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GB967445A - Electric arc torch - Google Patents

Electric arc torch

Info

Publication number
GB967445A
GB967445A GB1066060A GB1066060A GB967445A GB 967445 A GB967445 A GB 967445A GB 1066060 A GB1066060 A GB 1066060A GB 1066060 A GB1066060 A GB 1066060A GB 967445 A GB967445 A GB 967445A
Authority
GB
United Kingdom
Prior art keywords
passage
nozzle
diameter
torch
argon
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.)
Expired
Application number
GB1066060A
Inventor
Leonard Mark Augustus Gourd
James Hubert Henderson
Walter Ernest Trowbridge
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.)
BOC Group Ltd
Original Assignee
British Oxigen Ltd
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 British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB1066060A priority Critical patent/GB967445A/en
Publication of GB967445A publication Critical patent/GB967445A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
    • B05B7/222—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using an arc
    • B05B7/226—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using an arc the material being originally a particulate material
    • 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
    • H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Arc Welding In General (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

An electric arc torch comprises a generally cylindrical electrically conductive nozzle 13, a member 10 of insulating and heat resisting material defining a generally cylindrical passage 11 coaxial with the nozzle, the internal diameter <PICT:0967445/C6-C7/1> of the nozzle being equal to or greater than that of the passage, a non-consumable rod electrode 12 extending through the passage 11 with the arcing tip approximately level with the junction of the passage 11 and the nozzle 13, the diameter of the passage 11 being from one and one-half to four times the diameter of the electrode 12, and means 18 for introducing into the nozzle 12, downstream of the passage 11, material to be sprayed from the torch. The length of the passage 11 is preferably from one-half to one and one-half times its diameter, and the length of the nozzle 13 is preferably from one and one-half to two and one-half times the diameter thereof. Argon or other monatomic inert shielding gas is fed into the member 10 which is attached to the body of a conventional welding torch. As shown, the nozzle 13 which may be slightly divergent or convergent is attached to the member 10 by a threaded collar 19 and is water cooled. Metal or other powder to be sprayed on to a workpiece may be entrained in a flow of argon through the pipe 18. The spraying of a hard surfacing chromium-cobalt-tungsten alloy powder on to aluminium sheet and steel, and aluminium or alumina powder on to steel are mentioned.
GB1066060A 1960-03-25 1960-03-25 Electric arc torch Expired GB967445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1066060A GB967445A (en) 1960-03-25 1960-03-25 Electric arc torch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1066060A GB967445A (en) 1960-03-25 1960-03-25 Electric arc torch

Publications (1)

Publication Number Publication Date
GB967445A true GB967445A (en) 1964-08-19

Family

ID=9971945

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1066060A Expired GB967445A (en) 1960-03-25 1960-03-25 Electric arc torch

Country Status (1)

Country Link
GB (1) GB967445A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5518178A (en) * 1994-03-02 1996-05-21 Sermatech International Inc. Thermal spray nozzle method for producing rough thermal spray coatings and coatings produced
WO1996029443A1 (en) * 1995-03-17 1996-09-26 Hoechst Aktiengesellschaft Thermal deposition method for depositing thin ceramic layers and an associated device
US5858469A (en) * 1995-11-30 1999-01-12 Sermatech International, Inc. Method and apparatus for applying coatings using a nozzle assembly having passageways of differing diameter
WO2004028222A1 (en) * 2002-09-18 2004-04-01 Volvo Aero Corporation A thermal spraying device
US7557324B2 (en) 2002-09-18 2009-07-07 Volvo Aero Corporation Backstream-preventing thermal spraying device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5518178A (en) * 1994-03-02 1996-05-21 Sermatech International Inc. Thermal spray nozzle method for producing rough thermal spray coatings and coatings produced
WO1996029443A1 (en) * 1995-03-17 1996-09-26 Hoechst Aktiengesellschaft Thermal deposition method for depositing thin ceramic layers and an associated device
US5858469A (en) * 1995-11-30 1999-01-12 Sermatech International, Inc. Method and apparatus for applying coatings using a nozzle assembly having passageways of differing diameter
WO2004028222A1 (en) * 2002-09-18 2004-04-01 Volvo Aero Corporation A thermal spraying device
US7557324B2 (en) 2002-09-18 2009-07-07 Volvo Aero Corporation Backstream-preventing thermal spraying device

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