welding Products, Inc. Plasma torch nozzle with improved cooling gas flow
US5451739A (en) * 1994-08-19 1995-09-19 Esab Group, Inc. Electrode for plasma arc torch having channels to extend service life
US5726415A (en) * 1996-04-16 1998-03-10 The Lincoln Electric Company Gas cooled plasma torch

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534388A (en) * 1968-03-13 1970-10-13 Hitachi Ltd Plasma jet cutting process
US3813510A (en) * 1972-02-04 1974-05-28 Thermal Dynamics Corp Electric arc torches

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5208448A (en) * 1992-04-03 1993-05-04 Esab Welding Products, Inc. Plasma torch nozzle with improved cooling gas flow
US5451739A (en) * 1994-08-19 1995-09-19 Esab Group, Inc. Electrode for plasma arc torch having channels to extend service life
US5726415A (en) * 1996-04-16 1998-03-10 The Lincoln Electric Company Gas cooled plasma torch

Also Published As

Publication number Publication date
EP1248500A2 (en) 2002-10-09
EP0961527A1 (en) 1999-12-01

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